# Booktrail vs Knowing Body

The clearest difference is update cadence: Booktrail at every 9 days against Knowing Body's every 5 weeks. Knowing Body's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Booktrail ships an update every 9 days, Knowing Body every 5 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Booktrail | Knowing Body |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/booktrail-book-tracker/id1604775921/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 weeks |
| Monetization | Free | — |
| Size | 28 MB | 63 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Defyner](https://appshunter.io/developer/1604775923) | [ZHIWEN YOU](https://appshunter.io/developer/1733993831) |

## What reviewers say

### Booktrail

[App page](https://appshunter.io/ios/app/booktrail-book-tracker/id1604775921)

Organize your personal library by tracking books you're reading, want to read, or have finished. Add books by scanning barcodes or searching by title/author, and monitor your reading progress. Create custom collections for better organization and discover new titles with synopses and reviews.

**Highlights:** Track reading status (reading, want to read, finished), Add books via barcode scan or search, Record reading progress and percentage, Create custom book collections, View book synopses and user reviews, Private, no account required

**Features:** Vision Pro support

**In-app purchases:** none


### Knowing Body

[App page](https://appshunter.io/ios/app/knowing-body/id6747706587)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Booktrail free?

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

### Is Knowing Body free?

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

### Do Booktrail or Knowing Body have ads?

Neither Booktrail nor Knowing Body shows ads.

### Which is updated more often, Booktrail or Knowing Body?

Booktrail ships an update every 9 days, and Knowing Body every 5 weeks. Most recently, Booktrail was updated on November 3, 2026 and Knowing Body on November 8, 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.*