PicDiff vs Optris calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PicDiff
Compare photos with precision by overlaying two images. Analyze subtle differences down to the pixel with an intuitive and user-friendly interface, perfect for professionals and enthusiasts alike.
- Overlay comparisons
- Pixel-level precision
- User-friendly interface
- In-depth photo analysis
- Subtle variation detection
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Introducing PicDiff: Your Go-To iOS App for In-depth Photo Comparisons! With PicDiff, delve deep into the essence of your images by overlaying two photos for a thorough comparison. Whether you're a professional photographer, a designer looking for subtle variations, or just curious about the changes between two moments captured, PicDiff is designed just for you. Key Features: - Overlay Comparisons: Effortlessly layer two images for an in-depth juxtaposition. - Pixel-level Precision: Analyze differences with unmatched accuracy down to the pixel. - User-friendly Experience: Navigating and comparing has never been more straightforward with our intuitive design. Dive into the world of detailed photo analysis. Experience the unmatched capability of PicDiff now! [Privacy Policy] https://aceca.co.jp/privacy/privacy-photocomp.html [Terms of Use] https://aceca.co.jp/terms/terms-photocomp.html This application includes Apache License, Version 2.0 work. Icons by Icons8 https://icons8.com/ Note : Please use this application at your own risk. We can not be held liable or responsible for any damages caused by using this application.
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: • Calculates the spot size of each device for each distance • Always up to date through regular updates
Screenshots
Verdict
The clearest difference is in-app purchases: Optris calculator at none against PicDiff's 1. Optris calculator also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PicDiff sells 1 one-off in-app purchase. Optris calculator asks for nothing beyond the download.
PicDiff ships an update monthly, Optris calculator every 2 months. The most recent releases landed on October 11, 2026 and September 20, 2026 respectively.
| Parameter | PicDiff | Optris calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 23 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Aceca Corp. | Optris GmbH |
In-app purchases
PicDiff
- Upgrade$17.99
Optris calculator
No in-app purchases
Questions
Is PicDiff free?
Is Optris calculator free?
Do PicDiff or Optris calculator have ads?
Which is updated more often, PicDiff or Optris calculator?
Other comparisons
