# CASP vs FABULINUS

The clearest difference is update cadence: CASP at every 2 months against FABULINUS's every 5 months. CASP also leads on iOS requirement (7.0 vs 15.6). On price, ads, 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.

CASP ships an update every 2 months, FABULINUS every 5 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CASP | FABULINUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/casp/id961788886/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 2 MB | 133 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Luis Ruiz del Fresno](https://appshunter.io/developer/961788885) | [Hello Thread](https://appshunter.io/developer/996237890) |

## What reviewers say

### CASP

[App page](https://appshunter.io/ios/app/casp/id961788886)

Critically appraise medical literature using evidence-based templates. Includes a glossary, calculators for NNT and post-test probability, and the ability to save and share appraisals.

**Highlights:** Critical appraisal templates, Glossary of terms, NNT calculator, Post-Test Probability calculator, Save and share appraisals, PDF export

**Features:** macOS Compatibility

**In-app purchases:** none


### FABULINUS

[App page](https://appshunter.io/ios/app/fabulinus/id6471395459)

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

**In-app purchases:** none


## Frequently asked questions

### Is CASP free?

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

### Is FABULINUS free?

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

### Do CASP or FABULINUS have ads?

Neither CASP nor FABULINUS shows ads.

### Which is updated more often, CASP or FABULINUS?

CASP ships an update every 2 months, and FABULINUS every 5 months. Most recently, CASP was updated on October 5, 2026 and FABULINUS on October 7, 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.*