# Readistry vs ShelfMark

The clearest difference is iOS requirement: Readistry at 15.1 against ShelfMark's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Readistry sells 2 in-app purchases, starting at $2.99 per month and ShelfMark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Readistry | ShelfMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 50 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DJUMP, MB](https://appshunter.io/developer/1861303154) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Readistry

[App page](https://appshunter.io/ios/app/readistry-bookshelf-and-log/id6782301868)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Readistry Premium Monthly | $2.99 | per month |
| Readistry Premium Yearly | $19.99 | per year |


### ShelfMark

[App page](https://appshunter.io/ios/app/shelfmark-reading-tracker/id6788129809)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShelfMark Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Readistry free?

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

### Is ShelfMark free?

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

### Do Readistry or ShelfMark have ads?

Neither Readistry nor ShelfMark shows ads.

### Which is updated more often, Readistry or ShelfMark?

Readistry ships an update weekly, and ShelfMark weekly. Most recently, Readistry was updated on October 31, 2026 and ShelfMark on October 31, 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.*