Terms of Use and End User License Agreement for STAKK

Last updated: 18 July 2026

These Terms of Use and End User License Agreement, referred to below as the “Terms”, govern your downloading, installation, access to and use of the STAKK Peptide Tracker mobile application for iOS, referred to below as “STAKK” or the “App”.

By downloading, installing, purchasing, accessing or using STAKK, you agree to these Terms. If you do not agree to these Terms, you must not download, install or use the App.

1. Provider

STAKK is provided by:

Trusted Brands UG (haftungsbeschränkt)
Mühlensiek 9
32584 Löhne
Germany

Email: service@tbrands.de
Website: tbrands.de

Registered with the Local Court of Bad Oeynhausen under HRB 18770.

VAT identification number pursuant to Section 27a of the German VAT Act: DE360303903.

Authorised managing director:

Parvenu Holding UG (haftungsbeschränkt), represented by its Managing Director Dennis Steinmann, Mühlensiek 9, 32584 Löhne, Germany, registered with the Local Court of Bad Oeynhausen under HRB 18733.

In these Terms, “we”, “us” and “our” refer to Trusted Brands UG (haftungsbeschränkt).

2. Nature and intended purpose of STAKK

STAKK is a personal record-keeping, organisational and entertainment application.

The App allows users to manually record, organise and view information entered by them, which may include peptide names, dates, schedules, quantities, inventory information, reminders, notes and progress entries.

STAKK is intended exclusively as a personal organisational and entertainment tool.

STAKK is not intended by us to be:

A medical device
A healthcare service
A telemedicine service
A clinical record system
A medication-management system
A diagnostic or therapeutic tool
A substitute for medical advice
A substitute for professional supervision
A substitute for instructions supplied with a prescribed or authorised medicinal product

The App does not monitor the user’s health and is not designed for use by hospitals, physicians, pharmacies, clinics, research institutions or other healthcare providers.

3. No medical advice or medical information

STAKK does not provide medical advice, medical information, diagnoses, treatment recommendations or personalised health recommendations.

Nothing displayed, stored, organised or generated through the App constitutes:

Medical advice
Pharmaceutical advice
A diagnosis
A treatment plan
A prescription
A recommendation to use a peptide or other substance
A recommendation concerning dosage, frequency or administration
A statement that a substance is safe, effective, lawful, approved or suitable
A statement regarding expected health, fitness, cosmetic or performance outcomes

The App does not establish a doctor-patient, pharmacist-patient, therapist-patient or other healthcare professional relationship.

You must consult an appropriately qualified physician, pharmacist or other healthcare professional before making any decision concerning your health, a medical condition, medication, supplementation, peptides or any other substance.

You must not start, stop, increase, decrease, combine or otherwise alter the use of any substance based on information recorded in, displayed by or inferred from STAKK.

Always follow the instructions of your healthcare professional and the official instructions supplied with any legally prescribed or authorised product.

4. No dosage calculation or verification

STAKK does not calculate, recommend, prescribe, verify or validate:

Dosages
Concentrations
Administration intervals
Injection volumes
Reconstitution quantities
Mixing instructions
Titration schedules
Cycling protocols
Product expiry dates
Storage conditions
Sterility
Product authenticity
Contraindications
Side effects
Allergies
Interactions with medicines or other substances
Suitability for a particular person
Suitability during pregnancy or breastfeeding
Suitability in connection with an illness or medical condition

Any values shown in the App are based on information manually entered or selected by the user. The appearance of a value, date, schedule or reminder in the App does not mean that the value is correct, safe, medically appropriate or legally permitted.

You are solely responsible for checking every entry against reliable instructions supplied by a qualified healthcare professional and, where applicable, the authorised product documentation.

5. No emergency use

STAKK is not an emergency service and must not be used in a medical emergency.

The App does not contact emergency services, physicians, poison-control centres, caregivers or other persons on your behalf.

Do not delay seeking professional assistance because of information entered into or displayed by STAKK.

In the event of a suspected overdose, severe reaction, unexpected symptoms, loss of consciousness, breathing difficulty or another medical emergency, immediately contact the emergency services or an appropriate medical professional in your location.

