You never create an account. We do not ask for your name, email, phone number, photos, contacts, location or microphone.
Every engine sound is generated live on your phone. Nothing you do in the cockpit is uploaded. Rev clips you record stay on your phone until you choose to share them.
Your progress is saved on your phone. Cloud save is optional.
We use Google services for ads, purchases and anonymous usage analytics. They are described below.
| App name | Engine Rev - Sound Simulator |
|---|---|
| Package name | com.rajapps.enginerev |
| Platform | Android (Google Play) |
| Developer | Raj Chourasiya, India |
| Contact | rajbhaiweb@gmail.com |
| Store listing | play.google.com/…?id=com.rajapps.enginerev |
| Effective date | 21 October 2026 |
01Who we are
Engine Rev - Sound Simulator ("the App") is an engine sound simulator published by Raj Chourasiya ("we", "us"), an independent developer based in India.
If you have any question about this policy or your data, write to rajbhaiweb@gmail.com.
02Data stored on your device
The App saves your game progress on your phone: miles, unlocked engines, parts and scenes, settings, best drag times, daily tasks, achievements and your invite code.
This data stays on your device. It is deleted when you uninstall the App or clear its data in Android settings.
03Rev clips (videos you record)
When you tap REC in the cockpit, the App records only the engine settings of your drive (rpm, throttle, gear, speed) plus one still picture of the windshield. It then renders a short MP4 video on your phone with the Engine Rev watermark.
- No microphone and no screen recording are used. The video is saved in the App's private cache, and in Movies/Engine Rev only if you tap Save to gallery.
- A clip leaves your phone only when you share it yourself through Android's share menu. The receiving app (for example WhatsApp or Instagram) then handles it under its own policy.
04Ghost race codes
If you share a ghost code, it contains your quarter-mile split times, the engine name, your trap speed and your 6-character invite code. It contains nothing else about you.
05Notifications
If you allow it, the App schedules a few local reminders on your phone (free crate ready, garage earnings, login streak). They are created on the device itself; no push server is used and no data is sent anywhere.
You can turn them off in Settings → Garage reminders or in Android notification settings.
06Google Play Games (leaderboards)
If online leaderboards are enabled and you sign in with Google Play Games, your Play Games profile name and avatar, and the scores you submit (best 0-100 time, quarter-mile time, top speed), are shared with Google Play Games and shown to other players. This is handled by Google under its privacy policy.
07Optional cloud save
If cloud save is switched on, the App signs in with Firebase Anonymous Authentication. This creates a random ID that is not linked to your name or Google account.
Your progress is then stored in Google Cloud Firestore under an 8-character Sync Code shown in Settings. Anyone who has your Sync Code can restore that progress, so keep it private.
08Usage analytics
We use Google Analytics for Firebase to learn which features people use, so we can fix problems and improve the App.
- What is collected: actions inside the App (for example which screen was opened, which engine was selected, a finished drag run, a completed purchase), the App version, device model, Android version, approximate country (worked out from the IP address), an app-instance ID, and the advertising ID where Android allows it.
- What is not collected: your name, email, phone number or precise location.
- You can switch analytics off at any time in Settings → Share usage analytics.
09Advertising
The App shows ads through Google AdMob. Google may collect the advertising ID, IP address, device information and how you interact with ads, in order to show ads, limit how often they appear, and measure them.
- Users in the EEA, UK and Switzerland see a consent form before personalised ads are shown. You can change that choice later in Settings → Ad privacy choices.
- You can reset or delete your advertising ID in Android settings → Google → Ads.
- Buying "Remove Ads" or the All-Access Pack switches off banner and interstitial ads. Rewarded ads, which you choose to watch, stay available.
10In-app purchases
Purchases are processed by Google Play. We never see or store your card or payment details.
We only receive the product ID and a purchase token from Google Play. The App uses them to unlock what you bought and to restore purchases.
11Device permissions
- Internet and network state: for ads, purchases, analytics and optional cloud save.
- Vibrate: for engine and gear-shift haptics.
- Notifications: only if you allow garage reminders.
- Billing: for Google Play purchases.
- Advertising ID: used by AdMob and Firebase as described above.
The App does not use your microphone, camera, location or contacts. It writes a video to your gallery only when you tap Save to gallery.
12Third-party services
The services below process data under their own privacy policies:
- Google AdMob — https://policies.google.com/technologies/ads
- Google Analytics for Firebase, Firebase Authentication and Cloud Firestore — https://firebase.google.com/support/privacy
- Google Play Billing and Google Play Games — https://policies.google.com/privacy
14Data retention and deletion
- Data on your device is kept until you uninstall the App or clear its data.
- Analytics data is kept for the limited period set in our Google Analytics settings, and never longer than 14 months.
- To delete a cloud save, email rajbhaiweb@gmail.com with your Sync Code. We delete it within 30 days.
15Children
The App is meant for a general audience aged 13 and over. It is not directed at children under 13, and we do not knowingly collect personal information from them.
If you believe a child under 13 has provided personal information through the App, contact rajbhaiweb@gmail.com and we will delete it.
16Security
Data sent to Google services travels over encrypted (HTTPS) connections. We take reasonable steps to protect information, but no method of storage or transmission is completely secure.
17Your rights
Depending on where you live (for example under the GDPR, the UK GDPR, India's Digital Personal Data Protection Act 2023, or the CCPA), you may have the right to access, correct or delete your data, and to withdraw consent.
Write to rajbhaiweb@gmail.com to use these rights. We do not hold your name or email, so we may ask for your Sync Code to find your data.
18Changes to this policy
We may update this policy when the App changes. The new version will appear in the App and on our website with a new effective date.
19Contact
Raj Chourasiya — rajbhaiweb@gmail.com