Gamma Calculator Pro vs Evident Link Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gamma Calculator Pro
This app simplifies radiation exposure calculations for industrial radiography sources like Iridium-192. It allows users to input thickness, activity, and distance to determine correct exposure times, and also offers features for geometric unsharpness, exposure correction, and decay calculations.
- Exposure Time Calculator
- Geometric Unsharpness Calculator
- Exposure Correction Calculator
- Decay Calculator
- Barricade Calculator
- Pipe Schedule Selector
- Material Density Calculations
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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
Evident Link Plus
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The Link Plus app enables users to send and receive thickness readings, transfer files, or perform remote commands with the Evident 38DLP ultrasonic thickness gage using a 38-Link wireless adaptor with a Bluetooth dongle and the Evident 39DLP using internal Bluetooth setting. Collected data can be reviewed and then exported or attached to an email or text message in either .CSV, .TXT or .FTP formats.
Screenshots
Verdict
The clearest difference is price: Evident Link Plus at Free against Gamma Calculator Pro's $3.99. Evident Link Plus also leads on iOS requirement (12.0 vs 18.6). Gamma Calculator Pro's advantage is update cadence (every 5 months vs every 53 months) and chart position (#15 vs unranked). On ads, in-app purchases and device support 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
Evident Link Plus is free to download; Gamma Calculator Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Gamma Calculator Pro ships an update every 5 months, Evident Link Plus every 53 months. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.
| Parameter | Gamma Calculator Pro | Evident Link Plus |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 3.6 (19 ratings) — better | — |
| Positive reviews | 52.9% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 5 months — better | Every 53 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #15 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | Gerrit kleyn Winkel | Evident Scientific, Inc. |
In-app purchases
Gamma Calculator Pro
No in-app purchases
Evident Link Plus
No in-app purchases
Questions
Is Gamma Calculator Pro free?
Is Evident Link Plus free?
Do Gamma Calculator Pro or Evident Link Plus have ads?
Which is updated more often, Gamma Calculator Pro or Evident Link Plus?
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