Comparison

Radio Interactive vs CTisus CT Quick Guides

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Radio Interactive

Read full description

Become the radiologist you aspire to be Learn smarter. Train deeper. Grow faster. For every level, in 18 languages. Radio Interactive gives you your personal AI Tutor, Trainer and Mentor — designed by radiologists, for radiologists. Train with authentic clinical cases, receive instant expert-level feedback, and master the skills that truly set you apart. Anytime. Anywhere. From medical student to specialist. Why radiologists train with us • Real clinical cases with high-resolution X-ray, CT and MRI • Adaptive AI tutoring — interactive, not passive • Free-text case discussions (no multiple choice) • Personalized learning paths — identify and close your gaps • Daily micro-learning — progress even on busy shifts • Made in Germany — medical accuracy, privacy and trust Learn radiology as it’s practiced • Make findings, write reports and justify your reasoning • Ask follow-up questions and explore topics in depth • Receive tailored feedback and helpful hints • Build diagnostic confidence case by case Your journey to radiologic excellence starts here. For medical students, residents and board-certified radiologists. No matter your goal — exam preparation, upskilling or career development — your AI mentor supports your learning, thinking and growth. Download now and unlock the potential of modern AI in radiology. Start for free. Go Pro if you want to.

About

CTisus CT Quick Guides

This medical reference app provides radiologists and other healthcare professionals with curated CT images, imaging pearls, and clinical findings across 17 diverse topics. Key information is organized into critical findings, etiology, epidemiology, presentation, and prognosis for each subject.

Highlights
  • Curated CT images
  • Imaging pearls
  • Clinical findings
  • 17 topic sections
  • Critical CT findings
  • Etiology, epidemiology, presentation, prognosis
Features
Read full description

CTisus CT Quick Guides is a unique application that combines select CT images with imaging pearls and important clinical findings across a range of topics important to the radiologist and other medical professionals. The topics are varied and divided into 17 unique sections ranging from the adrenal gland to the vascular system. In each section there are multiple topics ranging from infectious and inflammatory disease to oncology. In each section key information is divided into subsections including  the critical CT findings, etiology, epidemiology, presentation and prognosis. We will continue to expand these modules which have won praise from our users especially as they are shared on our social media pages. Please let us know what additional topics you would like covered and any feedback on how we can improve the application. We hope you find it an important educational experience.

Screenshots

Radio Interactive4 screens
CTisus CT Quick Guides4 screens

Verdict

The call

The clearest difference is iOS requirement: Radio Interactive at 13.0 against CTisus CT Quick Guides's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Radio Interactive ships an update every 4 months, CTisus CT Quick Guides every 6 months. The most recent releases landed on September 14, 2026 and September 6, 2026 respectively.

Scorecard1 real difference · 8 level
Radio Interactive versus CTisus CT Quick Guides: the parameters behind the verdict, then further details
ParameterRadio InteractiveCTisus CT Quick Guides
PriceFreeFree
Rating—4.8 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 4 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size39 MB52 MB
Age rating17+17+
DeveloperRadio Interactive GmbHElliot Fishman

In-app purchases

None

Radio Interactive

No in-app purchases

None

CTisus CT Quick Guides

No in-app purchases

Questions

Is Radio Interactive free?
Radio Interactive is free to download, with no in-app purchases.
Is CTisus CT Quick Guides free?
CTisus CT Quick Guides is free to download, with no in-app purchases.
Do Radio Interactive or CTisus CT Quick Guides have ads?
Neither Radio Interactive nor CTisus CT Quick Guides shows ads.
Which is updated more often, Radio Interactive or CTisus CT Quick Guides?
Radio Interactive ships an update every 4 months, and CTisus CT Quick Guides every 6 months. Most recently, Radio Interactive was updated on September 14, 2026 and CTisus CT Quick Guides on September 6, 2026.

Other comparisons