# Radiology Core vs NIS+RISC Prep

The clearest difference is review sentiment: NIS+RISC Prep at 100% against Radiology Core's 24%. NIS+RISC Prep also leads on rating (5.0 vs 2.9) and update cadence (every 9 days vs every 6 months). Radiology Core's advantage is chart position (#85 vs unranked) and ratings volume (50 vs 11). On price, ads, in-app purchases and monetization model there is nothing between them.

Radiology Core costs $9.99 and NIS+RISC Prep $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NIS+RISC Prep holds the better App Store score, 5.0 against 2.9. Both are backed by a comparable volume of ratings — 50 and 11 respectively. Written reviews point the same way: 24% of Radiology Core's written reviews are positive against 100% of NIS+RISC Prep's.

Radiology Core ships an update every 6 months, NIS+RISC Prep every 9 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Radiology Core | NIS+RISC Prep |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | [2.9 (50 ratings)](https://appshunter.io/ios/app/radiology-core-physics-plus/id1225040758/reviews) | **[5.0 (11 ratings)](https://appshunter.io/ios/app/nis-plus-risc-prep/id6764441298/reviews)** |
| Number of ratings | **50** | 11 |
| Positive reviews | 23.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Best chart rank | **#85** | — |
| Size | 25 MB | 33 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Lieu Duong](https://appshunter.io/developer/1657425589) | [Shawn Thomas](https://appshunter.io/developer/1895782155) |

## What reviewers say

### Radiology Core

[App page](https://appshunter.io/ios/app/radiology-core-physics-plus/id1225040758)

**Currently charting:** #85 Top Paid · Medical (US App Store)

Prepare for the Radiology Core Exam's physics section with a premium resource. Access over 500 board-relevant questions with detailed explanations, covering all modalities and noninterpretive skills. The app is continually updated with new content to enhance your study time.

**Highlights:** Comprehensive physics review, Over 500 board-relevant questions, Full explanation for each question, Covers all modalities, Includes noninterpretive skills, Continually updated content

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

**In-app purchases:** none


### NIS+RISC Prep

[App page](https://appshunter.io/ios/app/nis-plus-risc-prep/id6764441298)

Prepare for the ABR Core Exam's Non-Interpretive Skills and Radioisotope Safety sections with over 700 board-style questions. Features detailed explanations, progress tracking, and a distraction-free interface with light and dark modes. Syncs progress across iPhone and iPad.

**Highlights:** 700+ board-style questions, Detailed explanations, Progress tracking, Timed test mode, Full-text search, Light and dark mode, Cross-device sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Radiology Core free?

Radiology Core costs $9.99, with no in-app purchases.

### Is NIS+RISC Prep free?

NIS+RISC Prep costs $9.99, with no in-app purchases.

### Which has better reviews, Radiology Core or NIS+RISC Prep?

NIS+RISC Prep is rated higher. Radiology Core averages 2.9 out of 5 from 50 ratings, while NIS+RISC Prep averages 5.0 from 11 ratings.

### Do Radiology Core or NIS+RISC Prep have ads?

Neither Radiology Core nor NIS+RISC Prep shows ads.

### Which is updated more often, Radiology Core or NIS+RISC Prep?

Radiology Core ships an update every 6 months, and NIS+RISC Prep every 9 days. Most recently, Radiology Core was updated on October 26, 2026 and NIS+RISC Prep on October 24, 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.*