# R2 Docuo vs One Big Thing

The clearest difference is update cadence: R2 Docuo at every 9 days against One Big Thing's every 2 months. 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.

R2 Docuo ships an update every 9 days, One Big Thing every 2 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | R2 Docuo | One Big Thing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Size | 111 MB | 1 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [R2 Sistemas Informaticos S.L.](https://appshunter.io/developer/1207830089) | [Thomas Chatting](https://appshunter.io/developer/1811425476) |

## What reviewers say

### R2 Docuo

[App page](https://appshunter.io/ios/app/r2-docuo/id1207830090)

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

**In-app purchases:** none


### One Big Thing

[App page](https://appshunter.io/ios/app/one-big-thing/id6745229950)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is R2 Docuo free?

R2 Docuo is free to download, with no in-app purchases.

### Is One Big Thing free?

One Big Thing is free to download, with no in-app purchases.

### Do R2 Docuo or One Big Thing have ads?

Neither R2 Docuo nor One Big Thing shows ads.

### Which is updated more often, R2 Docuo or One Big Thing?

R2 Docuo ships an update every 9 days, and One Big Thing every 2 months. Most recently, R2 Docuo was updated on October 7, 2026 and One Big Thing on October 10, 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.*