# Co Translation vs PDF Reader

The clearest difference is update cadence: PDF Reader at every 5 days against Co Translation's every 2 weeks. Co Translation's advantage is iOS requirement (13.0 vs 15.0). 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.

Co Translation ships an update every 2 weeks, PDF Reader every 5 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Co Translation | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 111 MB | 84 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZFZB](https://appshunter.io/developer/1736906632) | [Appwords](https://appshunter.io/developer/1766020257) |

## What reviewers say

### Co Translation

[App page](https://appshunter.io/ios/app/co-translation/id6754668873)

Break down language barriers with this free translation app. It offers text, voice, and image translation, along with a history feature to manage past translations. An interactive guide helps new users get started.

**Highlights:** Text translation, Voice translation, Image translation, Translation history, Interactive newbie guide

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

**In-app purchases:** none


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-viewer-and-scanner/id6757069184)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Co Translation free?

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

### Is PDF Reader free?

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

### Do Co Translation or PDF Reader have ads?

Neither Co Translation nor PDF Reader shows ads.

### Which is updated more often, Co Translation or PDF Reader?

Co Translation ships an update every 2 weeks, and PDF Reader every 5 days. Most recently, Co Translation was updated on October 30, 2026 and PDF Reader on October 28, 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.*