NinjaCam: Camera in Background
v3.65 · 15 MB · code 97
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File information
UpdatedSep 9, 2025
PublishedFeb 22, 2021
Packagefourthopt.aiocam
Versionv3.65 (97)
Size15 MB
MD52887227a949304ea485be59a3b47cdcc
Min SDK21
Malware scanTRUSTED
Signature SHA12B:40:0C:EA:84:69:8C:1C:4B:E7:77:94:78:A6:47:C2:A5:D4:70:CE
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads500,000
This version500,000
DeveloperBackground Camera & Video Recorder DEV
Age ratingEveryone
What's new in v3.65
[Hot Fix]
• Improved camera stability on the latest Android devices
• Fixed wide-angle camera switching logic error
• Fixed recording errors occurring on some devices
[New Features]
• Added an option in the Options menu to restore in‑app purchases and view restoration history.
• Improved camera stability on the latest Android devices
• Fixed wide-angle camera switching logic error
• Fixed recording errors occurring on some devices
[New Features]
• Added an option in the Options menu to restore in‑app purchases and view restoration history.
Security scan
TRUSTED
- Developer signature verified 2025-09-09
- Signature SHA1 2B:40:0C:EA:84:69:8C:1C:4B:E7:77:94:78:A6:47:C2:A5:D4:70:CE
- File MD5 2887227a949304ea485be59a3b47cdcc
How to install NinjaCam: Camera in Background v3.65 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 15 MB of free storage.
- Grab fourthopt.aiocam_97.apk — hit the Download button above (15 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 2887227a949304ea…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find fourthopt.aiocam_97.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=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US. 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 NinjaCam: Camera in Background — tap Open on the install screen, or find the NinjaCam: Camera in Background icon in your app drawer.
Common install errors for NinjaCam: Camera in Background
- "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 5.0 Lollipop 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.