Privacy Policy

This Privacy Policy explains what information Backtalk: Voice Reverser ("the app", "we", "us") collects, why, who receives it, and the choices you have. It describes the app's actual technical behaviour. The app has no user accounts: we never ask for your name, email address, phone number or contacts, and you can use every feature without signing in.

1. Information collected automatically

The app shows ads and uses Google Firebase to understand usage and fix crashes. These services, built into the app as software development kits (SDKs), collect the following data automatically:

• Approximate location (derived from your IP address, never GPS): used for analytics, fraud prevention, security and compliance, and advertising. Collected by Google AdMob and AppLovin, which also share it with their advertising partners as described in their policies, and by Firebase Analytics.
• Device or other IDs (such as the Android advertising ID, app set ID and Firebase installation ID): used for analytics, fraud prevention, security and compliance, and advertising. Collected by Google AdMob and AppLovin (both also share it), Firebase Analytics and Firebase Crashlytics.
• App interactions (app opens, screens viewed, sessions, ad impressions and clicks): used for analytics, fraud prevention, security and compliance, and advertising. Collected by Google AdMob and AppLovin (both also share it), Firebase Analytics and Firebase Crashlytics.
• Diagnostics (device model, Android version, app version, performance and loading data): used for analytics, fraud prevention, security and compliance, and advertising. Collected by Google AdMob and AppLovin (both also share it) and Firebase Crashlytics.
• Crash logs (technical details of a crash, such as the stack trace and app state): used for analytics, so we can find and fix bugs. Collected by Firebase Crashlytics.
• Purchase history (that the VIP screen was opened, which plan was chosen, and whether a purchase started, succeeded or failed, with its price and currency; never your payment details): used for analytics. Collected by Firebase Analytics.

If you use Report a Problem on a character voice, only the character's ID in the app and the reason you picked are sent through Firebase Analytics; no audio and no text you typed is sent. We do not sell this information and we do not use it to identify you personally. Data is encrypted in transit: the app only connects over HTTPS.

2. Information that stays on your device

Most of what you do in the app never leaves your phone:

• Your voice recordings. Recording, reversing, changing speed and pitch, voice effects and mimic scoring all happen on your phone. Recordings are saved in the app's private storage and listed in the Recordings tab. They are never uploaded to us or to any of the services in section 1.
• Files you save or share. Save to Music copies a recording to the Music/Backtalk folder of your phone (videos to Movies/Backtalk); on Android 9 and earlier you pick the save location yourself. Share opens the standard Android share sheet and sends the file only to the app you pick.
• Audio files and videos you open. Audio files you pick with the Android file picker, videos you pick with the Android photo picker, and clips you record with your phone's own camera app for Reverse Video are processed on your phone. The app does not read any other files, photos or videos.
• Typed text and character voices. Text you type to reverse, and character voices, are spoken by the text-to-speech engine installed on your phone. That engine is a separate app provided by your phone maker or Google and works under its own privacy policy.
• Settings and progress. Day streak, challenge scores, puzzle progress, favorites, party mode scores, language and other preferences are stored locally in the app's private storage.

Uninstalling the app or clearing its data in Android settings deletes this information (files you saved to Music or Movies stay there until you delete them). Android's own backup service may include app data in your Google account backup if you have backup turned on.

3. Features that use the internet

• Ads, analytics and crash reports, as described in sections 1 and 5.
• Purchases, through Google Play (section 6).
• App configuration. The app periodically downloads a small settings file from our website (sensitech.web.app) that controls how ads are shown. No personal data is sent with this request.

Recording, reversing, effects, scoring, puzzles, phrases and backwards clips work without sending your content anywhere.

4. Permissions and why the app asks for them

• Microphone (RECORD_AUDIO): requested only the first time you tap Record, so the app can record your voice and play it backward. The app records only while you are recording, and the audio stays on your phone. If you decline, the rest of the app still works.
• Internet and network state: to load ads, send analytics and crash reports, check purchases, and check whether a connection is available.
• Billing (com.android.vending.BILLING): to sell the optional VIP subscription through Google Play.
• Advertising ID (AD_ID) and related permissions added by the ad SDKs: to let AdMob and AppLovin show and measure ads, as described in section 5.

The app does not request location, camera, contacts, storage access to your other files, or access to your accounts. Reverse Video records clips with your phone's own camera app, so the app itself never uses the camera.

5. Advertising partners and your choices

The app is free and supported by ads from Google AdMob, with AppLovin showing an ad when AdMob has none. Ads may be personalised using the data in section 1 where the law and your choices allow it. Ads are never shown to VIP subscribers. Rewarded ads play only when you tap a button that says so yourself ("Remove ads for 2 hours", or keeping your day streak after missing one day).

• Google AdMob collects and shares data as described in Google's Privacy Policy and How Google uses information from sites or apps that use its services.
• AppLovin is a third party that collects data from the app (approximate location, device or other IDs, app interactions and diagnostics) to serve and measure ads and prevent fraud, and shares it with its advertising partners. For more information about AppLovin's collection and use of your information visit: https://legal.applovin.com/privacy/.
• Google Firebase (Analytics and Crashlytics): Privacy and Security in Firebase.

Consent. In regions where consent is required (such as the European Economic Area, the United Kingdom and Switzerland), the app shows Google's consent form (User Messaging Platform) before ads are requested. You can change your choice at any time in the app: Settings → Privacy options. This row appears only in regions where the form applies.

Advertising ID. You can reset or delete your advertising ID in Android settings (Settings → Privacy → Ads, or Settings → Google → Ads on some phones). After that, apps can no longer use the old ID for personalised ads.

US state privacy laws. Sharing data with ad partners for personalised advertising may be considered "sharing" or "targeted advertising" under laws such as the California CCPA/CPRA. We do not sell personal information for money. To opt out, delete your advertising ID as described above, or contact us at the email below.

6. Purchases

The optional VIP subscription only removes ads; every feature and all content are free for everyone. Purchases are processed entirely by Google Play. The app never receives or stores your card number or other payment details; it only receives confirmation from Google Play that the subscription is active.

7. Children

The app is intended for a general audience of adults and is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided information through the app, contact us and we will help delete it.

8. Retention and deletion

Data on your device is kept until you delete it in the app, clear the app's data, or uninstall the app. Data collected by Google AdMob, AppLovin and Firebase is kept by those providers according to their own retention policies linked above. Because the app has no accounts, we cannot link this data to you by name; to request deletion, email us and we will explain how to reset the identifiers involved and forward the request where we can.

9. Your rights

Depending on where you live, you may have the right to access, correct, delete or object to the processing of your personal data, to withdraw consent, and to complain to your data protection authority. You can withdraw ad consent in Settings → Privacy options, reset your advertising ID, or contact us to exercise these rights.

10. Security

All network connections from the app use HTTPS, and your recordings and settings are kept in the app's private storage, which other apps cannot read. No method of transmission or storage is completely secure, but we use reasonable measures to protect the information described here.

11. Changes to this policy

If the app's data practices change, we will update this page and its effective date. Significant changes will also be reflected in the app's Data safety section on Google Play.

12. Contact

Questions or requests about this policy: Sensi Tech, CC Đồng Phát, Hà Nội 11700, Vietnam. Email: hanhnt3009.ffh4x.publish@gmail.com