Comparison

Radiology Toolbox Lite vs CTisus iPearls

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

Head to head
About

Radiology Toolbox Lite

This medical reference app provides quick access to essential facts and tools for radiologists, residents, and students. It includes calculators, criteria, and reference data that are frequently looked up, with an option to unlock more content via in-app purchase.

Highlights
  • Radiographic contrast premedication
  • GFR calculator
  • Solitary pulmonary nodule criteria
  • Gastric Emptying times
  • Radioisotope half lives
  • In-app purchase for Pro version
Features
Read full description

Radiology Toolbox is the radiologist’s ectopic brain. Now downloaded by more than 79,000 users in over 115 countries! Radiology Toolbox is designed by a practicing radiologist to help radiologists, residents, medical students, radiology technologists and technology students. These are the facts you keep looking up over and over. We looked them up so you don't have to! Always available on your iPhone or iPad. *** Free introductory version! *** Useful tools include: * Radiographic contrast premedication * GFR calculator * Solitary pulmonary nodule criteria * Gastric Emptying times * Radioisotope half lives Many more tools available through an In-app purchase to the full content from the Pro version.

About

CTisus iPearls

This app provides diagnostic radiologists with valuable insights and facts, known as "pearls," to aid in correct diagnoses and understanding of radiologic images. It organizes these pearls across 28 popular categories and includes a search feature for easy access to thousands of pieces of knowledge.

Highlights
  • Diagnostic radiology pearls
  • Thousands of insights
  • 28 popular categories
  • Search functionality
  • Radiologic image understanding
Features
Read full description

To most people, pearls are considered precious gems, and are among the most popular jewels in the world. It should not be surprising that physicians consider a priceless bit of knowledge about their specialty a "pearl". For the diagnostic radiologist, a pearl may be the formerly elusive insight or fact that paves the way for a correct diagnosis or deeper understanding of a radiologic image. A traditional component of radiology education, pearls are considered on a par with elements such as the teaching file or lecture series. Pearls have also been a mainstay of www.CTISUS.com, where we post approximately 150 to 300 new pearls each month. In this app, we present pearls across 29 of the most popular categories derived from the literature or our imaging experiences. The app also provides a search feature to enhance user interactivity. We look forward to sharing these new insights with you on the latest version where we present literally thousands of pearls.

Screenshots

Radiology Toolbox Lite4 screens
CTisus iPearls4 screens

Verdict

The call

The clearest difference is review sentiment: CTisus iPearls at 100% against Radiology Toolbox Lite's 43%. CTisus iPearls also leads on rating (4.7 vs 2.3) and in-app purchases (none vs 1). Radiology Toolbox Lite's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads and device support 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. Radiology Toolbox Lite sells 1 one-off in-app purchase. CTisus iPearls asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CTisus iPearls holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: CTisus iPearls has 42 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 43% of Radiology Toolbox Lite's written reviews are positive against 100% of CTisus iPearls's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 months. Both last shipped on November 1, 2026.

Scorecard6 real differences · 4 level
Radiology Toolbox Lite versus CTisus iPearls: the parameters behind the verdict, then further details
ParameterRadiology Toolbox LiteCTisus iPearls
PriceFreeFree
Rating2.3 (3 ratings)4.7 (42 ratings) — better
Positive reviews42.9% of reviews100.0% of reviews — better
Number of ratings342 — better
Update frequencyEvery 6 monthsEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size27 MB137 MB
Age rating17+17+
DeveloperSoftcode Systems, Inc.Elliot Fishman

Customer experience

Radiology Toolbox Lite

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews14 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

CTisus iPearls

All ratings39 ratings
Positive92.3%
Neutral0.0%
Negative7.7%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Radiology Toolbox Lite

One-time1
  • Radiology Toolbox Upgrade to All Pro FeaturesFree
None

CTisus iPearls

No in-app purchases

Questions

Is Radiology Toolbox Lite free?
Radiology Toolbox Lite is free to download, with in-app purchases available.
Is CTisus iPearls free?
CTisus iPearls is free to download, with no in-app purchases.
Which has better reviews, Radiology Toolbox Lite or CTisus iPearls?
CTisus iPearls is rated higher. Radiology Toolbox Lite averages 2.3 out of 5 from 3 ratings, while CTisus iPearls averages 4.7 from 42 ratings.
Do Radiology Toolbox Lite or CTisus iPearls have ads?
Neither Radiology Toolbox Lite nor CTisus iPearls shows ads.
Which is updated more often, Radiology Toolbox Lite or CTisus iPearls?
Radiology Toolbox Lite ships an update every 6 months, and CTisus iPearls every 6 months. Most recently, Radiology Toolbox Lite was updated on November 1, 2026 and CTisus iPearls on November 1, 2026.

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