# ESAIC vs useit

The clearest difference is update cadence: ESAIC at weekly against useit's fortnightly. ESAIC also leads on iOS requirement (13.0 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.

ESAIC ships an update weekly, useit fortnightly. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ESAIC | useit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 110 MB | 61 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [European Society of Anaesthesiology](https://appshunter.io/developer/1380736857) | [Suresh Paranjothy](https://appshunter.io/developer/1587131308) |

## What reviewers say

### ESAIC

[App page](https://appshunter.io/ios/app/esaic/id6739699757)

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

**In-app purchases:** none


### useit

[App page](https://appshunter.io/ios/app/useit/id6747667589)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ESAIC free?

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

### Is useit free?

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

### Do ESAIC or useit have ads?

Neither ESAIC nor useit shows ads.

### Which is updated more often, ESAIC or useit?

ESAIC ships an update weekly, and useit fortnightly. Most recently, ESAIC was updated on September 17, 2026 and useit on September 30, 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.*