EM3720 vs E Sentry Systems
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
EM3720
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EM3720 App is for use with the EM3720 Meter. It enables your iOS device to View, Monitor, and Capture Pictures. As well as, Data Log the date/time stamped readings of the Smart Meter to Phones & Tablets. The exported test results can be shared via EMAIL, TEXT, PICTURE, and to EXCEL Wirelessly connects via Bluetooth to view AC voltage, DC voltage, Resistance, Continuity and Diode Test Saves Time and Money: 1.Identifies, alerts, captures and sends data instantly 2.Maximizes time โ less re-checking 3.Problems captured - so repairs are easier Works on all iPhone, IPads, IPad Touches
E Sentry Systems
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Activate and manage your E Sentry System assets. Users with an NFC compatible device can inspect asset tags to view and submit information, updating its history with the cloud. Activated users can view their assigned routes and designate their current route as needed, showing them which assets require an inspection and cataloging their progress through the route. All check-in information is synched with the cloud service allowing admins to review completed and assigned routes, create new routes, and review inspection history on each asset tag. Historical information is converted into trends and can be exported into an excel compatible document for review and maintenance.
Screenshots
Verdict
The clearest difference is update cadence: E Sentry Systems at every 3 weeks against EM3720's every 4 months. EM3720's advantage is iOS requirement (11.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EM3720 ships an update every 4 months, E Sentry Systems every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | EM3720 | E Sentry Systems |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 3 weeks โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 11.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 6 MB | 54 MB |
| Age rating | 17+ | 4+ |
| Developer | ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD. | IRISS Inc |
In-app purchases
EM3720
No in-app purchases
E Sentry Systems
No in-app purchases









