# UniBook vs PdfSpeaks

The clearest difference is update cadence: PdfSpeaks at weekly against UniBook's every 3 weeks. PdfSpeaks also leads on iOS requirement (15.0 vs 26.0). UniBook's advantage is device support. On price and in-app purchases there is nothing between them.

Both are free to download. UniBook sells 1 one-off in-app purchase and PdfSpeaks sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

UniBook ships an update every 3 weeks, PdfSpeaks weekly. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | UniBook | PdfSpeaks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 15 MB | 74 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | +4 | 4+ |
| Developer | [Denis Tronin](https://appshunter.io/developer/1446210844) | [Sintesy](https://appshunter.io/developer/1867295138) |

## What reviewers say

### UniBook

[App page](https://appshunter.io/ios/app/unibook-read-without-limits/id6757717595)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UniBook Premium | $49.99 | one-time |


### PdfSpeaks

[App page](https://appshunter.io/ios/app/pdfspeaks/id6768070704)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PdfSpeaks Monthly Plan | $14.99 | per month |
| PdfSpeaks 6-Month Plan | $49.99 | per 6 months |


## Frequently asked questions

### Is UniBook free?

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

### Is PdfSpeaks free?

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

### Which is updated more often, UniBook or PdfSpeaks?

UniBook ships an update every 3 weeks, and PdfSpeaks weekly. Most recently, UniBook was updated on September 9, 2026 and PdfSpeaks on September 12, 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.*