# Histopia vs Unify

The clearest difference is in-app purchases: Histopia at none against Unify's 1. Histopia also leads on iOS requirement (12.4 vs 17.6). Unify's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Unify sells 1 in-app purchase, starting at $4.99 per month. Histopia asks for nothing beyond the download.

Histopia ships an update every 6 months, Unify every 5 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Histopia | Unify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 5 months** |
| Size | 54 MB | 1.4 GB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [Soysal Tan](https://appshunter.io/developer/1686126069) | [Kai Zhang](https://appshunter.io/developer/1867333562) |

## What reviewers say

### Histopia

[App page](https://appshunter.io/ios/app/histopia-chat/id6449364875)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unify

[App page](https://appshunter.io/ios/app/unify-ai-discovery/id6757502298)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Guardianship (Monthly) | $4.99 | per month |


## Frequently asked questions

### Is Histopia free?

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

### Is Unify free?

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

### Do Histopia or Unify have ads?

Histopia shows ads; Unify does not.

### Which is updated more often, Histopia or Unify?

Histopia ships an update every 6 months, and Unify every 5 months. Most recently, Histopia was updated on October 27, 2026 and Unify on October 24, 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.*