# Book Tracker & Log vs Marcus

The clearest difference is update cadence: Book Tracker & Log at every 2 weeks against Marcus's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Book Tracker & Log sells 3 in-app purchases, starting at $0.99 per month and Marcus sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Book Tracker & Log ships an update every 2 weeks, Marcus every 2 months. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Book Tracker & Log | Marcus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/book-tracker-and-log-readshelf/id6780907685/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Freemium | — |
| Size | 26 MB | 65 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cengiz Darian Hanci](https://appshunter.io/developer/1878103848) | [Vukasin Rancic](https://appshunter.io/developer/1886442082) |

## What reviewers say

### Book Tracker & Log

[App page](https://appshunter.io/ios/app/book-tracker-and-log-readshelf/id6780907685)

This app helps you read more and understand your reading habits through private tracking. Log books, time your sessions, rate and review your reads, and discover new titles. It offers personalized recommendations and motivational features like streaks and challenges.

**Highlights:** Private reading journal, Track reading sessions with timer, Rate and review books, Personalized book recommendations, Reading habit motivation, Home Screen and Lock Screen widgets, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadShelf Premium Monthly | $0.99 | per month |
| ReadShelf Premium Yearly | $9.99 | per year |
| ReadShelf Premium Lifetime | $27.99 | one-time |


### Marcus

[App page](https://appshunter.io/ios/app/marcus-book-and-reading-tracker/id6792703147)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marcus Pro Monthly | $6.99 | per month |
| Marcus Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Book Tracker & Log free?

Book Tracker & Log is free to download, with in-app purchases available.

### Is Marcus free?

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

### Do Book Tracker & Log or Marcus have ads?

Neither Book Tracker & Log nor Marcus shows ads.

### Which is updated more often, Book Tracker & Log or Marcus?

Book Tracker & Log ships an update every 2 weeks, and Marcus every 2 months. Most recently, Book Tracker & Log was updated on October 25, 2026 and Marcus on October 9, 2026.

---

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