Privacy Policy
last updated: 2026-11-01
Your documents are never sent to our servers. They only go somewhere you choose when you save, share or print.
Opening and converting to PDF both happen on device.
Documents
Documents you open are processed entirely on your device. We never upload them to our servers or read their contents. When you save, share or print, the file goes to the place or app you pick. PDF conversion runs in an on-device engine. The app only accesses files you pick and does not request broad storage permission.
What stays on your device
Converted pages are cached on device so files reopen quickly. The cache is trimmed oldest-first once it passes 300MB. Names and locations of recently opened documents are also stored on device only. All of it is removed when you uninstall the app.
Accounts
There are no accounts. We do not collect your name, email, or phone number. There is no sign-in or sign-up.
Advertising
This app is supported by ads. Google AdMob serves them, and in the process your advertising ID (AAID), IP address, device information, and ad-related app activity (such as how many ads you saw and whether you tapped one) are collected by and shared with Google. Your IP address can be used to estimate coarse location at the country level. Document contents and file names are never used for ads and are never transmitted. See policies.google.com/technologies/ads for details.
When ads appear
No ads are shown while you read a document. You watch an ad when saving or sharing as PDF, and we tell you before it starts. A small banner sits at the bottom of the start screen.
Opting out of personalized ads
In Android Settings → Privacy → Ads you can delete your advertising ID or turn off personalization. Ads will still appear, but they will not be personalized.
Permissions
Only internet access, used to fetch ads and send usage statistics. We do not request camera, contacts, location, or microphone permissions.
Usage statistics
To improve the app and place ads sensibly, we collect usage statistics with Google Analytics for Firebase. How often and how long you use the app, which features you use (for example opening a file, or watching an ad to save), ad impressions, device model, OS version, app version, country, language, a random identifier tied to each app install and the advertising ID are sent to Google. The contents and names of your documents are never sent. We also use Firebase Remote Config to change ad settings without an app update, which sends the app version, OS version, country and language. In the European Economic Area, the UK and Switzerland, nothing that identifies your device is stored unless you consent.
Third parties
Apart from Google AdMob and Google Analytics for Firebase (see Usage statistics) we use no other analytics or crash reporting, and no external service can see your documents.
Children
HWP Viewer is not directed at children under 13. The app itself does not ask for personal information such as your name or email, but when ads are shown Google AdMob collects an advertising ID, IP address, and device information. That is why this app is not built for children. See the Advertising section above for details.
Deleting your data
Uninstalling the app removes the cache and recent-document list. No copy remains on any server. You can delete your advertising ID yourself in Android Settings > Privacy > Ads.
There is nothing for us to delete
This app has no server holding your data. The on-device cache and recent-document list disappear when you uninstall, and your advertising ID is held by Google, so we can neither look it up nor delete it. Rather than offer to delete data on your behalf, we have written down above how to remove it yourself. Questions: dev@indieway.xyz
Changes and contact
If this policy changes we will update this page with a new date. Contact: dev@indieway.xyz. If you email us through Contact us in the app, we use your email address, your message, and the app and device details added at the end of the message (app version, Android version, device model, app language, theme and font size) only to reply to you.
Notice
This product was developed with reference to the publicly released HWP document file (.hwp) specification from Hancom.