# Biblioteca Digital CBR vs CT

The clearest difference is ads: Biblioteca Digital CBR at none against CT's shown. Biblioteca Digital CBR also leads on update cadence (every 2 months vs every 12 months). CT's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

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

Biblioteca Digital CBR ships an update every 2 months, CT every 12 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Biblioteca Digital CBR | CT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (12 ratings)](https://appshunter.io/ios/app/ct-computed-tomography/id1562592280/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | — | Ad-supported |
| Size | 58 MB | 55 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Colégio Brasileiro de Radiologia e Diagnóstico por Imagem](https://appshunter.io/developer/1226501266) | [Fabricio Tarter](https://appshunter.io/developer/1533271635) |

## What reviewers say

### Biblioteca Digital CBR

[App page](https://appshunter.io/ios/app/biblioteca-digital-cbr/id1226501267)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### CT

[App page](https://appshunter.io/ios/app/ct-computed-tomography/id1562592280)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Biblioteca Digital CBR free?

Biblioteca Digital CBR is free to download, with no in-app purchases.

### Is CT free?

CT is free to download, with no in-app purchases.

### Do Biblioteca Digital CBR or CT have ads?

CT shows ads; Biblioteca Digital CBR does not.

### Which is updated more often, Biblioteca Digital CBR or CT?

Biblioteca Digital CBR ships an update every 2 months, and CT every 12 months. Most recently, Biblioteca Digital CBR was updated on October 4, 2026 and CT on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*