Kind PDF privacy policy
Last updated: October 21, 2026
Kind PDF ("the app", "we"), published by Rekto Digital, is a PDF reader, scanner and toolkit for Android. This policy explains what happens to your information when you use it. The short version: your files never leave your phone, there is no account, and the little data we do receive is anonymous and used only to keep the app working and improve it.
1. Your files and documents
- Every file operation (viewing, annotating, scanning, combining, splitting, compressing, converting, signing, filling forms, adding text, OCR, protecting, unlocking and translating) happens on your device. We never upload your files, their text, their names or their content to any server, including ours.
- Files you create are saved where you choose (by default the
Documents/Kind PDFandPictures/Kind PDFfolders on your phone). The app never deletes your files without asking you first. - Signatures you choose to save are stored as images inside the app's private storage on your phone only. They are excluded from cloud backup and device transfer, and you can delete them at any time in the Sign tool.
- Passwords you type to protect or unlock a PDF are used once on your device and are never stored or sent anywhere.
- The recent files list stores only file locations and names on your phone, never copies of the files. Removing a file from the list never deletes the file.
2. No account
You never need to create an account or sign in. We don't ask for your name, email address or phone number to use the app.
3. Information the app receives or shares
The app uses the following services. Each receives only what is described here.
Anonymous usage statistics and crash reports (Google Firebase)
- Firebase Analytics tells us which tools are used, how long they take, and whether they succeed or fail (for example "pdf_to_word completed, 3 pages, 2 seconds"), plus which screen a tool was opened from. No file names, document text or personal details are ever included. We don't collect your advertising ID or Android ID through Analytics, and Analytics data is not used for advertising or ad personalization.
- Firebase Crashlytics sends a crash report if the app crashes: the technical error, your device model and Android version, the app version, and the last few tool events (for example "opened Rotate"). Error messages in the app are written so they never contain file names.
- Firebase Remote Config downloads settings such as free-version limits. It does not receive personal information.
- Firebase uses a random installation identifier to tell installations apart. Google processes this data as described in Google's Privacy Policy and the Firebase privacy information.
No ads
- Kind PDF shows no ads and contains no advertising SDK. The app doesn't use your advertising ID and doesn't share any data with advertisers. (Versions before 1.0.13 showed ads from Google AdMob in the free version.)
Purchases (Google Play)
- Pro is sold through Google Play Billing, as a monthly or yearly subscription or a one-time purchase. Google Play handles the payment; we never see your payment details, name or email.
- The app asks Google Play which Pro purchases your Google account owns, so Pro works and can be restored on your devices. This check happens between the app and Google Play; we don't run a server that receives your purchases. You can manage or cancel a subscription in Google Play → Payments and subscriptions.
Share for Pro
- When the offer is available, you can unlock Pro for a few days by sharing a link to Kind PDF with friends. Android's own share sheet sends the link; the app only counts on your phone how many times you shared. It never sees who you shared with and never reads your contacts.
On-device machine learning (Google ML Kit)
- Scanning, OCR and translation run on your device. Images of your pages and their text are not sent to Google.
- Some features need a one-time download through Google Play services:
- Translation: each language model (about 30 MB) is downloaded from Google only after you agree, optionally on Wi-Fi only. After that, translation works offline and the translated text stays on your phone.
- OCR (text recognition) and the document scanner are downloaded once by Google Play services when you first use them.
- ML Kit may send Google basic, anonymous information about how these features perform (such as the feature used, how long it took and error codes) to maintain and improve them. See ML Kit's data disclosure.
In-app review (Google Play)
- After you have saved a few files, the app may ask Google Play to show its standard rating card. Google handles your rating; the app doesn't find out whether or how you rated.
4. Permissions
The app asks for no storage, contacts, location or microphone permission. You choose files through Android's own file picker, and the document scanner runs inside Google Play services without the app needing the camera permission. Other permissions added by the services above (internet access, network state and billing) do not show prompts.
5. Children
Kind PDF is not directed at children under 13 and we don't knowingly collect information from them.
6. Data retention and deletion
- Your files and saved signatures stay on your phone until you delete them. Uninstalling the app deletes the app's private data (including saved signatures and the recent-files list), but not the files you saved to your folders.
- Anonymous analytics data is deleted after 14 months (the retention period set in Google Analytics: 2 or 14 months); crash reports after 90 days.
- Because there are no accounts, we can't link data to you personally. If you have a request about your data, contact us at contact@rektodigital.com and we'll help as far as we can.
7. Security
Data sent by the services above is encrypted in transit (HTTPS). Files you protect with the app are encrypted with AES-256.
8. Changes
If this policy changes, we'll update it here and change the date at the top. Significant changes will also be mentioned in the app's release notes.
9. Contact
Questions about privacy: contact@rektodigital.com