Comparison

Optris calculator vs SmartCell Guide

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

Read full description

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

SmartCell Guide

Features
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SmartCell Guide offers a host of practical features. Working out of hours or in a different time zone? SmartCell Guide has you covered. WORK OFFLINE - SmartCell Guide leads you through the setting up an entire system without a network connection. It can be viewed when you're out of phone signal and no WIFI is available, or if you're just trying to save battery life. Offline media includes full details on; SmartCell devices, system configuration, system maintenance, fault resolution, a resistor calculator and a handy scanner for device barcodes and QR codes. SmartCell Guide provides additional online links to; SmartCell YouTube channel, technical publications and EMS technical support - all in one place for the first time! There is also a feedback feature that allows the user to help shape the future development of the app. SmartCell Guide is multilingual, now supporting eleven languages. Download the EMS SmartCell Guide today.

Screenshots

Optris calculator3 screens
SmartCell Guide4 screens

Verdict

The call

The clearest difference is iOS requirement: Optris calculator at 12.0 against SmartCell Guide's 15.0. On price, update cadence, ads and in-app purchases 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, SmartCell Guide monthly. The most recent releases landed on December 3, 2025 and May 19, 2026 respectively.

Scorecard1 real difference ยท 5 level
Optris calculator versus SmartCell Guide: the parameters behind the verdict, then further details
ParameterOptris calculatorSmartCell Guide
PriceFreeFree
Update frequencyEvery 2 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better15.0
Further details โ€” not scored
Size31 MB489 MB
Age rating4+17+
DeveloperOptris GmbHElectronic Modular Services Ltd

In-app purchases

None

Optris calculator

No in-app purchases

None

SmartCell Guide

No in-app purchases

Questions

Is Optris calculator free?
Optris calculator is free to download, with no in-app purchases.
Is SmartCell Guide free?
SmartCell Guide is free to download, with no in-app purchases.
Do Optris calculator or SmartCell Guide have ads?
Neither Optris calculator nor SmartCell Guide shows ads.
Which is updated more often, Optris calculator or SmartCell Guide?
Optris calculator ships an update every 2 months, and SmartCell Guide monthly. Most recently, Optris calculator was updated on December 3, 2025 and SmartCell Guide on May 19, 2026.

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