# UniReader vs Satz

The clearest difference is ads: UniReader at none against Satz's shown. Satz's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. UniReader sells 3 in-app purchases, starting at $1.99 per month and Satz sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UniReader ships an update every 3 weeks, Satz every 4 days. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | UniReader | Satz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 19 MB | 74 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guglielmo Pasa](https://appshunter.io/developer/417854438) | [Toprak KOC](https://appshunter.io/developer/1878087163) |

## What reviewers say

### UniReader

[App page](https://appshunter.io/ios/app/unireader-multi-format-reader/id6759504986)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UniReader Premium Monthly | $1.99 | per month |
| UniReader Premium Yearly | $19.99 | per year |
| UniReader Premium Lifetime | $34.99 | one-time |


### Satz

[App page](https://appshunter.io/ios/app/satz-ai-book-tracker/id6761371678)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Satz Premium Monthly | $5.99 | per month |
| Satz Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is UniReader free?

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

### Is Satz free?

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

### Do UniReader or Satz have ads?

Satz shows ads; UniReader does not.

### Which is updated more often, UniReader or Satz?

UniReader ships an update every 3 weeks, and Satz every 4 days. Most recently, UniReader was updated on October 11, 2026 and Satz on October 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.*