Planets Viewer
v2.1 · 12.4 MB · code 37
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File information
UpdatedMar 17, 2026
PublishedOct 28, 2021
Packagemobile.application.forfree.marsviewer
Versionv2.1 (37)
Size12.4 MB
MD5eacde8778e42129e6551447a4b530a5e
Min SDK23
Malware scanTRUSTED
Signature SHA1C4:C0:EF:CA:69:34:2E:35:A8:D4:BD:47:25:08:C7:E9:4D:AB:D7:32
SignerO=For Free
Total downloads50,000
This version50,000
Developer4 Free
Age ratingEveryone
What's new in v2.1
Optimization and bug fixes
Security scan
TRUSTED
- Developer signature verified 2026-03-17
- Signature SHA1 C4:C0:EF:CA:69:34:2E:35:A8:D4:BD:47:25:08:C7:E9:4D:AB:D7:32
- File MD5 eacde8778e42129e6551447a4b530a5e
How to install Planets Viewer v2.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 12.4 MB of free storage.
- Grab mobile.application.forfree.marsviewer_37.apk — hit the Download button above (12.4 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches eacde8778e42129e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find mobile.application.forfree.marsviewer_37.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read O=For Free. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Planets Viewer — tap Open on the install screen, or find the Planets Viewer icon in your app drawer.
Common install errors for Planets Viewer
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 6.0 Marshmallow or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.