# Isotope Browser vs MRI MASTER

The clearest difference is in-app purchases: Isotope Browser at none against MRI MASTER's 1. Isotope Browser also leads on rating (4.8 vs 4.5) and review sentiment (83% vs 74%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. MRI MASTER sells 1 one-off in-app purchase. Isotope Browser asks for nothing beyond the download.

Isotope Browser holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 27 and 48 respectively. Written reviews point the same way: 83% of Isotope Browser's written reviews are positive against 74% of MRI MASTER's.

Isotope Browser ships an update every 6 weeks, MRI MASTER every 2 months. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Isotope Browser | MRI MASTER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** | [4.5 (48 ratings)](https://appshunter.io/ios/app/mri-master/id1627990872/reviews) |
| Number of ratings | 27 | **48** |
| Positive reviews | **82.6% of reviews** | 74.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 86 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [IAEA](https://appshunter.io/developer/535500126) | [REJOSH GEORGE](https://appshunter.io/developer/1627990874) |

## 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


### MRI MASTER

[App page](https://appshunter.io/ios/app/mri-master/id1627990872)

This app serves as a comprehensive guide for MRI students, radiologists, and technologists. It offers detailed scan planning, a vast protocol library, and in-depth explanations of anatomy, techniques, and physics. It also includes a pathology atlas and an artifact encyclopedia to aid in learning and practice.

**Highlights:** MRI Scan Planning, Protocol Library, Full-Body Anatomy in 3 Planes, Techniques & Parameter Guidance, Sequence Physics & Characteristics, Pathology Atlas, Artifact Encyclopedia

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MRI MASTER OFFLINE VERSION | $10.99 | one-time |


## Frequently asked questions

### Is Isotope Browser free?

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

### Is MRI MASTER free?

MRI MASTER is free to download, with in-app purchases available.

### Which has better reviews, Isotope Browser or MRI MASTER?

Isotope Browser is rated higher. Isotope Browser averages 4.8 out of 5 from 27 ratings, while MRI MASTER averages 4.5 from 48 ratings.

### Do Isotope Browser or MRI MASTER have ads?

Neither Isotope Browser nor MRI MASTER shows ads.

### Which is updated more often, Isotope Browser or MRI MASTER?

Isotope Browser ships an update every 6 weeks, and MRI MASTER every 2 months. Most recently, Isotope Browser was updated on September 21, 2026 and MRI MASTER on September 23, 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.*