Last updated: 4 June 2026
By downloading, installing, or using the Ava Habit Tracker app (package com.mk.ava, the “app”), you agree to these Terms and Conditions. Please read them carefully. If you do not agree, do not use the app. These terms are between you and Maximilian Keppeler (“I”, “me”), the provider of the app.
You must be at least 16 years old to use the app, or older if required by the laws of your country. If you are under the age of digital consent in your jurisdiction, you may use the app only with the involvement and consent of a parent or guardian. If you are under 18, you confirm that your parent or legal guardian has agreed to these Terms and consents to any Premium purchase made on your behalf. Paid subscriptions are concluded with Google Play; where the law requires it, a minor may purchase only with a guardian’s prior consent.
I grant you a personal, limited, non-exclusive, non-transferable, revocable license to use the app for your own personal, non-commercial purposes. You may not copy or modify the app, any part of the app, or my trademarks; you may not attempt to extract or reverse-engineer the source code; and you may not translate the app or create derivative versions. The app and all trademarks, copyright, database rights, and other intellectual property rights related to it belong to Maximilian Keppeler.
The app requires an account — you can sign in with Google or continue anonymously as a guest. You are responsible for keeping your device and your access to the app secure. I recommend that you do not jailbreak or root your device, as this removes security protections imposed by the operating system, could expose your device to malware, and may stop the app from working correctly.
You own the content you create in the app — your habits, entries, notes, photos, and other data. You grant me a limited license to store and process that content solely to operate and provide the service to you. The app also lets you import data (from Ava’s backup format or certain other apps) and export your data (as JSON or XLSX) at any time. You warrant that you have the right to import any data you bring into the app, especially if it relates to other people.
You agree not to misuse the app, including by attempting to disrupt or compromise its security, accessing it through unauthorized means, or using it for any unlawful purpose or in violation of these terms.
The app offers an optional Premium subscription. Free use is subject to certain limits (such as a maximum number of habits). The free version may in future display advertising, which a Premium subscription would remove. How advertising data is handled is described in the Privacy Policy. Subscriptions are sold and processed through Google Play and managed via RevenueCat; payment, billing, auto-renewal, and refunds are handled by Google Play under its terms. Subscriptions renew automatically until cancelled, which you can do at any time in your Google Play account.
If you are a consumer in the EU/EEA or the UK, you have a statutory 14-day right of withdrawal for digital purchases. By starting your subscription you expressly request that performance begin immediately and acknowledge that your right of withdrawal is lost once performance has begun. You can still cancel renewal at any time via Google Play.
See the Google Play Terms of Service and RevenueCat’s terms.
I am committed to keeping the app useful and efficient. For that reason I reserve the right to make changes to the app, or to charge for its services, at any time and for any reason. I will never charge you for the app or its services without making it clear to you exactly what you are paying for.
The app relies on third-party services that have their own terms and conditions, including:
The app is provided “as is” and “as available”, without warranties of any kind to the extent permitted by law. The app is not a medical or health service and does not provide medical advice; do not rely on it for medical decisions. Always consult a qualified professional for health matters.
To the extent permitted by law, I am not liable for indirect or consequential loss, or for loss of data arising from your use of the app. Nothing in these terms excludes or limits liability for intent, gross negligence, injury to life, body, or health, or any liability that cannot be excluded under applicable law. If you are a consumer, your mandatory statutory rights are not affected.
You may stop using the app at any time and may delete your data or your entire account at any time — in the app under Settings or via the data & account deletion page. Deletion via the in-app option takes effect immediately; requests made through the deletion page are completed within 30 days. I may suspend or terminate access if you materially breach these terms or use the app unlawfully. On termination, the license granted to you ends.
These terms are governed by the laws of the Federal Republic of Germany, excluding its conflict-of-law rules and the UN Convention on Contracts for the International Sale of Goods. If you are a consumer, you also benefit from the mandatory consumer-protection provisions of the country in which you reside, and may bring proceedings in your local courts.
I am not obliged, and am not willing, to participate in dispute-resolution proceedings before a consumer arbitration board (Verbraucherschlichtungsstelle) within the meaning of the German Consumer Dispute Resolution Act (§ 36 VSBG). Consumers in the EU can find information about national alternative dispute-resolution bodies via the European Commission’s consumer-redress information site.
If any provision of these terms is found invalid, the remaining provisions remain in effect. These terms constitute the entire agreement between you and me regarding the app. I may update these Terms. For material changes I will give you reasonable advance notice (in the app or by email where available), explain the change, and tell you when it takes effect and that you may reject it by stopping use and cancelling any subscription before then. Minor changes, or changes required by law, may take effect when posted, shown by the updated “Last updated” date.
Questions about these terms? Contact me at me@maxkeppeler.com.
These Terms and Conditions are effective as of 4 June 2026.