Privacy Policy — Datu Studio

1. Scope

This Privacy Policy applies to all mobile applications published by Datu Studio (“we”, “us”) on Google Play, including:

AR Draw: Sketch and Trace (com.datu.ardrawing.sketch)
Draw Animation: Color Book (com.datu.drawanimation.flipanimation)
Word Finder: Puzzle Quest (com.datu.word.search.finder)
Text On Photo (com.datu.photoeditor.textonphoto)
Wallpaper 4K & Live Wallpaper (com.livewallpaper.wallpaper4k.sillywallpaper)
Don't Touch My Phone: Protect (com.datu.phoneprotector.donttouchmyphone)

By installing or using our apps you agree to this policy. If you do not agree, please uninstall the app.

2. Data we collect

We do not require an account and we do not ask for your name, phone number, address or contacts. Depending on the app, the following data may be collected automatically:

Device & app information: device model, Android version, language, country/region (from IP or locale), app version and screen size.
Identifiers: Android Advertising ID, Firebase installation ID and similar app-instance identifiers.
Usage & diagnostics: features used, session length, crash logs and performance data, used to fix bugs and improve the apps.
Purchase status: whether you have an active purchase or subscription (product ID, purchase token, order state) as provided by Google Play. We never receive your card or payment details.
Your content: photos, drawings, text and animations you create are processed and saved locally on your device. We do not upload them to our servers.

3. App permissions

Our apps only request permissions that a feature needs, and sensitive permissions are requested at the moment you use that feature. You can deny or revoke any permission in Settings › Apps › [App name] › Permissions; the related feature will simply stop working.

Camera

AR Draw: Sketch and Trace; Don’t Touch My Phone (flashlight alerts)

Shows the live camera view so you can trace an image onto paper, or controls the flashlight during an alarm. Camera frames are processed on your device and are never uploaded or stored by us.

Photos, media & files (Read media images / storage)

AR Draw, Draw Animation, Text On Photo, Wallpaper 4K

Lets you pick a picture to trace or edit and save your drawings, animations, edited photos or wallpapers to your gallery. We only access the files you choose.

Set wallpaper

Wallpaper 4K & Live Wallpaper

Applies the wallpaper or live wallpaper you selected to your home or lock screen.

Motion sensors, charging state & proximity

Don’t Touch My Phone

Detects when the phone is moved, picked up or unplugged so the alarm can sound. Sensor readings stay on your device.

Microphone (only if a feature needs it)

Don’t Touch My Phone (clap / whistle to find phone, where available)

Listens for a clap or whistle sound pattern on the device. Audio is analysed in real time and is never recorded, stored or sent anywhere.

Vibration, wake lock, foreground service

Don’t Touch My Phone, Wallpaper 4K

Keeps the alarm or live wallpaper running reliably and vibrates the device for alerts.

Notifications

All apps

Shows reminders, alarm status or download progress. You can turn notifications off at any time in Android settings.

Internet & network state

All apps

Loads content (templates, wallpapers, puzzles), shows ads, verifies purchases and sends anonymous crash reports.

Advertising ID (com.google.android.gms.permission.AD_ID)

Apps that show ads

Allows our ad partners to show relevant ads and measure performance. You can reset or delete it in Android Settings › Privacy › Ads.

Google Play Billing

Apps with premium features

Processes in-app purchases and subscriptions through Google Play.

4. Advertising

Our free apps are supported by ads served through Google AdMob and its mediation partners (such as Meta Audience Network, AppLovin, Unity Ads, InMobi, Liftoff/Vungle, Mintegral and others). These partners may collect your Advertising ID, IP address, device information and ad-interaction data to show ads, limit ad frequency, measure performance and prevent fraud.

Consent (EEA, UK, Switzerland): we use Google’s User Messaging Platform to ask for your consent before personalised ads are shown. You can change your choice at any time from the app’s Settings › Privacy options.
US state privacy laws: you can opt out of the “sale” or “sharing” of personal information for targeted ads via the in-app privacy options or by contacting us.
Opt out of personalised ads: Android Settings › Privacy › Ads › Delete advertising ID.
Remove ads: many of our apps offer a premium purchase or subscription that removes ads.

Our authorised ad sellers are published in our app-ads.txt file.

5. In-app purchases & subscriptions

All payments are handled by Google Play Billing. Google processes your payment information under its own privacy policy; we only receive confirmation of the purchase (product ID, purchase token, purchase time and status) so we can unlock premium features, verify that a subscription is active and let you restore purchases on a new device using the same Google account. See our Terms of Service for billing, renewal and refund details.

6. Third-party services

These services may process data on our behalf. Each has its own privacy policy:

7. How we use data

To provide app features and remember your settings.
To show ads and measure their performance.
To verify and restore purchases and subscriptions.
To diagnose crashes, fix bugs and improve our apps.
To respond to your support requests.
To prevent fraud and comply with legal obligations.

We do not sell your personal information for money.

8. Data retention & deletion

Content you create stays on your device until you delete it or uninstall the app. Analytics and crash data are kept by Firebase for up to 14 months. Support emails are kept for as long as needed to resolve your request. To request deletion of any data associated with your device, email datu.28198@gmail.com with the app name; we respond within 30 days. Uninstalling the app stops all further collection.

9. Your rights & choices

Depending on where you live (for example under GDPR, UK GDPR, CCPA / CPRA or Vietnam’s Decree 13/2023 on personal data protection), you may have the right to access, correct, delete or port your data, object to or restrict processing, and withdraw consent. Contact us to exercise these rights. You may also lodge a complaint with your local data protection authority.

10. Children’s privacy

Our apps are not directed at children under 13 (or the minimum age in your country). We do not knowingly collect personal information from children. If an app is suitable for younger audiences, ads are configured as child-directed and non-personalised. If you believe a child has provided us with personal data, contact us and we will delete it.

11. Security

Data is transmitted using encrypted connections (HTTPS) and handled by reputable providers. No method of storage or transmission is 100% secure, but we take reasonable measures to protect your information.

12. Changes to this policy

We may update this policy from time to time. The “Last updated” date above shows when it was last changed. Continued use of the apps after an update means you accept the revised policy.

13. Contact

Datu Studio — Vietnam
Email: datu.28198@gmail.com