decimal3D vs CT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 3D patient treatment area capture
- Digitize and design electron apertures
- One-click ordering for custom devices
- FDA cleared medical software
- Streamlined radiation therapy workflow
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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
CT
This app provides a didactic and effective way for students, radiologists, and bio-image graduates to learn and reinforce their knowledge of computed tomography protocols. It features a human body model with selectable protocols, detailing essential information for each study.
- Human body model for protocol selection
- Detailed protocol information
- Indications and preparation guidance
- Scout view and FOV details
- Cut thickness and gap information
- Window settings and reconstruction plans
- Protocol-specific images
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CT - Computed Tomography is an app that was created for all students, radiologists and Graduates in Bio-Image production who wish to learn or reinforce their knowledge in a simple way. Within the app you will find a human body where you can select different protocols and learn in a didactic and effective way. In each section of the human body you will find the information necessary to carry out your computed tomography study: - Indications - Previous preparation - Scout view - Fov - Cut thickness and gap - Windows - Reconstruction plans, etc. Also in each protocol you find different images. Wouldn't you like to always have a help for your studies at hand and be able to reinforce your knowledge? Download CT - Computed Tomography for FREE! All information provided in this app is to support the study, nothing should be taken as a medical recommendation of any kind. If you have any questions, consult your trusted doctor.
Screenshots
Verdict
The clearest difference is rating: decimal3D at 5.0 against CT's 4.5. decimal3D also leads on ads (none vs shown) and update cadence (every 2 months vs every 12 months). CT's advantage is ratings volume (12 vs 3) and device support (3 vs 1). On price 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
decimal3D holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 3 and 12 respectively.
decimal3D ships an update every 2 months, CT every 12 months. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.
| Parameter | decimal3D | CT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.5 (12 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 | 12 — better |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 55 MB |
| Age rating | 17+ | 12+ |
| Developer | .decimal, LLC | Fabricio Tarter |
Customer experience
decimal3D
CT
In-app purchases
decimal3D
No in-app purchases
CT
No in-app purchases
