# Bookshelf+ vs ShelfMark

Bookshelf+ and ShelfMark are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Bookshelf+ sells 1 one-off in-app purchase 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. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Bookshelf+ | ShelfMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 13 MB | 6 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Bart Beemsterboer](https://appshunter.io/developer/1778540395) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Bookshelf+

[App page](https://appshunter.io/ios/app/bookshelf-plus/id6749479115)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bookshelf+ | $2.99 | one-time |


### 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 | $12.99 | one-time |


## Frequently asked questions

### Is Bookshelf+ free?

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

### Is ShelfMark free?

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

### Do Bookshelf+ or ShelfMark have ads?

Neither Bookshelf+ nor ShelfMark shows ads.

### Which is updated more often, Bookshelf+ or ShelfMark?

Bookshelf+ ships an update weekly, and ShelfMark weekly. Most recently, Bookshelf+ was updated on October 2, 2026 and ShelfMark on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*