# Think Kidneys vs CEMBooks 2

The clearest difference is iOS requirement: Think Kidneys at 8.0 against CEMBooks 2's 15.1. 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.

Think Kidneys ships an update every 5 months, CEMBooks 2 every 3 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Think Kidneys | CEMBooks 2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 27 MB | 25 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [THE RENAL ASSOCIATION](https://appshunter.io/developer/1131570184) | [iED Limited](https://appshunter.io/developer/326615527) |

## What reviewers say

### Think Kidneys

[App page](https://appshunter.io/ios/app/think-kidneys/id1131570185)

This app offers quick access to information on detecting, managing, and treating Acute Kidney Injury (AKI). It mirrors the content of its website, making it convenient for healthcare professionals to use on the go or in clinical settings.

**Highlights:** AKI detection information, AKI management guidance, AKI treatment protocols, Mobile access to resources, Designed for healthcare professionals

**Features:** macOS Compatibility

**In-app purchases:** none


### CEMBooks 2

[App page](https://appshunter.io/ios/app/cembooks-2/id1571916400)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Think Kidneys free?

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

### Is CEMBooks 2 free?

CEMBooks 2 is free to download, with no in-app purchases.

### Do Think Kidneys or CEMBooks 2 have ads?

Neither Think Kidneys nor CEMBooks 2 shows ads.

### Which is updated more often, Think Kidneys or CEMBooks 2?

Think Kidneys ships an update every 5 months, and CEMBooks 2 every 3 months. Most recently, Think Kidneys was updated on October 14, 2026 and CEMBooks 2 on October 10, 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.*