Comparison

Optris calculator vs Refratechnik Connect

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

Refratechnik Connect

Features
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Refratechnik Connect โ€“ your digital connection to refractory expertise Our app brings you closer to Refratechnik โ€“ directly, mobile, and interactively. It was developed specifically for tech-savvy users to facilitate access to our know-how and simplify communication with us. The aim of the app is to simplify technical feedback, respond more quickly to requests, and identify needs at an early stage. The focus is on user-friendly and practical use. The app already offers a selection of useful functions โ€“ from practical calculation tools to the latest industry news and easy ways to contact our technical sales team. Further digital tools and functions are already in preparation and will be continuously integrated. The myREFRA customer portal: By logging into the myREFRA customer portal, our customers gain access to additional exclusive functions that greatly simplify collaboration. Stay connected. Work smarter. Welcome to Refratechnik Connect.

Screenshots

Optris calculator3 screens
Refratechnik Connect4 screens

Verdict

The call

The clearest difference is update cadence: Refratechnik Connect at every 2 weeks against Optris calculator's every 2 months. Optris calculator's advantage is iOS requirement (12.0 vs 15.0). 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, Refratechnik Connect every 2 weeks. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

Scorecard2 real differences ยท 4 level
Optris calculator versus Refratechnik Connect: the parameters behind the verdict, then further details
ParameterOptris calculatorRefratechnik Connect
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better15.0
Further details โ€” not scored
Size31 MB5 MB
Age rating4+17+
DeveloperOptris GmbHRefratechnik Holding GmbH

In-app purchases

None

Optris calculator

No in-app purchases

None

Refratechnik Connect

No in-app purchases

Questions

Is Optris calculator free?
Optris calculator is free to download, with no in-app purchases.
Is Refratechnik Connect free?
Refratechnik Connect is free to download, with no in-app purchases.
Do Optris calculator or Refratechnik Connect have ads?
Neither Optris calculator nor Refratechnik Connect shows ads.
Which is updated more often, Optris calculator or Refratechnik Connect?
Optris calculator ships an update every 2 months, and Refratechnik Connect every 2 weeks. Most recently, Optris calculator was updated on October 27, 2026 and Refratechnik Connect on November 4, 2026.

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