# PaperUno vs ReadSlow

The clearest difference is in-app purchases: PaperUno at none against ReadSlow's 2. PaperUno also leads on device support (3 vs 1) and iOS requirement (15.6 vs 26.0). ReadSlow's advantage is update cadence (every 3 days vs every 10 days). On price and ads there is nothing between them.

Both are free to download. ReadSlow sells 2 in-app purchases, starting at $2.99 per month. PaperUno asks for nothing beyond the download.

PaperUno ships an update every 10 days, ReadSlow every 3 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PaperUno | ReadSlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 78 MB | 6 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [炯炯 胡](https://appshunter.io/developer/1774315636) | [炜东 黄](https://appshunter.io/developer/1651122567) |

## What reviewers say

### PaperUno

[App page](https://appshunter.io/ios/app/paperuno-grid-and-graph-maker/id6784046887)

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

**In-app purchases:** none


### ReadSlow

[App page](https://appshunter.io/ios/app/readslow-bilingual-reading/id6793834356)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is PaperUno free?

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

### Is ReadSlow free?

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

### Do PaperUno or ReadSlow have ads?

Neither PaperUno nor ReadSlow shows ads.

### Which is updated more often, PaperUno or ReadSlow?

PaperUno ships an update every 10 days, and ReadSlow every 3 days. Most recently, PaperUno was updated on October 6, 2026 and ReadSlow on October 7, 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.*