Recharge Hub vs SentryBlack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Recharge Hub
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Visible Safety · Full-Cycle Real-Time Battery Monitoring Check basic charging data of power banks visually, the whole charging process is transparent and controllable. Three core monitoring dimensions guarantee charging safety: 1. Real-time Voltage / Current / Power Display: Sync input and output charging parameters, you can clearly view the real-time charging status of your device; 2. High-precision Battery Temperature Detection: Accurately capture real-time battery temperature and detect potential battery overheating hazards in time; 3. Complete Historical Usage Logs: Automatically save charging records and device abnormal information, review historical usage records anytime. Four Supporting Service Functions 1. Unified Control of Multiple Devices: Bind multiple Momax power banks, switch to check battery data of different devices with one tap; 2. Personal Service Center: Account management, language switching, user feedback channel and direct access to official store; 3. Product Info Knowledge Base: Built-in device tutorial videos, digital user manuals and full-model FAQs, allowing new users to get started quickly; 4. Continuous OTA Updates: The app is regularly updated to optimize functions, compatible with the brand’s new smart power banks, and planned battery monitoring features will be launched successively. Feedback You can submit your usage suggestions and problems via the "Personal Center - Feedback" section inside the App. We will continuously iterate and optimize the app, launch the planned advanced battery monitoring functions step by step and upgrade your smart charging experience.
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 — one that always shows a clear recording indicator, so it is never hidden — 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 — 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 — 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 — 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 — 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 — 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 — 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 in-app purchases: Recharge Hub at none against SentryBlack's 2. Recharge Hub also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SentryBlack sells 2 in-app purchases, starting at $4.99 per month. Recharge Hub asks for nothing beyond the download.
Recharge Hub ships an update weekly, SentryBlack fortnightly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.
| Parameter | Recharge Hub | SentryBlack |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 61 MB | 17 MB |
| Age rating | 17+ | 4+ |
| Developer | MOMAX | Matthew Wong |
In-app purchases
Recharge Hub
No in-app purchases
SentryBlack
- SentryBlack Pro (Monthly)3 Days trial$4.991 Month
- SentryBlack Pro (Yearly)3 Days trial$29.991 Year









