Comparison

Theta vs ClampMeter

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

Head to head
About

Theta

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Theta-Meter X Theta-Meter X is a companion application designed to work with compatible Theta-Meter hardware devices.  The app connects via Bluetooth Low Energy (BLE 4.0 or higher) or Wi-Fi and displays real-time electrical resistance  measurements from objects connected to the device’s electrodes. Key Features: - Real-time visualization of electrical resistance changes - Clear analog-style needle indicator for dynamic monitoring - Bluetooth LE and Wi-Fi connectivity - Simple, user-friendly interface - Stable data transmission from supported hardware devices How It Works When connected to a compatible device, the app measures and displays variations in electrical resistance detected between  attached electrodes. The needle indicator provides a continuous visual representation of resistance fluctuations, allowing  users to observe dynamic changes over time. Intended Use Theta-Meter X is designed for general experimental, educational, and technical purposes involving electrical resistance measurement.  It is intended for use with compatible hardware devices only. Important Notice This application and the associated hardware are not medical devices. They are not intended for diagnosing, treating, curing,  preventing, or mitigating any disease or health condition. The app does not provide medical, therapeutic, or psychological advice.

About

ClampMeter

Features
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Application features: - Multiple Bluetooth clamp meters, such as EM4655、EM4658 -Fully display clamp dial data -Fully control of gear position through Bluetooth Preconditions for using: - Use the AllSun Bluetooth Clamp Meters (EM4655、EM4658) - IOS 8.3 or an updated version is required to support Bluetooth 4.0 and above devices

Screenshots

Theta2 screens
ClampMeter3 screens

Verdict

The call

The clearest difference is iOS requirement: ClampMeter at 9.0 against Theta's 17. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Theta ships an update every 3 months, ClampMeter every 2 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 5 level
Theta versus ClampMeter: the parameters behind the verdict, then further details
ParameterThetaClampMeter
PriceFreeFree
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS179.0 — better
Further details — not scored
Size18 MB26 MB
Age rating12+17+
DeveloperMikhail FedorovZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.

In-app purchases

None

Theta

No in-app purchases

None

ClampMeter

No in-app purchases

Questions

Is Theta free?
Theta is free to download, with no in-app purchases.
Is ClampMeter free?
ClampMeter is free to download, with no in-app purchases.
Do Theta or ClampMeter have ads?
Neither Theta nor ClampMeter shows ads.
Which is updated more often, Theta or ClampMeter?
Theta ships an update every 3 months, and ClampMeter every 2 months. Most recently, Theta was updated on October 29, 2026 and ClampMeter on October 27, 2026.

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