# CANTAB Mobile vs OCS

The clearest difference is device support: OCS at 3 against CANTAB Mobile's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 12 months. The most recent releases landed on June 5, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CANTAB Mobile | OCS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | Every 12 months |
| Monetization | Free | — |
| Size | 105 MB | 138 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Cambridge Cognition Limited](https://appshunter.io/developer/496596292) | [University of Oxford](https://appshunter.io/developer/688778837) |

## What reviewers say

### CANTAB Mobile

[App page](https://appshunter.io/ios/app/cantab-mobile/id496596289)

This medical device software provides access to a specialized episodic memory test. It is intended for use by healthcare professionals within participating organizations. Access requires valid administrator credentials.

**Highlights:** Episodic memory test, Healthcare organization use, Administrator credential access, Results viewing, Test administration

**In-app purchases:** none


### OCS

[App page](https://appshunter.io/ios/app/ocs-plus/id1514766032)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CANTAB Mobile free?

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

### Is OCS free?

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

### Do CANTAB Mobile or OCS have ads?

Neither CANTAB Mobile nor OCS shows ads.

### Which is updated more often, CANTAB Mobile or OCS?

CANTAB Mobile ships an update every 12 months, and OCS every 12 months. Most recently, CANTAB Mobile was updated on June 5, 2026 and OCS on September 18, 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.*