Gamma Calculator Pro
🇰🇷 KR LocalizedScreenshots
Description
Save time with this exposure calculator for Iridium-192, Selinium-75 and Cobalt-60 sources. No more need to calculate the formula or use of the "old-school plastic calculator" Simply fill in the thickness, activity(in Curies) and source-film-distance and you get the correct exposure time. R factor for different densities and film types. For materials: Iron(steel), Concrete, Tungsten, Lead, Aluminum, Titanium, Copper, Zinc, Brass, Inconel X, Zirconium and Uranium. Features: - Exposure Time calculator - Geometric Unsharpness calculator - Exposure Correction calculator - Decay calculator - Barricade calculator - Pipe Schedule selector (single/double wall) - Weld enforcement setting - Iridium 192 Emissivity setting - inch/mm setting
What's New
Build for IOS 26 New Percentage Change calculator New 5mR barricade New 3exp barricade New experimental materials: + Aluminum + Titanium + Copper + Zinc + Brass + Inconel X + Zirconium + Uranium
Details
- Developer
- Gerrit kleyn Winkel
- Main Category
- Business
- Version
- 2.7.1
- Version Release
- 2026-03-20
- Initial Release
- 2014-05-05
- Size
- 3 MB
- Age Rating
- 17+
- Price
- USD 3.99
- Languages
- EN
- Bundle ID
- klwinkel.com.GammaCalc
- Version Rating
- ★ 3.58 (19)
- First Seen
- 2026-05-28
Metadata updated 2026-06-16
Rank History
Free · Max 90 days · Top 5 categories shown (Y-axis: rank, lower is better)
No rank history data
Free Rankings
No rankings
Paid Rankings
Competitive Benchmark — Business Top 10
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| 10 | Gamma Calculator Pro | USD 3.99 | ★ 3.58 | 19 | 1 | 2026-03-20 |
User Reviews
Between this app and another calculator app (x-ray_timer) I would say my whole shop uses this app for anyone that owns an I-phone. What drives me crazy is when you initially want to change the curie amount and the line always starts in the front of the initial number. Just an extra step moving the line to select the initial number and change it. We use this app every week here in Kansas.
Can you please add the R factor for D3. Also could you please make it so that the SFD and other measurements that need to be precise don’t round up or down?
The app works well on IPhone if you know what you’re doing and double checking it. There are a few mistakes with the schedule thicknesses in the calculator where some measurements are missing decimal places in front so the distance is over a hundred feet.
This thing worked like a dream for years but since the update…it’s junk. Won’t even configure time on iPhone! Fix it or refund my purchase.
4.1 업데이트 후에 안되요 글씨 안보여
Love the app, have been using it for years, but as of today the app will not work on my iPhone after the IOS 16 update. Please fix
The R-factor for AFGA D3 isn’t listed. I would like to know if this will ever be added or fixed. I love the app, but this is the problem I have with it.
App is great for getting shot times. Now…24” 40s and 24” schedule 40 are 2 different thicknesses. 24” 40S is a .375 24” Sch 40 is a .688 I learned the hard way to figure that one out.
Use this everyday, best app for X-ray personnel. I wish the maker of this app would do a code app like b31.3, section 8, api 1104.
No D3 AGFA in R factor chart everything else is great though. If you could add it that would be awesome!
Apk ver both iso ver many funcion difficult
An amazing tool for anybody in Industrial Radiography. I highly recommend it.
Reviews are collected only for apps with detected changes (new entries or sharp risers).