# AIUM vs Datata

The clearest difference is in-app purchases: AIUM at none against Datata's 1. Datata's advantage is update cadence (every 6 days vs every 2 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Datata sells 1 one-off in-app purchase. AIUM asks for nothing beyond the download.

AIUM ships an update every 2 months, Datata every 6 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | AIUM | Datata |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 2 MB | 29 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hitoshi Kanetani](https://appshunter.io/developer/1896509422) | [茜 赵](https://appshunter.io/developer/1896471528) |

## What reviewers say

### AIUM

[App page](https://appshunter.io/ios/app/aium/id6783911387)

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

**In-app purchases:** none


### Datata

[App page](https://appshunter.io/ios/app/datata/id6798297393)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Datata Pro | $2.99 | one-time |


## Frequently asked questions

### Is AIUM free?

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

### Is Datata free?

Datata is free to download, with in-app purchases available.

### Do AIUM or Datata have ads?

Neither AIUM nor Datata shows ads.

### Which is updated more often, AIUM or Datata?

AIUM ships an update every 2 months, and Datata every 6 days. Most recently, AIUM was updated on November 5, 2026 and Datata on November 6, 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.*