An XDA piece this month made the case that a spare Android phone is a better Raspberry Pi than a Raspberry Pi. The camera, the microphone, the battery, and the always-on radio come free with any phone that is sitting in a drawer. The most direct payoff is turning it into a home security camera. We tested eight of the best old phone security camera apps for Android on two donor devices, a 2019 Pixel and a 2020 Samsung mid-range, focused on motion detection accuracy, remote viewing, and what happens when the app runs for 30 days straight.
What to look for in a security camera app
The category has been around for a decade, so the winners have converged on a similar core, and the tradeoffs are in the corners.
- Motion detection quality. A good detector distinguishes people from swaying curtains and passing cars. A cheap detector sends an alert every ten minutes.
- Cloud vs local recording. Cloud recording survives a broken window. Local recording keeps the video off someone else’s servers.
- Two-way audio. Talking to the delivery driver through the phone is what makes the setup useful, not just a passive recording.
- Background reliability. Android is aggressive about killing background processes. The apps worth using either survive Doze mode or ship instructions for whitelisting.
- Wake lock and thermal behavior. A phone recording 24/7 can cook itself. The picks below either throttle the camera or ship a “keep screen off” mode.
Quick comparison
| App | Best for | Platforms | Free plan | Starting price | Standout feature |
|---|---|---|---|---|---|
| Alfred | Turnkey remote viewing | Android, iOS, web | Yes, with ads | Alfred Premium subscription | 7-day cloud history on premium |
| WardenCam | Google Drive recording | Android, iOS | 7-day trial | One-time unlock | Records to your own Drive |
| IP Webcam | DIY streaming server | Android | Yes | Pro one-time unlock | Local RTSP stream to any viewer |
| tinyCam Monitor | Multi-camera viewer | Android | Free tier | Pro one-time unlock | Watches Alfred, IP Webcam, and IP cams together |
| AtHome Camera | Cross-device pairing | Android, iOS, Windows, macOS | Free tier | Premium subscription | Windows and Mac viewer |
| Manything | Cloud recording with rules | Android, iOS, web | Live view free | Subscription for recording | HomeKit integration on iOS |
| Salient Eye | Alarm mode, no recording | Android | Yes | Ad removal one-time | Loud siren on motion |
| Haven | Physical intrusion detection | Android | Free, open source | Free | Uses every sensor, not just the camera |
The apps
1. Alfred Home Security Camera — Best for turnkey remote viewing
Alfred is the app most people install first. Sign in on the donor phone and on your daily phone with the same account, and the donor becomes a camera the daily one can view live over the internet. Motion detection is decent, the two-way talk works, and the setup takes under five minutes. The free tier is enough for a single camera at a front door.
Where it falls short: Free tier is ad-supported and caps clip history at a short window. Higher-resolution streaming and longer history sit behind Alfred Premium. Ads before a live view feel intrusive.
Pricing:
- Free: Live view, motion alerts, short clip history, ad-supported
- Paid: Alfred Premium, subscription, unlocks HD streaming and 7-day cloud history
Platforms: Android, iOS, Web
Download: Aptoide · Google Play
Bottom line: Alfred is the pick when you want the phone to become a camera in five minutes and never touch it again.
2. WardenCam — Best for recording to your own Google Drive
WardenCam takes the same phone-as-camera pattern but stores motion clips to your Google Drive or Dropbox instead of the developer’s servers. That single decision matters if the camera is inside a home and you would rather not upload continuous footage to a third-party cloud you cannot audit.
Where it falls short: Cloud storage cost is on you. A busy front-door camera will burn through a small Drive quota fast. The UI feels a step behind Alfred’s.
Pricing:
- Free: 7-day trial with full features
- Paid: One-time unlock for continued use
Platforms: Android, iOS
Download: Aptoide · Google Play
Bottom line: WardenCam is the pick when the storage location matters more than the polish.
3. IP Webcam — Best for a DIY streaming server
IP Webcam turns the phone into a local RTSP and MJPEG server. Point any camera viewer, VLC, Home Assistant, Frigate, Blue Iris, at the phone’s IP address and the stream comes through. Nothing leaves your network unless you route it out yourself.
Where it falls short: The interface is functional and dated. No cloud viewer, no built-in motion recording. You are the sysadmin.
Pricing:
- Free: Full core feature set
- Paid: Pro one-time unlock adds recording, motion detection, and password protection
Platforms: Android
Download: Aptoide · Google Play
Bottom line: IP Webcam is the right first install if you already run Home Assistant or Frigate and want the phone to feed the same NVR.
4. tinyCam Monitor — Best for a multi-camera viewer
tinyCam Monitor is the viewer half of the equation. Feed it Alfred cameras, IP Webcam streams, RTSP feeds from cheap Chinese cameras, and Ring or Nest streams, and it presents them all in one grid on your daily phone. It also records to a NAS and to the phone’s own storage.
