# Isotope Browser vs RPN 50g

The clearest difference is price: Isotope Browser at Free against RPN 50g's $5.99. Isotope Browser also leads on ratings volume (27 vs 1) and iOS requirement (11.0 vs 16.0). RPN 50g's advantage is update cadence (weekly vs every 6 weeks). On rating, ads, in-app purchases and device support there is nothing between them.

Isotope Browser is free to download; RPN 50g costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN 50g holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Isotope Browser has 27 ratings behind it against 1, so its average is the more settled of the two.

Isotope Browser ships an update every 6 weeks, RPN 50g weekly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Isotope Browser | RPN 50g |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rpn-50g/id6811794850/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 30 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [IAEA](https://appshunter.io/developer/535500126) | [Guglielmo Pasa](https://appshunter.io/developer/417854438) |

## What reviewers say

### Isotope Browser

[App page](https://appshunter.io/ios/app/isotope-browser/id943890538)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RPN 50g

[App page](https://appshunter.io/ios/app/rpn-50g/id6811794850)

This app emulates a powerful graphing calculator, offering advanced computation, graphing, and programming capabilities. It preserves the exact functionality and user experience of the original hardware, allowing for offline use and access to original firmware.

**Highlights:** Advanced computer algebra system, Comprehensive scientific calculator functions, 2D and 3D graphing capabilities, RPL programming support, Equation Library with over 300 equations, Offline functionality, SD card integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Isotope Browser free?

Isotope Browser is free to download, with no in-app purchases.

### Is RPN 50g free?

RPN 50g costs $5.99, with no in-app purchases.

### Which has better reviews, Isotope Browser or RPN 50g?

RPN 50g is rated higher. Isotope Browser averages 4.8 out of 5 from 27 ratings, while RPN 50g averages 5.0 from 1 ratings.

### Do Isotope Browser or RPN 50g have ads?

Neither Isotope Browser nor RPN 50g shows ads.

### Which is updated more often, Isotope Browser or RPN 50g?

Isotope Browser ships an update every 6 weeks, and RPN 50g weekly. Most recently, Isotope Browser was updated on October 24, 2026 and RPN 50g on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*