6. No endorsement or supply of peptides

We do not manufacture, prescribe, sell, distribute, supply, test, authenticate, approve or endorse peptides, medicines, supplements, chemicals or other substances.

The inclusion or manual entry of the name of a substance in STAKK does not constitute a recommendation or endorsement.

We make no representation that any substance:

Is approved by a regulatory authority
Is available legally
May lawfully be purchased, imported, possessed or used
Is safe or effective
Is genuine, sterile or correctly labelled
Is suitable for human use
Produces any particular result

Some substances described as peptides may be prescription-only, unapproved, restricted, prohibited or unlawful in certain jurisdictions or circumstances.

You are solely responsible for complying with all laws, regulations, medical requirements, sporting rules, anti-doping rules, import restrictions and prescription requirements applicable to you.

STAKK must not be used to facilitate the purchase, sale, distribution or unlawful use of controlled, restricted, counterfeit or unauthorised substances.

7. User responsibility and assumption of risk

Any decision to obtain, possess, prepare, mix, inject, ingest, administer, combine, discontinue or otherwise use a peptide or another substance is made independently by the user and outside the purpose and operation of STAKK.

You acknowledge that using any medicinal, experimental, unapproved or biologically active substance may involve significant and potentially unknown risks.

You remain solely responsible for:

Obtaining appropriate professional medical advice
Verifying the identity and legal status of a substance
Ensuring that a substance was obtained from a lawful and reliable source
Following professional instructions
Verifying all entries and calculations independently
Monitoring your own health
Seeking medical assistance when appropriate
Complying with applicable laws
Keeping the device and locally stored information secure
Maintaining any independent records or backups you consider necessary

You must not rely on STAKK as the sole record of a prescription, treatment schedule, medical history or medication plan.

8. Accuracy of user entries

STAKK primarily displays and organises information entered by the user.

We do not independently review, verify or correct user entries.

The App may not identify:

Typographical errors
Incorrect units
Duplicate entries
Incorrect dates
Unsafe values
Conflicting schedules
Incorrect substance names
Medically inappropriate combinations
Entries inconsistent with professional instructions

You are responsible for reviewing all information before relying on it for personal organisation.

9. Reminders and notifications

STAKK may allow users to create local reminders or notifications.

Reminders are convenience features only. They are not medical alarms and must not be used as the sole method of remembering a prescribed treatment, appointment, administration time or other health-related action.

Notifications may be delayed, suppressed or not delivered due to circumstances including:

Device settings
Disabled notification permissions
Focus or Do Not Disturb settings
Battery-saving functions
Operating-system restrictions
Device shutdown
Software errors
App deletion
Changes to the operating system
Insufficient storage
Incorrect user settings
Time-zone changes

We do not guarantee that a notification will be delivered, displayed or noticed at any particular time.

You are responsible for maintaining an independent and reliable reminder system where timing may affect health or safety.

10. Eligibility

You may use STAKK only if:

You are at least 18 years old
You have the legal capacity to enter into a binding contract
Your use is permitted under the laws applicable to you
You use the App for personal and non-commercial purposes

The App is not intended for children or minors.

STAKK is not licensed for professional, medical, clinical, pharmaceutical, research, emergency, institutional or commercial use.

11. Licence

Subject to your compliance with these Terms, we grant you a limited, personal, revocable, non-exclusive, non-transferable and non-sublicensable licence to install and use STAKK on Apple-branded devices that you own or control.

The licence is granted solely for personal and non-commercial use and is subject to the Apple Media Services Terms and applicable App Store usage rules.

STAKK is licensed, not sold.

Where permitted by Apple, the App may also be accessed through Family Sharing or similar Apple services.

12. Prohibited use

You must not:

Copy, reproduce, distribute, sell, rent, lease or sublicense the App
Modify, translate or create derivative works from the App
Reverse engineer, decompile or disassemble the App, except where mandatory law expressly permits this
Attempt to obtain the source code of the App
Circumvent subscriptions, paywalls, licensing systems or security features
Use automated systems to interfere with the App
Introduce malware, harmful code or disruptive content
Use the App to violate applicable law or third-party rights
Use the App to facilitate the unlawful sale or distribution of substances
Represent that STAKK provides medical approval or professional supervision
Use STAKK in a hospital, clinic, pharmacy or professional healthcare setting
Use the App in a manner that may cause harm to another person
Remove copyright, trademark or ownership notices
Use our name, branding or content to promote a substance or medical claim without written permission

Mandatory rights under applicable copyright or software law remain unaffected.

