# ShelfMark vs Iskander

The clearest difference is in-app purchases: Iskander at none against ShelfMark's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | ShelfMark | Iskander |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 6 MB | 4 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [InnovaLabWorks](https://appshunter.io/developer/1888514726) | [Pierre Muller](https://appshunter.io/developer/1239680807) |

## What reviewers say

### 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 |


### Iskander

[App page](https://appshunter.io/ios/app/iskander-pdf-reader-and-ai/id6805928856)

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

**In-app purchases:** none


## Frequently asked questions

### Is ShelfMark free?

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

### Is Iskander free?

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

### Do ShelfMark or Iskander have ads?

Neither ShelfMark nor Iskander shows ads.

---

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