Privacy Policy — ScanPaper

Last updated: 2026-11-09

ScanPaper ("the app") scans documents, reads their text, and lets you add a signature or stamp and export PDFs, images, or Word (.docx) files. This policy explains what the app handles, where it is stored, and when it leaves your device.

The developer runs no server and never receives or holds your documents, photos, recognized text, signatures, or stamps. Scanning, text recognition (OCR), photo stitching, and stamp background removal run entirely on your device; the app does not upload your documents. No account or sign-in is required.

1. Camera and images

• Document scanning uses Google's ML Kit Document Scanner. Capture, edge detection, and cropping happen on the device, and the captured images are saved on your device.
• Panorama scan: only this feature, which joins several overlapping photos into one page, uses the app's own camera screen and asks for the camera permission. The permission is optional; if you decline, document scanning and picking photos from the gallery still work. Photos are processed only on your device and are not sent to any server; the temporary photos are deleted after the joined result is added to your document.
• Stamp and signature photos come from your device's camera app or a photo you pick from the gallery. Only the photo you choose is read; the app does not access your other photos.
• A gallery image is imported only when you pick it, and is processed on the device.
• Importing PDFs and photos from files: the app reads only the PDFs and photos you pick in the file picker. Each PDF page is converted to an image on your device and then recognized; files are not sent to any server. The app does not access any other files. Password-protected PDFs are not opened. While importing, a temporary copy may be created in the app's temporary cache and is deleted when the work finishes.
• Text recognition (OCR) runs with a model bundled in the app, on the device. Images and text are not sent to a server for recognition.

2. Data stored on your device

The following stays on your device and is removed when you uninstall the app.

• Scanned document images, document names, recognized text, and text positions — you can delete each document in the app at any time
• Signatures and stamp images you create, and where you placed them on documents — you can delete them in the app
• App settings such as the expiry time of an ad-free pass and whether ads were removed

The app's documents, signatures, stamps, and settings are not included in Google account auto backup or device-to-device transfer.

When you export or share a PDF, image, or Word (.docx) file, the file is created in the app's temporary cache and passed only to the app or location you choose. On Android 10 and later, tapping "Save" stores the PDF in the Documents/ScanPaper folder on your device; that file may remain after you uninstall the app, and you can delete it yourself. What happens afterward is governed by that app's policies.

3. Advertising

The app shows banner, app-open, interstitial, and rewarded ads through Google AdMob. Google may collect advertising identifiers, device information, and IP address to serve ads and prevent abuse, governed by Google's Privacy Policy. The ad SDK does not access your document images or recognized text.

• To opt out of ad personalization: device Settings → Google → Ads

If you use the app in the European Economic Area, the United Kingdom, or Switzerland, an ad consent form provided by Google's User Messaging Platform (UMP) is shown on first launch, and no ads are requested before you respond. You can change your choice at any time via "Privacy settings (ads)" on the app's home screen.

Rewarded ads are shown only when you choose to watch one. Watching one to the end unlocks extra features (saving more signatures and stamps, joining more photos in a panorama) for 24 hours, during which other ads are not shown.

4. Ad removal purchase

Removing ads is a one-time in-app purchase (not a subscription) sold through Google Play. Google Play handles payment and refunds, and the developer does not receive or store your card or payment details. The app asks Google Play for your purchase history to check whether you own it, and stores only whether ads are removed on your device. After purchasing, ads are no longer shown, the limit on saved signatures and stamps is lifted, and the limit on panorama photos is raised.

5. Google Play services

The document scanner is a component delivered through Google Play services. It may download required models through Google Play and may collect usage and diagnostic data under Google's policies. Google performs this processing; the developer does not receive that information.

6. Children

The app is not directed to children under 14 and does not knowingly collect their data.

7. Changes

If this policy changes, the changes and the last-updated date will be posted on this page.

8. Contact

• Developer: SongTaeHwan
• Email: songtaehwan@gmail.com