Last Updated: 8 October 2026
Havyu AI is developed and operated by an individual developer based in the United Kingdom, who is the seller named on the Havyu AI listing in the Apple App Store and Google Play (“we”, “us”). Havyu AI is not operated by a company. We are the data controller for the personal data described in this policy and can be contacted at havyulabs@gmail.com.
This policy explains what information Havyu AI handles, where it goes, why, how long it is kept, and the choices you have. It covers workout and habit data, health-platform data, AI coaching, voice input, account data, subscriptions, and diagnostics.
Havyu AI does not track you across other companies’ apps or websites, and we do not use the App Tracking Transparency framework. We do not sell your data, and we do not use it for advertising or marketing profiling. Our diagnostic tools are configured to strip personally identifiable information by default.
Your workout sets, routines, session times, habit check-ins (such as protein, water, sleep quality, mood, steps, alcohol, caffeine, meals and body weight), habit goals and other training data are stored locally on your device in an SQLite database. We cannot see this data. It leaves your device only:
The app also keeps a short on-device record of the coach’s earlier observations (for example, the action it showed for a lift and the weight at the time) so it can follow up with you. It contains no AI-written text, is deleted automatically after 90 days, is included in Export Data, and is removed by Delete Account and by clearing your workout history.
Importing data. If you use Import Data in Settings to bring in a Havyu backup or a file exported from another app (for example Strong, Hevy or FitNotes), the file is read and processed entirely on your device. It is not uploaded to us. Imported records are stored in the same on-device database and can be undone from the Import Data screen.
We do not currently sync your workout or habit data to any server. If we add cloud backup in a future version, we will update this policy and ask for your explicit opt-in before any sync happens.
You can choose to connect Havyu AI to Apple Health (iOS) or Health Connect (Android) in Settings. This is optional, available on the free tier, and off until you turn it on. You choose which permissions to grant in your device’s own permission screen.
What we read: your step count and body weight. Nothing else. We do not read sleep, heart rate, nutrition or any other health data.
What we write: a record of each completed strength-training session (activity type, start time and duration), so your workouts appear in your health app. We only write a session when its real start time was recorded.
Where it goes: health data is stored on your device with the rest of your habit data. If you have given AI consent, your steps and body weight (whether you entered them or they came from your health app) may be included in the data sent to our AI provider for your coaching, as described in Section 7. This is explained again when you connect.
What we never do with it: health data is never used for advertising or marketing, never sold, never shared with data brokers, and never used to train AI models, by us or by our AI provider.
Health Connect: Havyu AI’s use of information received from Health Connect adheres to the Health Connect Permissions policy, including the Limited Use requirements.
Disconnecting: you can disconnect at any time in Settings, and you can revoke permissions in the Health app (iOS) or Health Connect settings (Android). Disconnecting stops all future reads and writes. Values already imported remain in your on-device history until you delete them, and workouts already written stay in your health app until you remove them there.
We use your microphone only when you choose to log sets by voice. Your speech is converted to text by your device’s built-in speech-recognition service (Apple or Google), which may process audio under that provider’s own privacy policy. We never receive, store or transmit raw audio.
The resulting text is then turned into structured sets and reps:
Havyu AI uses Google’s Gemini large language model to generate coaching insights. AI features require you to sign in (Section 8) so that we can protect the service from abuse.
Consent first. You are asked for explicit consent before any data is sent to our AI provider. The consent screen lists exactly what is sent. If we ever change what is sent, we will ask for your consent again before sending it. You can withdraw consent at any time in Settings → AI Privacy, after which coaching uses on-device analysis only.
What is sent, with your consent:
What is not sent: your name, email address or account details are never sent to the AI provider with your data.
How it is sent: requests travel through our own server (Section 8), which checks that you are signed in and enforces daily usage limits, then forwards the request to Google. Our server does not log or store the content of your requests or the AI’s replies.
Google’s role: we use Gemini under Google’s Paid Services terms. Under those terms Google acts as our data processor under the Google Cloud Data Processing Addendum. It does not use your prompts or responses to train or improve its models. Google may keep requests for a limited period solely to detect abuse and comply with law, as its terms allow.
AI replies are stored on your device so they don’t need to be generated again. They are cleared when the underlying data changes and are removed by Delete Account.
Logging workouts and habits works fully without an account. You need to sign in to use AI features and to carry your Pro subscription across devices. You can sign in with Sign in with Apple or Sign in with Google.
If you sign in:
You can sign out at any time in Settings. You can permanently delete your account in Settings → Delete Account, which deletes your account data held by us and the data stored on your device. You can also request deletion by emailing havyulabs@gmail.com from your registered email address. We complete deletion requests within 30 days.
Havyu AI has a Free tier and a Pro tier, with a free trial available on some plans. All payments are processed by the Apple App Store or Google Play. We never receive or store your payment details. Subscription status is managed by RevenueCat, which receives your purchase and subscription status from the store together with an app user identifier.
We use Sentry to receive crash reports, error reports and performance data so we can find and fix problems. These reports are linked only to a random identifier generated on your device, not to your name, email or account. We configure Sentry to strip personally identifiable information, and AI-generated text and your logged data are not included in these reports.
Under UK and EU data-protection law, we rely on:
| Provider | Purpose | Data shared | Location |
|---|---|---|---|
| Google (Gemini) | AI coaching | The data listed in Section 7, without your name or email (only with consent) | United States and other Google locations |
| Supabase | Sign-in; AI request routing and daily usage limits | Email, account identifier, daily AI request counts (only if you sign in) | European Union |
| RevenueCat | Subscription management | Account or app user identifier, purchase and subscription status | United States |
| Sentry | Crash and performance diagnostics | Anonymous diagnostic data linked to a random device identifier | United States |
| Apple / Google Play | App distribution and in-app payments | Handled under the store’s own privacy policy | — |
| Apple Health / Health Connect | Optional health data exchange you control | Completed workout sessions (written); steps and body weight (read) | On your device |
Google, Supabase, RevenueCat and Sentry act as our data processors under data-processing terms that require them to protect your data. Apple and Google Play are independent providers acting under their own policies.
Some of our providers process data outside the UK and European Economic Area, mainly in the United States. Where this happens, the transfer is protected by recognised safeguards, such as the UK Extension to the EU–US Data Privacy Framework where the provider is certified, or standard contractual clauses with the UK International Data Transfer Addendum. You can contact us for more information about these safeguards.
Depending on where you live (including under the UK GDPR, EU GDPR and California law), you have the right to:
We will not discriminate against you for exercising any of these rights. We respond to requests within one month.
You must be at least 16 years old to use Havyu AI. We do not knowingly collect data from anyone under 16. If you believe someone under 16 has given us data, contact havyulabs@gmail.com and we will delete it promptly.
Your on-device data is protected by your device’s own security. Data sent to our server and providers is encrypted in transit. The AI provider’s key is held on our server, never in the app. No system is perfectly secure, but we limit what leaves your device to reduce risk.
We may update this policy as Havyu AI changes. The “Last Updated” date above will show when it last changed, and material changes will be highlighted in the app. If a change affects data you have consented to share, such as what is sent to our AI provider, we will ask for your consent again before it applies.
For any question or request about your data, email havyulabs@gmail.com.