Where it falls short: Not a source itself. You still need one of the other apps on the donor phone. Pro unlock is required for most of the useful features.
Pricing:
- Free: Basic viewer, ad-supported
- Paid: Pro one-time unlock
Platforms: Android
Download: Aptoide · Google Play
Bottom line: tinyCam is the daily-phone side of a multi-camera setup, especially if you mix phones and real IP cameras.
5. AtHome Camera — Best for cross-device pairing
AtHome Camera ships viewer builds for Windows and macOS in addition to Android and iOS. Pair the donor phone with a desktop viewer and you get a live tile on the computer you already have open all day. Motion detection alerts route to any of the paired devices.
Where it falls short: Free tier is limited. Premium subscription unlocks the useful features, and pricing has changed a few times in the last two years.
Pricing:
- Free: Live view, basic detection
- Paid: Premium subscription for HD, extended cloud storage, and multiple cameras
Platforms: Android, iOS, Windows, macOS
Download: Aptoide · Google Play
Bottom line: AtHome is the pick when your daily driver is a Windows or macOS desktop, not another phone.
6. Manything — Best for cloud recording with rules
Manything focuses on continuous cloud recording, timelapse capture, and if-this-then-that rules for what triggers what. It integrates with HomeKit on iOS and offers webhook triggers on Android, which lets it slot into a wider automation system.
Where it falls short: Live view is free but recording costs. The subscription tier is the point of the app, not a nice-to-have.
Pricing:
- Free: Live view only
- Paid: Subscription for recording and rules
Platforms: Android, iOS, Web
Download: Aptoide · Google Play
Bottom line: Manything is the pick when the camera is part of a broader home automation setup, not a standalone.
7. Salient Eye — Best for a phone as a loud alarm
Salient Eye does not record video. Motion on camera triggers a siren from the phone’s speaker, sends a push notification, and grabs a still image. That is the whole product. On a suitcase in a hotel or a laptop bag left in a cafe, that is exactly enough.
Where it falls short: No live view, no continuous recording. If you want to check on the camera remotely, this is not the pick.
Pricing:
- Free: Full feature set, ad-supported
- Paid: One-time ad removal
Platforms: Android
Download: Aptoide · Google Play
Bottom line: Salient Eye is the pick when the goal is a scary siren, not evidence recording.
8. Haven — Best for full physical intrusion detection
Haven is the open-source project from The Guardian Project and Edward Snowden. It uses every sensor on the phone, not just the camera. Accelerometer, light sensor, microphone, and camera all watch for change. Any anomaly triggers logs and an encrypted alert to another phone. It was built for journalists and activists, but the model is the same.
Where it falls short: Not on the Play Store any more. Setup is more involved than the mainstream picks. The alert channel needs some care to get right.
Pricing:
- Free: Fully open source
- Paid: None
Platforms: Android
Download: F-Droid
Bottom line: Haven is the pick when the threat model is physical access to a device, not a garden fox setting off the front door camera.
How to pick the right one
- If you want the easiest install and remote viewing: Alfred.
- If you would rather store footage in your own Google Drive: WardenCam.
- If you already run Home Assistant or Frigate: IP Webcam feeding the existing NVR.
- If you have multiple cameras to view at once: tinyCam Monitor on the daily phone, IP Webcam or Alfred on the donors.
- If your daily driver is a Windows or Mac desktop: AtHome Camera.
- If the camera is part of a wider automation setup: Manything.
- If the phone should be an alarm, not a recorder: Salient Eye.
- If your threat model is physical access to your device: Haven.
FAQ
Do these apps drain the battery? A phone as a camera should stay plugged in. Motion detection and camera streaming are heavy on the battery; the display can be off, but the phone should be on a charger.
Can I use a phone with a broken screen? Yes, if the touchscreen still responds long enough to complete setup. Once configured, most apps let you switch the display off and keep recording.
Is Wi-Fi reliable for a permanent camera? For a single camera at a front door, yes. For multiple donor phones inside a home, a 2.4 GHz Wi-Fi channel that already carries other IoT traffic will struggle. Segment onto a separate SSID if you can.
Which app has the best free tier? Alfred if you want polish and remote viewing. IP Webcam if you want local control and no accounts.
Can I use an old iPhone with these apps? Alfred, AtHome Camera, and Manything all ship iOS builds and are designed to work cross-platform. IP Webcam and the others on this list are Android-only.
Does the phone need to keep its SIM card? No. Wi-Fi is enough. Removing the SIM also prevents the phone from calling out over cellular if it ever reboots into an ambiguous state.
