Unspy vs SentryBlack
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Unspy
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Unspy helps you check a room, a rental or your own home for hidden cameras, unknown trackers and unfamiliar devices - right from your iPhone, with everything processed on-device. HIDDEN CAMERA DETECTOR - Lens Finder: shine the torch and look for the tell-tale glint of a camera lens - Network Radar: see every device on the Wi-Fi you are connected to, including cameras that hide in plain sight - Device names, IP addresses, open ports and a quick risk score for each one TRACKER & SMART TAG FINDER - Bluetooth Sweep lists nearby Bluetooth devices, including possible tracking tags - Sorted by signal strength so you can walk closer and narrow down where a device is MAGNETIC SENSOR - The magnetometer highlights spikes caused by electronics hidden in walls, vents and furniture BUILT FOR TRAVEL - Hotels, rentals, dressing rooms, offices and cars - Works on any Wi-Fi you join; nothing is uploaded and there are no accounts UNSPY PRO Unspy Pro unlocks every tool with a choice of two auto-renewable subscriptions: weekly or monthly. Payment is charged to your Apple Account at confirmation of purchase. Each plan renews automatically unless canceled at least 24 hours before the end of its period. Manage or cancel anytime in your Apple Account settings. Prefer to pay once? Unspy Pro Lifetime unlocks every tool forever with a single one-time purchase - no subscription. Unspy is an aid, not a guarantee: no phone can detect every device. If you believe you are being recorded or tracked, contact local authorities. Privacy Policy: https://akbaralikhasanov-2000.github.io/sentri/privacy.html Terms of Use (EULA): https://akbaralikhasanov-2000.github.io/sentri/terms.html
SentryBlack
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Turn your own iPhone, iPad, or Mac into a private home security camera. Set an old device to watch a room and its screen dims to a discreet dark monitor view ā one that always shows a clear recording indicator, so it is never hidden ā while it detects motion, saves event clips, and streams live to your other devices. Wake it any time with a press-and-hold. PRIVATE BY DESIGN Unlike typical CCTV apps, SentryBlack has no company servers watching your home. Your video stays on YOUR devices and YOUR own private iCloud ā never our cloud, and never a third-party cloud you did not choose. ⢠Live view goes device-to-device and is end-to-end encrypted. ⢠If your network blocks a direct connection, you can optionally add a relay server of your own ā the video through it stays end-to-end encrypted and the relay cannot decrypt it. SentryBlack provides no relay server, and this setting is off unless you fill it in. ⢠Cameras, motion alerts, and clips sync only through your private iCloud. ⢠No account, no sign-up, no tracking. USE ANY DEVICE AS A CAMERA ⢠The screen dims to a dark monitor view with an always-on "REC" indicator and timer ā discreet and power-saving, but never blank. ⢠On-device motion detection saves a clip and snapshot of every event. ⢠Press and hold to wake the screen. MONITOR FROM ANYWHERE ⢠On another device signed into the same iCloud, tap Monitor to see all your cameras. ⢠Get instant push alerts with a snapshot the moment motion is detected. ⢠Watch live video ā fastest on the same Wi-Fi, and end-to-end encrypted everywhere. SENTRYBLACK PRO The free version records with motion detection, sends cross-device alerts, and streams live on your Wi-Fi (with a small banner ad on non-camera screens; iPhone and iPad only ā the Mac app has no ads). SentryBlack Pro adds: ⢠Cloud clip backup to your own iCloud ⢠Unlimited event history ⢠HD live view ⢠Person detection & motion zones ⢠Multiple cameras ⢠No ads Pro is an auto-renewing subscription (monthly or yearly) with a 3-day free trial. One subscription works on iPhone, iPad, and Mac. Payment is charged to your Apple Account; it renews automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in Settings. Note: because Apple stops the camera when an app is in the background or the device is locked, a camera device must stay on and in the app while on duty ā keeping it plugged in is recommended. Please use SentryBlack only to monitor your own property and spaces. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://mwsupplylimited.github.io/sentryblack/privacy.html
Screenshots
Verdict
The clearest difference is ads: Unspy at none against SentryBlack's shown. SentryBlack's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Unspy sells 1 in-app purchase, starting at $9.99 per month and SentryBlack sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Unspy ships an update every 9 days, SentryBlack fortnightly. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.
| Parameter | Unspy | SentryBlack |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days ā better | Fortnightly |
| Ads | No ā better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, Mac ā better |
| Requires iOS | 17.0 | 17.0 |
| Further details ā not scored | ||
| Size | 3 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Akbarali Xasanov | Matthew Wong |
In-app purchases
Unspy
- Sentri Pro$9.991 Month
SentryBlack
- SentryBlack Pro (Monthly)3 Days trial$4.991 Month
- SentryBlack Pro (Yearly)3 Days trial$29.991 Year









