Privacy Policy

Last updated: 1 October 2026

Mimic is a language-practice app operated by BrightByte Lab ("we", "us"). This policy explains what information Mimic handles, where it goes, and the choices you have. It applies to the Mimic app for Android.

Mimic has no accounts. We do not ask for your name, email address, phone number or contacts, and your practice history stays on your device.

Information we collect

Stored on your device only. Your library, playlists, saved words and notes, practice history and streaks, daily usage counts and settings (such as your native and learning languages) are stored locally on your phone. We do not receive them. They may be included in your device's Android backup if you have backup turned on.

Microphone. Shadowing and Practice words ask for microphone access so you can record yourself. Audio is captured only while you are recording and is passed to your device's speech recognition service (usually provided by Google), which may process it on the device or online to turn it into text. Mimic does not upload your recordings. A copy of your latest take is kept temporarily in the app's cache on your device so you can replay it, and is deleted when you move on or clear the app's data. Practice words may also read a word aloud using your device's text-to-speech engine.

Text you choose to look up or explain.

AI Explain sends the transcript line you selected, and the lines just before and after it, together with your learning and native languages, to our server (hosted on Supabase), which asks OpenAI to write the explanation. No account or name is attached, but our server sees your IP address and an app-integrity token (see App integrity below). We do not store the text; OpenAI processes it under its API terms, and states that it does not use data sent through its API to train its models.
Dictionary sends the word you tapped to a third-party dictionary service to fetch its definition. Some entries can also be opened on an external dictionary website; that site loads inside the app, may use cookies, and applies its own privacy policy.
Translation converts transcript lines into your native language. This usually happens on your device, and the first use of a language may download a language pack. Where on-device translation isn't used, the transcript text is sent to a third-party translation service.

Videos you open or import. Videos play in YouTube's embedded player. To show captions, Mimic requests the video's caption track, title and thumbnail from YouTube or from a third-party captions provider.

Collected automatically by the services we use.

Advertising (free version only, Google AdMob): your device's advertising ID, IP address and the approximate location derived from it, device and app information, and how you interact with ads.
Analytics (Google Firebase Analytics): which screens and features are used, app version, device model, OS version and country, linked to an app-instance identifier. We never log what you type, say or look up, or the content of transcripts.
Crash reports (Firebase Crashlytics): crash and error details, device state at the time, and an installation identifier.
App integrity (Firebase App Check with Google Play Integrity): a signal that the request comes from a genuine copy of Mimic installed from Google Play, used to protect AI Explain from abuse.
Purchases (Google Play Billing and RevenueCat): your purchase history, an anonymous app user ID, your IP address, basic device information and the Firebase app-instance identifier, used to confirm and restore your Mimic Pro subscription. Payment details are handled by Google Play; we never see them.
App configuration (Firebase Remote Config): the app periodically fetches settings from Google, which identifies your installation so the right settings are returned.

How we use information

To provide the app's features: playing videos, showing captions and translations, scoring your speech, explaining lines and looking up words.
To show ads in the free version and to measure their performance.
To unlock and restore Mimic Pro.
To understand which features are used, fix crashes and improve the app.
To protect our servers from abuse.

We do not sell your personal information.

Third-party services

Mimic relies on the services below. Each processes data under its own privacy policy:

YouTube (embedded player and captions) — by using Mimic you also agree to the YouTube Terms of Service, and YouTube's handling of your data is covered by the Google Privacy Policy.
Google AdMob, Google User Messaging Platform, Firebase (Analytics, Crashlytics, Remote Config, App Check), ML Kit and Google Play services — Google Privacy Policy; how Google uses data from apps: policies.google.com/technologies/partner-sites.
RevenueCat — revenuecat.com/privacy
Supabase — supabase.com/privacy
OpenAI — openai.com/policies/privacy-policy
Third-party dictionary, translation and captions providers, each under its own privacy policy.

Your choices

Ad consent. Where the law requires it (for example in the EEA and the UK), Mimic asks for your consent before showing personalised ads. You can change your choice at any time in Settings → Ad privacy options.
Advertising ID. You can reset or delete your advertising ID in your device's settings (Settings → Privacy → Ads, or Google → Ads).
Microphone. You can revoke microphone access in Android settings; everything except recording keeps working.
No ads. Mimic Pro removes ads.

Data retention and deletion

What Mimic stores stays on your device (or in your Android backup, if you have backup turned on) until you delete it in the app, clear the app's data or uninstall Mimic. Our AI Explain server does not store the text you send; it is passed to OpenAI to produce the explanation. Data held by the third-party services above is kept according to their own policies.

To delete your data: clear the app's storage or uninstall Mimic, reset your advertising ID in your device settings, and remove any Android backup in your Google account. Because Mimic has no accounts, we cannot look up data about you ourselves; for anything else, contact us below.

Security

Mimic's own requests are sent over encrypted connections (HTTPS).

Your rights

Depending on where you live (for example the EEA, the UK or California), you may have the right to access, correct or delete personal information held about you, to object to or restrict how it is used, and to complain to your local data protection authority. Contact us below and we will help, including by pointing you to the service that holds the data. Our providers may process data in countries other than your own, including the United States.

Children's privacy

Mimic is not directed at children under 13 (or the minimum age in your country), and we do not knowingly collect personal information from them. If you believe a child has used Mimic in a way that shared their information, contact us and we will help.

Changes to this policy

We may update this policy when Mimic changes. The date at the top shows the latest version, and significant changes will be announced in the app or on its Google Play page.

Contact

Questions about this policy: brightbytelab@gmail.com