Comparison

EM3720 vs E Sentry Systems

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

EM3720

Features
Read full description

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

About

E Sentry Systems

Features
Read full description

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

EM37201 screens
E Sentry Systems4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences ยท 4 level
EM3720 versus E Sentry Systems: the parameters behind the verdict, then further details
ParameterEM3720E Sentry Systems
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS11.0 โ€” better16.0
Further details โ€” not scored
Size6 MB54 MB
Age rating17+4+
DeveloperZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.IRISS Inc

In-app purchases

None

EM3720

No in-app purchases

None

E Sentry Systems

No in-app purchases

Questions

Is EM3720 free?
EM3720 is free to download, with no in-app purchases.
Is E Sentry Systems free?
E Sentry Systems is free to download, with no in-app purchases.
Do EM3720 or E Sentry Systems have ads?
Neither EM3720 nor E Sentry Systems shows ads.
Which is updated more often, EM3720 or E Sentry Systems?
EM3720 ships an update every 4 months, and E Sentry Systems every 3 weeks. Most recently, EM3720 was updated on November 2, 2026 and E Sentry Systems on November 3, 2026.

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