Comparison

Optris calculator vs Wireless Measurement Device

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

Head to head
About

Optris calculator

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The Optris Calculator app combines the spot size calculator of the IR pyrometers and the optics calculator of the IR cameras from Optris. For each distance, the spot size of the respective device is calculated. For a correct temperature measurement with pyrometers, it is important that the spot size is not larger than the object to be measured. In the case of the cameras, the measuring area on the object surface to be analyzed is precisely determined. Based on lens information and the distance to the target, field of view dimensions, pixel size (IFOV), and MFOV (from 2x2 pixels to 4x4 pixels depending on product type) are precisely calculated. Thus, the thermal imaging camera can be optimally positioned, and measurement errors avoided. The Optris Calculator is a very helpful tool for selecting the appropriate optics fitting to the respective application. The right choice of optics is needed. App features: โ€ข Calculates the spot size of each device for each distance โ€ข Always up to date through regular updates

About

Wireless Measurement Device

Features
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Wireless Measurement Device from Terex allows users to connect to up to 4 local Bluetooth sensors to view and record live data as well as share saved data directly from their mobile device.

Screenshots

Optris calculator3 screens
Wireless Measurement Device4 screens

Verdict

The call

The clearest difference is update cadence: Wireless Measurement Device at every 2 days against Optris calculator's every 2 months. 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

Optris calculator ships an update every 2 months, Wireless Measurement Device every 2 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
Optris calculator versus Wireless Measurement Device: the parameters behind the verdict, then further details
ParameterOptris calculatorWireless Measurement Device
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better13.0
Further details โ€” not scored
Size31 MB27 MB
Age rating4+4+
DeveloperOptris GmbHTerex Corporation

In-app purchases

None

Optris calculator

No in-app purchases

None

Wireless Measurement Device

No in-app purchases

Questions

Is Optris calculator free?
Optris calculator is free to download, with no in-app purchases.
Is Wireless Measurement Device free?
Wireless Measurement Device is free to download, with no in-app purchases.
Do Optris calculator or Wireless Measurement Device have ads?
Neither Optris calculator nor Wireless Measurement Device shows ads.
Which is updated more often, Optris calculator or Wireless Measurement Device?
Optris calculator ships an update every 2 months, and Wireless Measurement Device every 2 days. Most recently, Optris calculator was updated on October 27, 2026 and Wireless Measurement Device on October 31, 2026.

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