Isotope Browser vs Rad Onc Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Isotope Browser
Access comprehensive nuclear data for over 4,000 nuclides and isomers. Explore interactive charts, filter by various criteria, and view detailed information for each nuclide. Data is sourced from reliable resources and available offline.
- Properties of over 4,000 nuclides and isomers
- Interactive Chart of Nuclides
- Periodic Table of Elements
- Filter by half-life, decay mode, radiation type, and energy
- Detailed nuclide information with web links
- Offline access to embedded database
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Provided by the Nuclear Data Section of the International Atomic Energy Agency, the app gives properties of more than 4 000 nuclides and isomers. A Chart of Nuclides, with zooming and tapping enabled, and a Periodic Table of Elements are included to allow easy selection and navigation. Filter criteria on half-life, decay mode, radiation type and energy can be selected. Summary data are presented in a scrolling list, with a details page for each nuclide containing web links to the data sources and further information such as level and decay schema. The filtered nuclides can be visualised on the Chart of Nuclides. Data are taken from the most recent and reliable sources, and optimal search-and-retrieve performance is achieved with an embedded database, meaning that no network connection is required.
Rad Onc Calc
A radiation oncology calculator and reference tool for medical professionals. It provides quick access to essential calculations and treatment constraints.
- Radiation oncology calculations
- Treatment constraints reference
- Quick access to essential data
- Comprehensive tool for professionals
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Comprehensive RadOnc calculator and constraints reference for radiation oncologists.
Screenshots
Verdict
The clearest difference is rating: Isotope Browser at 4.8 against Rad Onc Calc's 4.6. Isotope Browser also leads on iOS requirement (11.0 vs 14.0). On price, ratings volume, update cadence and ads 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.
Isotope Browser holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 27 and 12 respectively.
Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | Isotope Browser | Rad Onc Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (27 ratings) — better | 4.6 (12 ratings) |
| Positive reviews | 82.6% of reviews | — |
| Number of ratings | 27 — better | 12 |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 8 MB | 57 MB |
| Age rating | 4+ | 12+ |
| Developer | IAEA | Matthew Culbert |
Customer experience
Isotope Browser
Rad Onc Calc
In-app purchases
Isotope Browser
No in-app purchases
Rad Onc Calc
No in-app purchases
Questions
Is Isotope Browser free?
Is Rad Onc Calc free?
Which has better reviews, Isotope Browser or Rad Onc Calc?
Do Isotope Browser or Rad Onc Calc have ads?
Which is updated more often, Isotope Browser or Rad Onc Calc?
Other comparisons
