NinjaCam: Camera in Background

no required preview, no watermark, background video recorder, hide app, PIN etc

Background Camera & Video Recorder DEV · fourthopt.aiocam

Not rated yet 500K+ downloads v4.1 44 MB Android 5.0+ PEGI 3 · Everyone

Download APK 44 MB All versions

Signature matches the Google Play version Details

Watch the NinjaCam: Camera in Background trailer on YouTube

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At a glance

Latest version: v4.1 (123)
Updated: Sep 6, 2026 (1 month ago)
APK size: 44 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Photography (app)
Listed since: Feb 22, 2021 (at least)
Permissions: 23 (3 sensitive)
Website: 4thopt.blogspot.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

NinjaCam: Camera in Background is an app by Background Camera & Video Recorder DEV in the Photography category, listed since at least February 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.5b, the minimum Android version rose from 4.4 to 5.0. It asks for 23 permissions, 3 of them sensitive: camera, record audio and display over other apps. It asks for the same permissions as version 4.0. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v4.1

• Added Home Cam Mode for caring for pets and babies. • Added Album Credit-based photo enhancement, 2x upscaling, and photo/video date and time imprinting. • Improved the overall UI design. • Improved convenience and usability throughout the app.

Description

From the listing uploaded by “appupdater”.

NINJACAM is high quality background camera app that allows you to take photo and record video without the camera screen. Whether you're playing a game or use other apps, you can take high quality photo and record video even when your smartphone is off. Have you been installed and used the camera app, the background video recorder or camcorder app, the gallery lock app, hide app separately? Now only one NINJACAM is enough. * Features : - High quality background photo camera & background video recorder / camcorder - Additional camera mode & features - Security for private photo / video gallery - PIN lock support & Hide app features [Foreground Service Usage Notice] - This app uses a foreground service to enable video recording even when the screen is turned off. - The user explicitly starts the recording, and a persistent notification is shown in the status bar while recording is in progress. - In accordance with Android’s foreground service policy, this notification ensures that users are clearly aware of the ongoing functionality. NINJACAM is a full-HD background camera app that lets you hide camera screen and you can take photos while using social media apps, games and other apps. It also provides general high quality camera functions for your convenience and additional camera mode such as black screen shooting mode. NINJACAM allows you to continue to record high quality video even if you use other apps or turn off the device screen. NINJACAM is a free camera app that manages your photo vault so no one else can see your precious photos and videos. You can import or export saved photo and video files from external storage. NINJACAM allows you to set your PIN to prevent others from using your app and provides additional app hiding functions such as change the app icon and name, running a calculator and fake PIN code. Also you can safely hide app because the app usage history does not remain even when the app is closed. * Detailed functions : - Camera : auto focus, timer and flash, continuous shooting, front/rear camera, screen off shooting mode - Background video recorder / camcorder : recording high quality video, specify the maximum recording time, mute sound, auto closing app after video recording - Photo/video gallery vault : secure private photo and video album, import and export file function - Security and Hide app : private PIN lock, change app name and icon, run calculator, fake PIN security code - General : vibration on/off, timestamp, SD card storage support * Required permissions : - CAMERA : used to take background photo and background video recorder - RECORD_AUDIO : used to record audio during background video recorder / camcorder - WRITE_EXTERNAL_STORAGE : used to load/save photo and video file from external memory

Version history

5 versions are listed, going back to v2.5b. Since v3.7 it requires Android 5.0+.

v4.1 LATEST Sep 6, 2026 44 MB TRUSTED v4.0 Sep 1, 2026 43.9 MB TRUSTED v3.93 Jul 31, 2026 15.4 MB TRUSTED v3.7 Mar 4, 2026 15.3 MB TRUSTED v2.5b Jun 8, 2024 14.9 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 6, 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 2 other versions checked

Store checks and file details

Developer signature verified Sep 6, 2026
Validated against Google Play Sep 6, 2026
Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Signing certificate (SHA-1)2B:40:0C:EA:84:69:8C:1C:4B:E7:77:94:78:A6:47:C2:A5:D4:70:CE
File MD577758fd014e41c4d0d9d511401845d52
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (23)

NinjaCam: Camera in Background requests 23 permissions, 3 of them sensitive.

Camera Sensitive android.permission.CAMERA
Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
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

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

NinjaCam: Camera in Background APK: questions and answers

Is there a version of NinjaCam: Camera in Background for older Android phones?

The current version needs Android 5.0 or later. Version 2.5b is the newest listed build that installs on Android 4.4 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 2.5b · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is NinjaCam: Camera in Background free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the NinjaCam: Camera in Background APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 77758fd014e41c4d0d9d511401845d52.