Isotope Browser vs College Decoded SAT/ACT Prep
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.
College Decoded SAT/ACT Prep
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College Decoded is the SAT & ACT prep app built for students who want focused practice, score prediction, and a clear study loop. Start with a 20-question diagnostic that gives you a starting score in under 15 minutes. Then practice the gaps that move it, with SAT and ACT questions and written explanations. Premium unlocks unlimited practice, score prediction tools, written explanations, and premium study features. Terms of Use: https://collegedecoded.com/terms Privacy Policy: https://collegedecoded.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Isotope Browser at every 6 weeks against College Decoded SAT/ACT Prep's every 3 months. Isotope Browser also leads on iOS requirement (11.0 vs 15.1). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Isotope Browser ships an update every 6 weeks, College Decoded SAT/ACT Prep every 3 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.
| Parameter | Isotope Browser | College Decoded SAT/ACT Prep |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (27 ratings) — better | — |
| Positive reviews | 82.6% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 8 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | IAEA | College Decoded LLC |
In-app purchases
Isotope Browser
No in-app purchases
College Decoded SAT/ACT Prep
No in-app purchases
Questions
Is Isotope Browser free?
Is College Decoded SAT/ACT Prep free?
Do Isotope Browser or College Decoded SAT/ACT Prep have ads?
Which is updated more often, Isotope Browser or College Decoded SAT/ACT Prep?
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