13. Local storage and deletion of data

Information entered into STAKK is generally stored locally on the user’s device.

We do not provide a company-operated cloud backup for peptide entries, schedules, notes or other locally stored App content unless expressly stated otherwise in the App.

Deleting the App, resetting the device, losing access to the device, installing certain updates or experiencing device failure may result in permanent loss of locally stored information.

We have no technical ability to recover information that was stored only on the user’s device.

You are responsible for maintaining any additional records or backups you consider necessary.

Apple may provide device backups or other services independently under Apple’s own terms. We do not control those services.

The processing of personal data in connection with STAKK is described in the STAKK Privacy Policy.

14. In-app purchases and subscriptions

14.1 Optional purchases

STAKK may offer optional in-app purchases, including auto-renewing subscriptions, free trials or non-consumable purchases.

The exact product, subscription period, price, currency and included features are displayed in the App before purchase.

Features available without payment and features requiring payment may change over time, subject to applicable law and existing contractual rights.

14.2 Payment processing

All purchases made through the iOS App are processed by Apple through the user’s Apple Account.

We do not directly process or store complete payment-card details.

Payment is charged to the Apple Account used to confirm the purchase.

14.3 Automatic renewal

An auto-renewing subscription renews automatically at the end of each subscription period unless it is cancelled through the user’s Apple subscription settings before renewal.

The renewal price and subscription period are displayed by Apple before purchase.

Cancellation stops future renewal but does not normally terminate access during a subscription period that has already been paid for.

Deleting STAKK does not automatically cancel a subscription.

14.4 Managing subscriptions

Users can manage or cancel subscriptions through:

iOS Settings → Apple Account → Subscriptions

The precise menu names may vary by iOS version or region.

14.5 Free trials

Where a free trial is offered, it may automatically convert into a paid subscription when the trial ends unless the user cancels it before the conversion date shown by Apple.

Any unused portion of a free trial may be forfeited when the user purchases a subscription, where permitted by Apple and applicable law.

14.6 Refunds

Refunds for App Store purchases are administered by Apple and are subject to Apple’s procedures and applicable consumer law.

We cannot directly credit an Apple Account or independently reverse a transaction processed by Apple.

Nothing in these Terms limits mandatory refund, withdrawal, conformity or consumer rights.

14.7 Price changes

Subscription prices may change.

Any price change affecting an existing subscription will be handled in accordance with Apple’s procedures and applicable law. Where required, the user will receive notice or be asked to consent to the new price.

14.8 Restoring purchases

Where supported, users may restore eligible purchases through the App using the Apple Account originally used to make the purchase.

15. Availability, updates and compatibility

We may release updates, corrections, changes or new versions of STAKK.

The App may require a supported Apple device, a particular iOS version, sufficient storage, notification permissions or other technical requirements.

We do not guarantee compatibility with every device, operating-system version, region or future Apple software release.

Some functions may be temporarily unavailable due to maintenance, technical faults, third-party services, security requirements or changes outside our reasonable control.

Where legally required, we will provide updates necessary to maintain the conformity of paid digital products for the applicable statutory period.

Users are responsible for installing updates within a reasonable time after being informed that an update is available. We are not responsible for problems caused solely by a user’s failure to install a properly supplied update, to the extent permitted by law.

16. Changes to or discontinuation of the App

We may modify, replace, restrict or discontinue free functions where reasonably necessary, including for technical, security, legal or commercial reasons.

For paid features, subscriptions or digital products, changes will be made only in accordance with the contract and applicable mandatory consumer law.

We will not remove mandatory consumer rights through a change to the App or these Terms.

Where a material change adversely affects a paid digital product, users retain any rights provided by applicable law.

17. Support

Support requests may be sent to service@tbrands.de.

We will make reasonable efforts to respond to legitimate support requests. We do not guarantee a particular response time unless separately agreed or required by law.

Support does not include medical, pharmaceutical, dosage, substance-safety or treatment advice.

