Comparison

EM3720 vs VoltSense

Price, ratings, monetisation and update history for both apps, side by side — 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 – less re-checking 3.Problems captured - so repairs are easier Works on all iPhone, IPads, IPad Touches

About

VoltSense

Features
Read full description

This app is a companion to the VoltSense device, providing real-time monitoring and management of your boat's systems. Access is included with the device purchase. VoltSense helps you monitor your boat 24/7, providing peace of mind whether your vessel is docked, in storage, or out at sea. Designed for both individual boat owners and marina operators, the VoltSense app connects seamlessly to VoltSense devices, delivering critical insights and alerts in real time. Key Features: ‣ Live Metrics Dashboard: Access real-time data on your boat's battery voltage, temperature, humidity and more. ‣ Instant Alerts: Get push notifications for low battery levels, critical temperature changes, water ingress or motion detection. ‣ Trip Logs and Event History: View detailed records of your boat's performance, including movement, environmental conditions and more. ‣ Geofence Security: Stay in control of your boat's location and get alerted on movements beyond a set area, protecting against unauthorized use or unexpected drift. ‣ Multi-Boat Management: Ideal for professional operators or marina managers, VoltSense makes it possible to manage multiple vessels from a single account. ‣ Easy Setup: Activate and connect your VoltSense system in minutes, with all data accessible directly from your mobile device. Stay connected to your boat, anywhere, anytime. Download VoltSense today and enjoy the ultimate smart boating experience.

Screenshots

EM37201 screens
VoltSense4 screens

Verdict

The call

The clearest difference is iOS requirement: EM3720 at 11.0 against VoltSense's 15.0. On price, update cadence, ads and in-app purchases 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

CostPrice Ā· In-app purchases Ā· Ads Ā· 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, VoltSense every 7 months. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

Scorecard1 real difference Ā· 5 level
EM3720 versus VoltSense: the parameters behind the verdict, then further details
ParameterEM3720VoltSense
PriceFreeFree
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size6 MB70 MB
Age rating17+4+
DeveloperZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.Purpletail OU

In-app purchases

None

EM3720

No in-app purchases

None

VoltSense

No in-app purchases

Questions

Is EM3720 free?
EM3720 is free to download, with no in-app purchases.
Is VoltSense free?
VoltSense is free to download, with no in-app purchases.
Do EM3720 or VoltSense have ads?
Neither EM3720 nor VoltSense shows ads.
Which is updated more often, EM3720 or VoltSense?
EM3720 ships an update every 4 months, and VoltSense every 7 months. Most recently, EM3720 was updated on September 18, 2026 and VoltSense on September 9, 2026.

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