Comparison

Optris calculator vs DVS Events

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

DVS Events

Features
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With the DVS-Event App, you will always be informed. You will receive up-to-date information regarding the program, the venue, the industrial exhibition, and much more for the ITSC 2026 in Bangkok. With this app, you can: - Stay informed and receive real-time updates. - Share your experiences on-site. - Participate in discussions and network with colleagues. - Stay active at ITSC and join our Step Challenge! We wish you an enjoyable and successful event! The organizer may also use the app for lead validation. We value your privacy. The DVS-Event App will always ask for your permission to access specific information or device features to provide you with a richer user experience. The app uses your step count data exclusively for the internal Step Challenge. Participation is voluntary, and your data is only used to determine your ranking during the event. You can withdraw your consent at any time in the settings. Please read our Terms of Use and Privacy Policy in the legal section of our App Store description.

Screenshots

Optris calculator3 screens
DVS Events4 screens

Verdict

The call

The clearest difference is update cadence: DVS Events at every 3 weeks 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, DVS Events every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard1 real difference ยท 5 level
Optris calculator versus DVS Events: the parameters behind the verdict, then further details
ParameterOptris calculatorDVS Events
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS12.012.0
Further details โ€” not scored
Size31 MB20 MB
Age rating4+4+
DeveloperOptris GmbHDVS Media GmbH

In-app purchases

None

Optris calculator

No in-app purchases

None

DVS Events

No in-app purchases

Questions

Is Optris calculator free?
Optris calculator is free to download, with no in-app purchases.
Is DVS Events free?
DVS Events is free to download, with no in-app purchases.
Do Optris calculator or DVS Events have ads?
Neither Optris calculator nor DVS Events shows ads.
Which is updated more often, Optris calculator or DVS Events?
Optris calculator ships an update every 2 months, and DVS Events every 3 weeks. Most recently, Optris calculator was updated on October 27, 2026 and DVS Events on October 28, 2026.

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