Support personnel are not authorised to assess whether a peptide or other substance is suitable, safe, genuine, correctly prepared or legally available.

Do not send medical records, complete treatment histories or unnecessary health information to support.

18. Intellectual property

All rights in STAKK, including its software, source code, design, graphics, icons, text, databases, branding, trademarks and other content, are owned by us or our licensors.

These rights are protected by applicable copyright, trademark, software and intellectual-property laws.

Except for the limited licence expressly granted in these Terms, no rights are transferred to the user.

User ownership of information manually entered into the App remains unaffected.

19. Third-party services

STAKK may rely on services provided by third parties, including Apple and, where the user has given the required consent, Meta for advertising attribution.

Third-party services are governed by their own terms and privacy practices.

You must comply with applicable third-party terms when using STAKK.

We are not responsible for an independent third-party service, except where liability cannot lawfully be excluded.

Links to third-party services do not constitute an endorsement of their content, products or practices.

20. Disclaimer of warranties

To the maximum extent permitted by applicable law, STAKK is provided on an “as available” basis.

We do not warrant or represent that:

The App will always be available
The App will be uninterrupted or error-free
Every notification will be delivered
User entries are accurate
The App is suitable for a medical purpose
The App can prevent mistakes, adverse effects or health consequences
The App will identify unsafe values or combinations
The App is compatible with every device or operating-system version
Locally stored information can always be recovered
The App will meet every user’s personal expectations

We do not provide any warranty concerning the safety, legality, quality, authenticity, purity, effectiveness or suitability of peptides or other substances.

Mandatory statutory rights, including statutory rights relating to paid digital products and digital services, remain unaffected.

21. Limitation of liability

21.1 Unlimited liability

We remain liable without limitation:

For damage caused intentionally or through gross negligence
For injury to life, body or health caused intentionally or negligently
Under the German Product Liability Act
Where we have expressly assumed a guarantee
Where a defect was fraudulently concealed
In any other case where liability cannot lawfully be excluded or limited

21.2 Slight negligence

In cases of slight negligence, we are liable only for breach of a material contractual obligation.

A material contractual obligation is an obligation whose performance is necessary for proper performance of the contract and on whose performance the user may ordinarily rely.

In such cases, liability is limited to damage that was foreseeable and typical for this type of contract when the contract was concluded.

21.3 Medical decisions and substances

STAKK does not assume a contractual duty to:

Assess a user’s health
Check the safety of a substance
Determine a dosage
Supervise administration
Detect interactions or contraindications
Verify the legality or authenticity of a product
Monitor symptoms
Prevent medical errors
Replace professional advice

Subject to Section 21.1, we are not responsible for consequences arising from a user’s independent decision to obtain, possess, prepare, combine, administer, inject, ingest, continue or discontinue a peptide or another substance.

Subject to Section 21.1, we are not responsible for consequences caused by incorrect user entries, reliance on a reminder, failure to obtain professional advice or failure to follow professional instructions.

21.4 Notification failures

Subject to Sections 21.1 and 21.2, we are not liable for missed, delayed, suppressed or unnoticed notifications caused by device settings, operating-system behaviour, disabled permissions, device shutdown, network conditions or other circumstances outside our reasonable control.

21.5 Loss of local data

Subject to Sections 21.1 and 21.2, liability for loss of locally stored information is limited to the reasonable cost of restoring the information from a proper and current backup maintained by the user.

Where no backup exists, we are not responsible for reconstructing locally stored entries that were never available to us.

21.6 Third parties

We are not liable for acts, omissions, availability or systems of Apple, Meta or another independent third party, except where we are legally responsible for selecting, instructing or supervising that party or where liability cannot lawfully be excluded.

21.7 Employees and representatives

The limitations in this Section also apply for the benefit of our legal representatives, employees, agents and persons used to perform contractual obligations.

22. Indemnification for unlawful commercial use

Where you use STAKK for an unlawful commercial purpose or knowingly infringe our intellectual-property rights, you are responsible for losses and reasonable costs directly caused by that unlawful conduct, subject to applicable law.

This provision does not create a strict or unlimited indemnification obligation for consumers.

