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

ClampMeter-AllSun

About

Theta

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Theta-Meter standard e-meter app. Theta-Meter e-meter hardware can be connected to this app using Bluetooth LE 4.0 (or higher) or Wi-Fi connection. This app measures the electric resistance of the object, connected to Theta-Meter e-meter electrodes. This app is not intended to diagnose, treat, cure, or prevent any disease or medical or therapeutic use. Using a needle indicator, this app shows the dynamics of changes in the electrical resistance of an object connected to the Theta-Meter device.

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 update cadence: ClampMeter at every 2 months against Theta's every 31 months. ClampMeter also leads on iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases 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

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 31 months, ClampMeter every 2 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level

Theta versus ClampMeter: the parameters behind the verdict, then further details
Parameter	Theta	ClampMeter
Price	Free	Free
Update frequency	Every 31 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod, Mac — better	iPhone, iPad, iPod
Requires iOS	14.0	9.0 — better
Further details — not scored
Size	8 MB	26 MB
Age rating	4+	17+
Developer	Mikhail Fedorov	ZHANGZHOU 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 31 months, and ClampMeter every 2 months. Most recently, Theta was updated on October 3, 2026 and ClampMeter on October 7, 2026.