EQD2 Calculator vs CritiCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EQD2 Calculator
Calculate radiation dose in equivalent 2 Gy fractions and biological equivalent dose (BED). The app offers selectable alpha beta ratios for normal tissues and tumors, and includes a dose conversion mode for custom calculations.
- Calculate EQD2
- Calculate BED
- Selectable alpha beta ratios
- Dose conversion mode
- Custom dose per fraction calculation
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Quickly calculate radiation dose in equivalent 2 Gy fractions and biological equivalent dose (BED). Calculator output shows EQD2 and BED based on multiple alpha beta ratios. This app includes a selectable list of alpha beta values of normal tissues and tumors. This app features a dose conversion mode in order to calculate a custom dose per fraction.
CritiCalc
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Simple tool for calculating a variety of transport medicine problems. This is not a tool for self-diagnosis and is meant to aid medical professionals that have been trained in these tools. Please seek medical help from a doctor as these tools in isolation are insufficient to provide medical advice. If you are a medical provider, please cross reference local policies, protocols, and training. No guarantee is provided to the accuracy of these tools.
Screenshots
Verdict
The clearest difference is iOS requirement: EQD2 Calculator at 10.0 against CritiCalc's 15.6. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
EQD2 Calculator ships an update monthly, CritiCalc every 2 weeks. The most recent releases landed on August 15, 2026 and September 13, 2026 respectively.
| Parameter | EQD2 Calculator | CritiCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 53 MB |
| Age rating | 4+ | 17+ |
| Developer | Jon Giambattista | Jason Richmond |
In-app purchases
EQD2 Calculator
No in-app purchases
CritiCalc
No in-app purchases