23. Suspension and termination

You may stop using STAKK and delete the App at any time.

Deleting the App does not automatically cancel an active subscription.

We may suspend or terminate access to the App where:

The user materially breaches these Terms
The user attempts to circumvent payment or security systems
Use creates a material security or legal risk
Continued provision is prohibited by law
The App or relevant service is discontinued

Where reasonable and legally required, we will provide notice and an opportunity to remedy the breach before termination.

Termination does not remove payment obligations already incurred and does not automatically create a refund right.

Mandatory statutory rights remain unaffected.

Provisions that by their nature should continue after termination, including intellectual-property, disclaimer, liability and governing-law provisions, remain effective.

24. Apple-specific terms

These Terms are concluded between you and Trusted Brands UG (haftungsbeschränkt), not with Apple Inc.

We, and not Apple, are responsible for STAKK and its content.

Apple has no obligation to provide maintenance or support services for STAKK.

If STAKK fails to conform to an applicable warranty, you may notify Apple. Where applicable, Apple may refund the purchase price paid for the App. To the maximum extent permitted by law, Apple has no other warranty obligation concerning STAKK.

We, and not Apple, are responsible for addressing claims relating to STAKK, including:

Product-liability claims
Claims that the App fails to comply with a legal or regulatory requirement
Consumer-protection claims
Privacy or data-protection claims
Claims concerning intellectual-property infringement

You represent that:

You are not located in a country subject to a United States government embargo or designated by the United States government as supporting terrorism
You are not included on a United States government list of prohibited or restricted parties

You must comply with all applicable third-party terms when using STAKK.

Apple and its subsidiaries are third-party beneficiaries of these Terms. Upon your acceptance of these Terms, Apple has the right to enforce the Apple-specific provisions against you as a third-party beneficiary.

Nothing in this Section limits rights that cannot be limited under applicable law.

25. Consumer rights

Nothing in these Terms excludes or limits mandatory rights available to consumers under German, European Union or other applicable consumer-protection law.

In particular, mandatory rights concerning digital products, contractual conformity, updates, remedies, withdrawal, refunds and unfair contractual terms remain unaffected.

Where these Terms conflict with a mandatory consumer-protection provision, the mandatory provision applies.

26. Changes to these Terms

We may amend these Terms prospectively where reasonably necessary due to:

Changes in applicable law
Changes in regulatory requirements
Security requirements
Changes to the App
New functions
Changes to Apple requirements
The correction of ambiguities or errors

Changes will not unreasonably alter the essential balance of an existing paid contract.

Where required by law, we will notify users in advance and obtain consent before a change takes effect.

The current version will be made available through the App, the App Store listing or our website.

27. Governing law

These Terms are governed by the laws of the Federal Republic of Germany, excluding the United Nations Convention on Contracts for the International Sale of Goods.

If you are a consumer habitually resident in another country, this choice of law does not deprive you of mandatory consumer-protection rights provided by the law of your country of habitual residence.

28. Jurisdiction

If you are a merchant, a legal entity under public law or a special fund under public law, the courts responsible for Löhne, Germany, have jurisdiction to the extent permitted by law.

The same applies where a user has no general place of jurisdiction in Germany or another European Union member state or moves their habitual residence outside the European Union after conclusion of the contract.

Mandatory statutory rules concerning consumer jurisdiction remain unaffected.

29. Consumer dispute resolution

We are neither obliged nor willing to participate in dispute-resolution proceedings before a consumer arbitration board, unless a mandatory legal obligation applies in a particular case.

30. Language

These Terms may be provided in different languages.

For users habitually resident in Germany, the German-language version will prevail in the event of an inconsistency, where legally permissible.

Mandatory interpretation rules and consumer rights remain unaffected.

31. Severability

If an individual provision of these Terms is invalid or unenforceable, the remaining provisions remain effective.

The relevant statutory provision applies in place of the invalid or unenforceable provision.

This does not apply where maintaining the contract would create an unreasonable hardship for either party.

32. Contact

Questions, complaints and claims concerning STAKK may be directed to:

Trusted Brands UG (haftungsbeschränkt)
Mühlensiek 9
32584 Löhne
Germany

Email: service@tbrands.de
Website: tbrands.de