Privacy Policy

Last updated: April 28, 2026

This Privacy Policy describes how Maintra ("we", "our", or "the app") collects, uses, and protects your information when you use our mobile application.

1. Who we are

Maintra is operated by Kyrylo Rozbeiko. If you have any questions about this policy, contact us at rokops13@gmail.com.

2. Information we collect

Account information

Email address — used to create and authenticate your account.
Display name (optional) — shown within the app.
Authentication identifiers from Google if you sign in with your Google account (Google account email and unique ID only — we do not access contacts, calendar, files, or any other Google service).

Vehicle and service data

Data you voluntarily enter into the app about your vehicles and their maintenance:

Vehicle details (make, model, year, VIN, license plate, mileage, fuel type, transmission, purchase date and price).
Service records (date, mileage, category, description, parts and labor cost, service station name).
Fuel logs (date, liters, price, station name, fuel quality rating).
Maintenance plan items (intervals, due dates, priority, notes).
AI chat messages you send to the in-app AI assistant about your vehicle.
Free-text notes you provide to the AI (sounds, driving issues, outside work done).

Preferences and usage

Language, preferred currency, country.
Subscription tier (Free / Pro / VIP) and expiration date.
Monthly counters for AI generations used, AI chat messages used, and receipt parses used.
App theme and notification preferences (stored only on your device).

Data we do not collect

We do not collect your precise location.
We do not collect your contacts, calendar, files, or messages.
We do not upload or store photos you take with your camera. Receipt scanning (Pro/VIP feature) sends the image to our AI provider for text extraction and does not persist the image on our servers.
We do not use advertising identifiers and the app contains no ads.
We do not use behavior-tracking, attribution, or advertising SDKs. We do use a crash-reporting SDK (Sentry — see Section 5) which collects diagnostic data only when the app errors.

3. How we use your information

To provide the core features of the app: storing and displaying your service history and maintenance plans.
To generate personalized AI maintenance plans based on your vehicle details and service history.
To sync your data across your devices via our backend.
To enforce subscription limits (e.g. free tier vehicle limits, monthly AI generation caps).
To send you local maintenance reminders on your device (only if you enable notifications).

4. Where your data is stored

Your data is stored in two places:

On your device — in a local SQLite database. This allows the app to work offline.
On our backend — hosted by Supabase (PostgreSQL database). Supabase provides the authentication, database, and API infrastructure we use.

Data is transmitted over encrypted HTTPS connections and stored with row-level security so that one user cannot read another user's data.

5. Third-party services

We share the minimum data needed with the following third parties in order to provide the app's features:

Supabase Inc.

Database hosting, authentication, and API backend.

Receives: all of your account and vehicle data. See the Supabase Privacy Policy.

Anthropic PBC (Claude AI)

AI processing for maintenance plan generation, in-app chat, and receipt parsing.

Receives: your vehicle details (make, model, year, mileage, VIN, fuel type), service history summaries, and any free-text notes or chat messages you send. Anthropic processes these requests to generate responses and does not train on this data. See the Anthropic Privacy Policy.

Google LLC (Sign-in with Google, Google Play Billing)

Optional authentication and in-app purchases.

Receives: authentication request (only if you choose to sign in with Google) and in-app purchase transactions. See the Google Privacy Policy.

RevenueCat Inc.

Subscription management for Pro / VIP tiers.

Receives: an anonymous user identifier and your subscription transactions. See the RevenueCat Privacy Policy.

Functional Software, Inc. (Sentry)

Crash and error reporting.

Receives: stack traces, your account ID, app version, device model and OS version, and a short trail of in-app actions leading up to an error. Sentry only receives data when the app errors. We do not send Sentry your vehicle data, service records, or chat content. See the Sentry Privacy Policy.

6. Your rights

You have the right to:

Access — view all of your data directly inside the app.
Correct — edit or delete any record inside the app at any time.
Delete — permanently delete your entire account and all associated data. See How to delete your account.
Export — generate a PDF of your vehicle history from within the app.
Object / restrict / complain — if you are in the EU/UK, you may contact your local data protection authority.

7. Data retention

We retain your data for as long as your account is active. When you delete your account, all of your data (profile, vehicles, service records, fuel logs, maintenance plans, and chat history) is deleted immediately from our database. Encrypted backups may contain residual copies for up to 30 days before they are overwritten in the normal course of operation.

8. Children

Maintra is not directed at children under 13 and we do not knowingly collect personal information from children under 13. If you believe a child has created an account, please contact us and we will delete it.

9. International transfers

Our service providers (Supabase, Anthropic, Google, RevenueCat, Sentry) are based in the United States and may process your data there. By using the app you consent to this transfer. These providers are required to protect your data in accordance with applicable data protection laws.

10. Security

We take reasonable technical and organizational measures to protect your data, including HTTPS encryption in transit, database-level encryption at rest, row-level security policies, and the principle of least privilege for service access. No system is perfect, however, and we cannot guarantee absolute security.

11. Changes to this policy

We may update this policy from time to time. Material changes will be communicated through the app or via email. The "Last updated" date at the top reflects the latest version.

12. Contact

Questions, concerns, or requests related to your data? Email rokops13@gmail.com.