# Nuclides — A Handy Helper in Your Pocket

> A Handy Helper in Your Pocket (iPhone/iPad app by 建锋 宋.)

- Source: https://appshunter.io/ios/app/nuclides/id1098794569 (this page in markdown: same URL + `.md`)
- Developer: [建锋 宋](https://appshunter.io/developer/1098794568)
- Category: Education
- Price: Free with in-app purchases (on sale, was $29.99)
- Age rating: 4+
- Requires: iOS 15.6 · 128 MB
- Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2016-06-05
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/nuclides/id1098794569/reviews.md

## What is Nuclides?

Nuclides is a professional reference and calculation toolkit for nuclear technology, radiation protection, nuclear medicine, reactor data, and education.

Key features:
1. Look up elements and nuclides, including half-life, decay modes, parent and daughter nuclides, radiation energies, and emission probabilities.
2. Explore extended nuclear data, including excited levels, gamma transitions, electron data, fission yields, nuclear moments, and ENSDF evaluation information.
3. Simulate gamma spectra from nuclide gamma-ray data with controls for live time, energy resolution, background, dead-time loss, and related detector parameters.
4. Run decay calculations, activity estimation, dose-rate estimation, effective dose estimation, radiation dose comparison, and unit conversions.
5. Use theranostics dosimetry tools for time-activity data, cumulated activity, and simplified MIRD relationships.
6. Consult radiation safety atlas entries, radiopharmaceutical references, material densities, physical constants, binding-energy charts, toxicity information, and the INES scale.
7. Browse nuclear power plant data, operating records, advanced reactor references, and small modular reactor information.

Nuclides is designed for professionals, students, and users who need fast nuclear data lookup, radiation calculations, and clear technical references.

Premium subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Subscription · Monthly | $0.99 | per month |
| Premium Subscription · Yearly | $9.99 | per year |



## Version history (last 5 releases)

### 4.1.2 — 2026-08-20

• Added separate uranium mining and milling content to the nuclear fuel cycle guide and improved stage navigation.
• Improved coordinate handling and map positioning for weather locations.
• Fixed alpha-ray details failing to load when intensity data is missing.

### 4.1.1 — 2026-08-04

Expanded interactive labs and professional tools across radiation protection, environmental monitoring, medical imaging, gamma spectroscopy, plume dispersion, nuclear medicine, fusion, and reactor science. Added learning paths, daily tasks, offline search, learning records, and report sharing. Improved multilingual and phone/tablet layouts. Fixed delayed membership expiry refresh after email sign-in, plus issues with maps, task results, nuclide data, and page state.

### 4.0.0 — 2026-07-02

Major update for professional nuclear and radiation workflows:
- Added a Gamma Spectrum Simulator with nuclide lines, resolution, live time, background, and dead-time controls.
- Expanded nuclide details with levels, gamma transitions, electrons, fission yields, and richer nuclear data views.
- Improved decay and dose calculators, theranostics dosimetry, binding-energy charts, and reactor reference views.
- Refined the mini-program style UI, localization, and iPad layouts for faster lookup and clearer charts.

### 3.8.4 — 2026-04-02

Performance improvements and general optimizations for a smoother experience.

### 3.8.2 — 2026-01-26

1.Added a new minimalist icon style on the Home page, enabled by default (you can switch back to the classic icon style in Settings).
2.Added support for multiple new languages, including Spanish, French, German, Italian, Portuguese (including Brazil), Russian, Arabic, Hindi, Indonesian, Thai, Vietnamese, Turkish, Dutch, Polish, Swedish, Danish, Norwegian, Finnish, Czech, Ukrainian, Hebrew, Malay, Catalan, Croatian, Romanian, Slovak, Greek, and Hungarian.
3.Performance improvements and general optimizations for a smoother experience.

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## More apps by 建锋 宋

- [iPTE](https://appshunter.io/ios/app/ipte/id1502419058)

All apps by 建锋 宋: https://appshunter.io/developer/1098794568

## Related topics

[half life hero](https://appshunter.io/ios/topics/half-life-hero)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*