NinjaCam: Camera in Background v3.7
APK · 15.3 MB · version code 98 · Android 5.0+ · uploaded Mar 4, 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 v4.1, uploaded Sep 6, 2026 — about 6 months after this one.
- Size: this file is 15.3 MB; the latest is 44 MB (28.7 MB larger).
- The latest version no longer asks for: Read media images, Read media video, Read media visual user selected.
File information
- Version
- v3.7 (98)
- Uploaded
- Mar 4, 2026
- Size
- 15.3 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- fa22365c175094a7604cb31abc154db9
- Signing certificate (SHA-1)
- 2B:40:0C:EA:84:69:8C:1C:4B:E7:77:94:78:A6:47:C2:A5:D4:70:CE
- Signed by
- CN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- File name
- fourthopt-aiocam-98-73797730-fa22365c175094a7604cb31abc154db9.apk
- Package
- fourthopt.aiocam
- Downloads (all versions)
- 500K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.7
[Hot Fix]
• Improved app stability.
• Fixed an error where the video recording date was displayed incorrectly.
Permissions (26)
This version requests 26 permissions, 6 of them sensitive.
- Camera Sensitive android.permission.CAMERA
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Read media images Sensitive android.permission.READ_MEDIA_IMAGES
- Read media video Sensitive android.permission.READ_MEDIA_VIDEO
- Read media visual user selected Sensitive android.permission.READ_MEDIA_VISUAL_USER_SELECTED
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
- Action manage overlay permission android.permission.ACTION_MANAGE_OVERLAY_PERMISSION
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- Flashlight android.permission.FLASHLIGHT
- Foreground service camera android.permission.FOREGROUND_SERVICE_CAMERA
- Foreground service microphone android.permission.FOREGROUND_SERVICE_MICROPHONE
- Full (custom) android.hardware.camera2.full
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Internal broadcast protection (app-defined) fourthopt.aiocam.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- 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 Mar 4, 2026.
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Mar 4, 2026
- Validated against Google Play Mar 4, 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 (4 other versions compared). AAPKs doesn't scan files itself.
How to install NinjaCam: Camera in Background on Android 5.0+
You'll need about 30.5 MB of free space.
- Download the APK — tap Download APK above (15.3 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 fourthopt-aiocam-98-73797730-fa22365c175094a7604cb31abc154db9.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 fa22365c175094a7604cb31abc154db9. 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 NinjaCam: Camera in Background — 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 5.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.