# BookBound vs AeroBooks

The clearest difference is in-app purchases: BookBound at none against AeroBooks's 2. AeroBooks's advantage is update cadence (every 8 days vs every 4 months) and iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. AeroBooks sells 2 in-app purchases, starting at $1.99 per month. BookBound asks for nothing beyond the download.

BookBound ships an update every 4 months, AeroBooks every 8 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BookBound | AeroBooks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Size | 10 MB | 54 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Steve Scott](https://appshunter.io/developer/1090707150) | [Enzo Kaiser](https://appshunter.io/developer/1847367492) |

## What reviewers say

### BookBound

[App page](https://appshunter.io/ios/app/bookbound-reading-tracker/id6758109356)

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

**In-app purchases:** none


### AeroBooks

[App page](https://appshunter.io/ios/app/aerobooks/id6761075548)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AeroBooks Pro | $1.99 | per month |
| AeroBooks Pro | $17.99 | per year |


## Frequently asked questions

### Is BookBound free?

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

### Is AeroBooks free?

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

### Do BookBound or AeroBooks have ads?

Neither BookBound nor AeroBooks shows ads.

### Which is updated more often, BookBound or AeroBooks?

BookBound ships an update every 4 months, and AeroBooks every 8 days. Most recently, BookBound was updated on October 13, 2026 and AeroBooks 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.*