# Readstock vs ZattaMemo

The clearest difference is in-app purchases: Readstock at none against ZattaMemo's 1. Readstock also leads on iOS requirement (15.1 vs 17.0). ZattaMemo's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ZattaMemo sells 1 one-off in-app purchase. Readstock asks for nothing beyond the download.

## The numbers

| Metric | Readstock | ZattaMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 weeks |
| Size | 32 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [taishiro honda](https://appshunter.io/developer/1865206749) | [Tatsuyoshi Sasaki](https://appshunter.io/developer/1888368184) |

## What reviewers say

### Readstock

[App page](https://appshunter.io/ios/app/readstock-article-manager/id6759557251)

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

**In-app purchases:** none


### ZattaMemo

[App page](https://appshunter.io/ios/app/zattamemo/id6761243555)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZattaMemo Upgrade | $3.99 | one-time |


## Frequently asked questions

### Is Readstock free?

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

### Is ZattaMemo free?

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

### Do Readstock or ZattaMemo have ads?

Readstock shows ads; ZattaMemo does not.

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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.*