Comparison

decimal3D vs CT Anatomy

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

Head to head
About

decimal3D

This medical software helps radiation therapy professionals design and order patient-specific devices for external beam radiation therapy. It captures 3D renderings of treatment areas and allows for quick digitization and design of electron apertures, with one-click ordering for next-day delivery.

Highlights
  • 3D patient treatment area capture
  • Digitize and design electron apertures
  • One-click ordering for custom devices
  • FDA cleared medical software
  • Streamlined radiation therapy workflow
Read full description

decimal3D is a medical software device that is cleared for use by the US FDA (510k #: K192554). It is used by radiation therapy professionals to design and order patient-specific devices for use in treating patients using external beam radiation therapy. This app requires customers to first contact .decimal in order to sign a Customer Agreement and establish user accounts for application access. Built for use with the Structure Sensor by Occipital. decimal3D is an iPad App that enables users to capture a 3D full color, dimensionally accurate rendering of any patient's treatment area. Our simple to use app then allows users to quickly digitize the shape of the physician drawn treatment area and design the required electron aperture. From this App, users can then access our one-click ordering for an electron aperture to be manufactured by our company and it will arrive the next day. decimal3D offers the following benefits to radiation oncology clinics: - Replaces the old clinical electron setup process with a high-tech, efficient solution - Decreases the number of steps in your workflow - Facilitates a better work environment by reducing stress on staff and patients - Provides less potential for accidents and errors - Decreases potential for delays that impact patient wait time and satisfaction For further information please visit: dotdecimal.com

About

CT Anatomy

This comprehensive CT anatomy atlas provides detailed cross-sectional views of the human body. Explore anatomical structures with interactive features like FollowMe™ and QuizMe™ modes. Available on Mac, iPhone, and iPad.

Highlights
  • Cross-sectional CT axial anatomy guide
  • FollowMe™ mode to trace anatomical structures
  • QuizMe™ mode for anatomy skill testing
  • Detailed descriptions for over 700 structures
  • Search and locate anatomical structures
  • English/Spanish and Latin nomenclature
  • MPR (coronal) reformats
Read full description

****************************************************** Best Radiology Mobile App 2015 by AuntMinnie.com ****************************************************** NOW Available for Mac as well! Anatomy of the BRAIN, NECK, THORAX (mediastinum AND lungs), HEART (Cardiac CT/coronary arteries), ABDOMEN, PELVIS (male AND female), LOWER and UPPER EXTREMITIES (Femur, Knee, Ankle, Shoulder, Elbow and Wrist). * MPR views (Coronal) of the Thorax, Abdomen and Pelvis (male) also available The most comprehensive CT Anatomy Atlas in the AppStore *** Recommended by the independent review site iMedicalApps.com: "CT Anatomy is a useful radiology app that helps educate the user on normal human anatomy seen on the CT. It is great for learning general anatomy or showing patients a normal CT scan for comparison. The app has a full body CT scan and uses color coded pins to label the anatomic structures." CT Anatomy is a cross-sectional CT axial anatomy guide. Simple, intuitive and beautiful interface. FEATURING: • FollowMe™ mode. Select and follow any anatomical structure throughout its course. • QuizMe™ mode. Test your anatomy skills. • AboutMe™: Detailed description for EVERY anatomical structure appearing in the app. • SearchMe™: Search and locate anatomical structures with ease. • English/Spanish and Latin nomenclature. • Color coded anatomical structures. • More than 550 CT views with anatomy. • More than 700 anatomical structures with detailed descriptions. • Advance one image at time or scroll with one finger • Use two fingers to pan • Use the pinch gesture to zoom in / out • MPR (coronal) reformats of the Thorax, Abdomen and Pelvis Great reference tool for students, doctors and medical professionals. Learn CT Anatomy on your Mac. *** Yearly Subscription *** • Unlock all Body Parts • Unlock Quiz Mode • Unlock Search Payment will be charged to iTunes Account at confirmation of purchase Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms and Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: www.mediware.cy/privacy

Screenshots

CT Anatomy4 screens

Verdict

The call

The clearest difference is rating: decimal3D at 5.0 against CT Anatomy's 4.5. decimal3D also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 22 months). CT Anatomy's advantage is ratings volume (126 vs 3) and device support (3 vs 1). On price and ads 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. CT Anatomy sells 1 in-app purchase, starting at $9.99 per year. decimal3D asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

decimal3D holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: CT Anatomy has 126 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

decimal3D ships an update every 2 months, CT Anatomy every 22 months. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
decimal3D versus CT Anatomy: the parameters behind the verdict, then further details
Parameterdecimal3DCT Anatomy
PriceFreeFree
Rating5.0 (3 ratings) — better4.5 (126 ratings)
Positive reviews—0.0% of reviews
Number of ratings3126 — better
Update frequencyEvery 2 months — betterEvery 22 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad, Mac — better
Requires iOS15.6 — better18.5
Further details — not scored
Size39 MB24 MB
Age rating17+17+
Developer.decimal, LLCMEDIWARE CY LTD

Customer experience

decimal3D

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

CT Anatomy

All ratings126 ratings
Positive88.1%
Neutral2.4%
Negative9.5%
Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

decimal3D

No in-app purchases

1 purchases

CT Anatomy

Subscriptions1
  • Yearly Subscription$9.991 Year

Questions

Is decimal3D free?
decimal3D is free to download, with no in-app purchases.
Is CT Anatomy free?
CT Anatomy is free to download, with in-app purchases available.
Which has better reviews, decimal3D or CT Anatomy?
decimal3D is rated higher. decimal3D averages 5.0 out of 5 from 3 ratings, while CT Anatomy averages 4.5 from 126 ratings.
Do decimal3D or CT Anatomy have ads?
Neither decimal3D nor CT Anatomy shows ads.
Which is updated more often, decimal3D or CT Anatomy?
decimal3D ships an update every 2 months, and CT Anatomy every 22 months. Most recently, decimal3D was updated on October 6, 2026 and CT Anatomy on October 11, 2026.

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