Orion Viewer - Pdf & Djvu v0.97.2
APK · 10.9 MB · version code 2486 · Android 4.1+ · uploaded Sep 27, 2026
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v0.97.3, uploaded Oct 7, 2026 — about 9 days after this one.
- Size: this file is 10.9 MB; the latest is 11.2 MB (258.7 KB larger).
- Both versions request the same permissions.
File information
- Version
- v0.97.2 (2486)
- Uploaded
- Sep 27, 2026
- Size
- 10.9 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- ARM 64-bit
- Screen
- Small screens and larger
- MD5
- dfde99364d4581265f8ce7ae4b9cc7d3
- Signing certificate (SHA-1)
- E3:AA:11:6E:6C:10:78:67:6E:83:66:EC:BC:5B:98:B0:F8:3F:D4:92
- Signed by
- CN=Michael Bogdanov, OU=Orion, O=Orion, L=Saint-Petersburg, ST=Russia, C=RU
- File name
- universe-constellation-orion-viewer-2486-76830982-dfde99364d4581265f8ce7ae4b9cc7d3.apk
- Package
- universe.constellation.orion.viewer
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v0.97.2
Added logical page offsets
Added saving of last search query
Permissions (8)
This version requests 8 permissions, 3 of them sensitive.
- Access all files Sensitive android.permission.MANAGE_EXTERNAL_STORAGE
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Internal broadcast protection (app-defined) universe.constellation.orion.viewer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 27, 2026.
- Certificate issued to “Orion” This is the certificate of the Google Play version.
- Same certificate as the 5 other versions checked
Store checks
- Developer signature verified Sep 27, 2026
- Validated against Google Play Sep 27, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (5 other versions compared). AAPKs doesn't scan files itself.
How to install Orion Viewer - Pdf & Djvu on Android 4.1+
You'll need about 21.8 MB of free space.
- Download the APK — tap Download APK above (10.9 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap universe-constellation-orion-viewer-2486-76830982-dfde99364d4581265f8ce7ae4b9cc7d3.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be dfde99364d4581265f8ce7ae4b9cc7d3. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Orion Viewer - Pdf & Djvu — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.