Muscular system
v7.2.1 · 8.2 MB · code 702010
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File information
UpdatedSep 20, 2020
PublishedOct 22, 2017
Packagecom.do_apps.catalog_484
Versionv7.2.1 (702010)
Size8.2 MB
MD52f77ff3ba7b5178b954952d58a2735ff
Min SDK14
Malware scanTRUSTED
Signature SHA197:C0:90:78:45:8E:B0:1D:0D:1D:75:E5:0F:68:C1:E2:65:85:BF:D1
SignerCN=Kirill Sidorov, C=RU
Total downloads100,000
This version100,000
DeveloperKirill Sidorov
Age ratingEveryone
What's new in v7.2.1
Improved downloading of images for offline use, updated content of articles, various minor fixes
Security scan
TRUSTED
- Developer signature verified 2017-10-22
- Scanned for malware 2020-11-22 23:58:26
- Signature SHA1 97:C0:90:78:45:8E:B0:1D:0D:1D:75:E5:0F:68:C1:E2:65:85:BF:D1
- File MD5 2f77ff3ba7b5178b954952d58a2735ff
How to install Muscular system v7.2.1 on Android API 14+
Takes about 2 minutes. You'll need roughly 8.2 MB of free storage.
- Grab com.do_apps.catalog_484_702010.apk — hit the Download button above (8.2 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 2f77ff3ba7b5178b…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.do_apps.catalog_484_702010.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 CN=Kirill Sidorov, C=RU. 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 Muscular system — tap Open on the install screen, or find the Muscular system icon in your app drawer.
Common install errors for Muscular system
- "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 API 14 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.