Terms and Conditions
General Terms and Conditions of the kAIboard app — Last updated: 26 March 2026 — Version 3.0
1. Scope
These Terms and Conditions (hereinafter “Terms”) govern the use of the Android app kAIboard (hereinafter “App”), distributed via the Google Play Store.
Provider:
Alessandro Faedda
c/o POSTFLEX PFX-846-235
Emsdettener Straße 10
48268 Greven
Email: support@kaiboard.eu
Website: kaiboard.eu
By downloading, installing, or using the App, the user (hereinafter “User”) agrees to these Terms. If the User does not agree to these Terms, use of the App is not permitted.
2. Service description
kAIboard is a multilingual keyboard app for Android with the following core features:
- Keyboard layouts for currently 14 languages (subject to expansion)
- Automatic language detection based on the User’s contacts (phone number prefix)
- Offline autocorrect using Hunspell dictionaries (local on the device)
- Offline word prediction using KenLM language models (downloaded on demand)
- Offline translation using ML Kit language packs (downloaded on demand, approx. 30 MB per language)
- AI-powered online translation (optional, via GPT-4o-mini through a Cloudflare Worker Relay)
The available features depend on the chosen subscription plan (see section 4). The Provider reserves the right to expand or modify the features at any time.
3. Contract formation
The usage contract is formed upon the download and installation of the App from the Google Play Store. The presentation of the App in the Google Play Store does not constitute a legally binding offer, but rather an invitation to make an offer (invitatio ad offerendum).
Use of the App requires no registration and no user account.
4. Prices and payment terms
4.1 One-time purchase
The one-time purchase price for the App is € 2.39 (VAT included). This grants access to the basic features of the App.
4.2 Subscriptions (monthly)
For advanced features, three subscription tiers are available:
- PLUS: € 3.49 / month
- PRO: € 5.99 / month
- MAX: € 9.49 / month
All prices include applicable VAT. Payments are processed exclusively through Google Play Billing. The Provider does not collect payments directly from the User.
5. Subscriptions and cancellation
5.1 Duration and renewal
Subscriptions run for one month and renew automatically for an additional month unless cancelled in time.
5.2 Cancellation
Cancellation of a subscription is carried out exclusively through the Google Play Store. Cancellation must be completed at least 24 hours before the end of the current billing period. After cancellation, access to subscription features remains active until the end of the already paid period.
5.3 Grace period
In the event of payment issues, Google Play grants a grace period. During this period, the User retains access to subscription features until the payment issue is resolved or the grace period expires.
6. Right of withdrawal
For the purchase of digital content (one-time purchase and subscriptions), the withdrawal provisions under EU Directive 2011/83/EU apply. The right of withdrawal is excluded for the supply of digital content not supplied on a tangible medium, where performance has begun with the User’s express consent and acknowledgement that the right of withdrawal is thereby lost.
When downloading via Google Play, consent to the immediate commencement of digital content delivery is obtained as part of the purchase process. In addition, the Google Play refund policy applies.
7. Usage rights and licences
With the purchase of the App, the User is granted a simple, non-transferable, non-sublicensable right of use to use the App on their own Android devices for personal, non-commercial purposes.
The User is prohibited in particular from:
- Decompiling, disassembling, or otherwise attempting to derive the source code of the App (reverse engineering), except where permitted by mandatory law
- Reproducing, distributing, or making the App or parts thereof publicly available
- Using the App for unlawful purposes
7.1 Open-source libraries
The App uses the following open-source libraries under their respective licences:
- Hunspell — MPL 1.1 / LGPL 2.1 (autocorrect dictionaries)
- KenLM — LGPL 2.1 (language models for word prediction)
- FrequencyWords — MIT Licence (word frequency lists)
A complete list of all libraries used and their licences is available within the App under Settings → Open Source Licenses.
8. Data protection
Protecting the User’s data is a top priority for the Provider. The full privacy policy for the App is available as a separate document:
In summary:
- The text typed by the User is never transmitted to the Provider’s servers
- AI-powered online translation sends only the text explicitly selected by the User for translation to the translation service (GPT-4o-mini via Cloudflare Worker Relay)
- Autocorrect, word prediction, and offline translation operate entirely on the device
- Crash reports (Firebase Crashlytics) are sent only with the User’s explicit consent (GDPR opt-in)
9. Availability and updates
The Provider endeavours to make the App available without interruption. However, 100% availability cannot be guaranteed. In particular, limitations may occur with the following features:
- AI-powered online translation (dependent on the availability of external services)
- Downloading language models and offline translation packs (dependent on internet connectivity)
The Provider may release updates for the App to fix bugs, improve security, or introduce new features. To ensure full functionality, the User is recommended to always use the latest version of the App.
The Provider reserves the right to discontinue individual features of the App if this is necessary for technical, economic, or legal reasons.
10. Limitation of liability
The Provider is liable without limitation for intentional misconduct and gross negligence. In cases of slight negligence, the Provider is liable only for the breach of essential contractual obligations (cardinal obligations), limited to the foreseeable, contract-typical damage.
The Provider assumes no liability in particular for:
- Errors in autocorrect, word prediction, or translation (both offline and AI-powered)
- Data loss on the User’s device
- Damages arising from the use of incorrect translations
- Interruptions or unavailability of external services (e.g. translation service, Google Play Billing)
This limitation of liability does not apply to damages resulting from injury to life, body, or health, nor to claims under product liability law.
11. Intellectual property
All rights to the App, including the source code, design, graphics, texts, and the “kAIboard” trademark, belong exclusively to Alessandro Faedda, unless otherwise stated.
The open-source libraries used in the App (see section 7.1) are subject to their respective open-source licences and are excluded from this clause.
12. Changes to these Terms
The Provider reserves the right to amend or supplement these Terms at any time with effect for the future. The User will be notified of material changes in an appropriate manner (e.g. via a notice in the App or on the website).
Continued use of the App after the amended Terms take effect constitutes acceptance of the changes. If the User does not agree to the amended Terms, they are entitled to discontinue use of the App and cancel any existing subscription.
13. Final provisions
The laws of the Federal Republic of Germany shall apply, excluding the United Nations Convention on Contracts for the International Sale of Goods (CISG). Mandatory consumer protection provisions of the state in which the User has their habitual residence shall remain unaffected.
If the User is a merchant, a legal entity under public law, or a special fund under public law, the exclusive place of jurisdiction for all disputes arising from this contract is Hamburg.
Should any provision of these Terms be or become invalid or unenforceable, the validity of the remaining provisions shall not be affected (severability clause). The invalid provision shall be replaced by a valid provision that most closely reflects the economic purpose of the invalid provision.
14. Contact
For questions, GDPR requests or reports:
Email: support@kaiboard.eu
Website: kaiboard.eu
Response time: Within 30 days (Art. 12 GDPR)