Terms of Use

1. Scope

These terms of use govern the use of the app ByoKey (the “App”), which is provided by Maximilian Skibinski (Skibinski.dev - Maximilian Skibinski) (“we”, “us”). They apply once you have accepted them in the App; the App asks you to do so before you use it for the first time.

2. Licence agreement (EULA)

If you obtained the App from Apple’s App Store, the Licensed Application End User License Agreement (Standard EULA) provided by Apple applies to the licence to use the App. You conclude this licence agreement with us as the provider of the App, not with Apple. These terms of use supplement the licence agreement; in the event of a conflict, the licence agreement takes precedence with regard to the scope of the licence.

With regard to warranty and liability, the statutory provisions and the “Liability” section of these terms take precedence over the provisions of the Standard EULA (“No Warranty” and “Limitation of Liability”). Mandatory statutory rights, in particular as a consumer, remain unaffected in any case.

3. Right of use

We grant you a non-exclusive, non-transferable right to use the App on Apple devices that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions. You may not rent, lease, lend, sell, redistribute or sublicense the App, nor decompile, reverse engineer, disassemble or modify it, except where mandatory law permits this.

4. Acceptable use

You may only use the App in accordance with the applicable law and these terms. In particular, you must not:

• use the App to create, store or distribute unlawful content or content that infringes the rights of others;
• attempt to circumvent or impair the security mechanisms of the App or of connected services;
• use the App to request, generate or distribute content that violates the usage policies of the respective AI provider, or deliberately circumvent content filters or other safeguards of the App or of the provider;
• use the App in a way that impairs its operation or that of connected services or places an excessive burden on them.

5. AI features and AI-generated content

The App lets you have content – such as answers, text, code or images – generated by AI models of a third-party provider. This content is generated automatically, without a human reviewing it first; it is not a statement made by us. It may be wrong, incomplete, outdated or contradictory, contain made-up facts, quotes or sources, and be inappropriate, offensive or hurtful – even when it sounds convincing.

Please therefore check results yourself before you rely on them, pass them on, publish them or run them – especially facts, figures, references and source code. You decide whether and how you use results; when doing so, make sure that you do not infringe the rights of others and that you comply with any statutory labelling obligations for AI-generated content that apply to you. Our liability under the “Liability” section remains unaffected.

The App and the content it displays are not professional advice and do not replace it – in particular medical, psychological, legal, tax or financial advice. Do not make important decisions based solely on AI output, and consult a qualified professional if in doubt. In an emergency, call your local emergency number (112 in the EU).

We claim no rights to your input or to the results. Whether any rights exist in results, and who holds them, is determined by the law and by the provider’s terms.

6. Your own API keys

For the AI features, you use your own API key from a provider of your choice. You conclude the contract for the AI service directly with that provider; we are not a party to it, we do not act on the provider’s behalf, and we do not provide the AI service ourselves. Your contract with the provider is governed by its terms of use, usage policies and prices, and you must meet its requirements (for example a minimum age).

Keep your key secret, do not share it with others, and revoke it with the provider as soon as you suspect that an unauthorised person knows it. We have no access to your key, so we can neither view, recover nor block it. The App stores your API key so that it is only available on this device; it is not transferred to another device with a backup. Keep it safe yourself (for example in a password manager) or create a new one with the provider if needed.

The provider bills all charges for requests made with your key directly to you. Spending limits, credit balances, usage limits and rate limits depend on your account with the provider; once they are reached, the provider may reject requests. We recommend that you set a spending limit with the provider where it offers one. Where the App displays costs or usage (for example tokens), these figures are for guidance only; they are based on estimates or on information from the provider and may differ from the bill. Only the provider’s billing is authoritative. Our liability under the “Liability” section remains unaffected.

7. Availability and changes to the App

We continuously develop the App. We may change, extend or discontinue functions for a valid reason – for example technical developments, changes to the third-party services the App uses, security requirements or changes in the law – provided this is reasonable for you, taking our interests into account, and causes you no additional costs. There is no entitlement to uninterrupted availability. Your statutory rights – in particular with regard to updates for digital products and in the event of such changes – remain unaffected.

The AI features require an internet connection and the services of the respective provider. We have no influence on their availability, response times, available models, features or prices. Outages, maintenance, limits or changes on the provider’s side – for example if it discontinues a model or changes its interface – may cause functions of the App to be temporarily or permanently unavailable.

8. Backups and data loss

The App stores your content on your device (see the privacy policy); we do not have a copy of it. If you delete the App, reset your device, or your device is lost or damaged, content you have not backed up may be lost, and we cannot restore it. Please therefore back up important content regularly – for example with a device backup (iCloud Backup or a computer) or, where the App offers this, by exporting it. Our liability under the “Liability” section remains unaffected.

9. Liability

We are liable without limitation for intent and gross negligence, for injury to life, body or health, under the German Product Liability Act (Produkthaftungsgesetz), for defects we have fraudulently concealed and to the extent of any guarantee we have given.

In the event of slight negligence, we are only liable for the breach of an essential contractual obligation – an obligation whose fulfilment makes the proper performance of the contract possible in the first place and on whose fulfilment you may normally rely – and our liability is limited to the foreseeable damage typical for this type of contract. Otherwise, liability for slight negligence is excluded. Insofar as our liability is excluded or limited, this also applies to the personal liability of our legal representatives and vicarious agents.

Content generated by AI models and services of AI providers with which you have your own contract are not our own content or services. Our own liability – for example if the App transmits or displays content incorrectly – is governed by the preceding paragraphs.

If you are a consumer, the limitations of liability in this section only apply to the extent that the mandatory law of the country in which you have your habitual residence permits them; any further-reaching rights that this law grants you remain unaffected.

10. Changes to these terms

We may amend these terms of use with effect for the future if there is a valid reason, for example new functions or changes in the law. The App shows you a new version before it takes effect; it only applies to you once you have accepted it in the App. Until then, the previous version continues to apply.

11. Governing law and final provisions

These terms are governed by the law of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods (CISG). If you are a consumer, this choice of law does not deprive you of the protection afforded by the mandatory provisions of the law of the country in which you have your habitual residence. For the licence agreement (Standard EULA), the choice of law provided for in it remains unaffected.

We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.

Should individual provisions of these terms be or become invalid, the validity of the remaining provisions remains unaffected.

12. Contact

If you have any questions about these terms, you can reach us here:

Maximilian Skibinski
Skibinski.dev - Maximilian Skibinski
Wladimir-Komarow-Straße 41
15517 Fürstenwalde/Spree
Germany

E-mail: hello@skibinski.dev

Further information: Privacy Policy · Legal Notice

Last updated: 27 October 2026