Optris calculator vs Refratechnik Connect
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
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: โข Calculates the spot size of each device for each distance โข Always up to date through regular updates
Refratechnik Connect
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Optris calculator | Refratechnik Connect |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 31 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | Optris GmbH | Refratechnik Holding GmbH |
In-app purchases
Optris calculator
No in-app purchases
Refratechnik Connect
No in-app purchases
Questions
Is Optris calculator free?
Is Refratechnik Connect free?
Do Optris calculator or Refratechnik Connect have ads?
Which is updated more often, Optris calculator or Refratechnik Connect?
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