# NIS & RISC Review — Core & Certifying sections

> Core & Certifying sections (iPhone/iPad app by One Rad Studio LLC.)

- Source: https://appshunter.io/ios/app/nis-and-risc-review/id6791406059 (this page in markdown: same URL + `.md`)
- Developer: [One Rad Studio LLC](https://appshunter.io/developer/1836496792)
- Category: Education, Medical
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 16.4 · 68 MB
- Languages: American English
- Released: 2026-07-27
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/nis-and-risc-review/id6791406059/reviews.md

## What is NIS & RISC Review?

Prepare for the Noninterpretive Skills (NIS) and Radioisotope Safety (RISC)
sections of the diagnostic radiology Core and Certifying exams, on a single,
fully offline app built by a practicing diagnostic radiologist.

NIS & RISC Review turns two exhaustively fact-checked question banks into a
focused study loop: learn the high-yield material, drill it at the depth you
need, and track exactly where you stand by domain. No account, no subscription,
no internet required — everything runs on your device.

Start free with the first two sections of each guide. One $4.99 purchase unlocks
everything else, permanently — no subscription, and no repurchase when the
content is updated for a new exam cycle.

FREE TO START
• RISC — radiation protection, and the mathematics of radioactivity measurement.
• NIS — professionalism, and the core concepts of quality and safety.
• Full lessons, essentials sheets, and practice questions for those four
  sections, plus the readiness dashboard, search, and progress tracking.

FULL ACCESS — ONE $4.99 PURCHASE
• Every remaining section of both guides, with all of their lessons, essentials
  sheets, and questions.
• The complete question bank across every practice pool.
• Every future content update, including revisions for later exam cycles.
• One time, not a subscription. Yours forever, on both iPhone and iPad.

WHAT'S INSIDE
• 458 board-style questions (204 RISC, 254 NIS), single-best-answer multiple
  choice, each written to test the exact distinctions these sections care about
  — and independently audited for accuracy.
• 37 concise, cited lessons with high-yield callouts, dose tables, and source
  chips, so you can trace every fact.
• A review-depth dial — study everything, high-yield only, the must-know core,
  or the hand-picked essentials — so you can go as broad or as tight as you
  like, down to a single-day cram before the exam.
• Instant grading with a cited explanation for every answer choice, scored by
  domain, so you always know exactly where you stand.
• Abbreviated "Essentials" cram sheets for every domain — must-know facts, key
  tables, and figures, for a fast pass the day before.
• A readiness dashboard with a per-guide mastery score, a study streak, and a
  next-up lesson from your weakest domain.

TOPICS COVERED
RISC — radiation protection, management of radioactive sources, radiopharma-
ceutical administration, regulatory exposure limits, radiation biology, accident/
incident response, and the math of radioactivity measurement.
NIS — imaging informatics, quality and safety, MR safety and contrast reactions,
professionalism, and reimbursement, regulatory, and legal considerations.

BUILT FOR FOCUS
• 100% offline — study on the wards, in the reading room, on a plane.
• Anonymous — no sign-up, no email, no tracking, no ads.
• Fast, distraction-free interface designed for quick daily reps.
• Report-an-issue on any card or question, so the content keeps improving.

WHO IT'S FOR
Diagnostic radiology residents taking the Core exam and attendings taking the
Certifying exam, who want a rigorous, no-nonsense tool for the NIS and RISC
material and nothing else.

IMPORTANT
This app is an independent study aid. It is not affiliated with, endorsed by, or
sponsored by the American Board of Radiology (ABR) or any certifying body. Content
is for educational use only and does not constitute medical advice. Always verify
clinical values against primary sources before acting on them.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Full Access | $4.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-07-27

No release notes.

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All apps by One Rad Studio LLC: https://appshunter.io/developer/1836496792

## Related topics

[nis risc](https://appshunter.io/ios/topics/nis-risc)

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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 2026-08-26.*