# Book Tracker・Reading Log vs KRIZ

The clearest difference is in-app purchases: KRIZ at none against Book Tracker・Reading Log's 2. KRIZ also leads on ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Book Tracker・Reading Log sells 2 in-app purchases, starting at $4.99 per 7 days. KRIZ asks for nothing beyond the download.

Book Tracker・Reading Log ships an update every 4 months, KRIZ fortnightly. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Book Tracker・Reading Log | KRIZ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 106 MB | 46 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZeroPlay Ltd.](https://appshunter.io/developer/1500119722) | [Kateryna Dimitrashko](https://appshunter.io/developer/6797778450) |

## What reviewers say

### Book Tracker・Reading Log

[App page](https://appshunter.io/ios/app/book-trackerreading-log/id6763587726)

Easily build and manage your personal library by adding books via search, ISBN scan, or manual entry. Track reading progress, set goals, and record notes. Enjoy a private reading experience with data stored locally.

**Highlights:** Build personal library, Add books by title, author, ISBN, or manual entry, Track reading status (Want to Read, Reading, Read, Did Not Finish), Record ratings and notes, Set yearly reading goals, Built-in reading timer, Private, local data storage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Monthly Pro | $14.99 | per month |


### KRIZ

[App page](https://appshunter.io/ios/app/kriz-reading-diary/id6797778448)

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

**In-app purchases:** none


## Frequently asked questions

### Is Book Tracker・Reading Log free?

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

### Is KRIZ free?

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

### Do Book Tracker・Reading Log or KRIZ have ads?

Book Tracker・Reading Log shows ads; KRIZ does not.

### Which is updated more often, Book Tracker・Reading Log or KRIZ?

Book Tracker・Reading Log ships an update every 4 months, and KRIZ fortnightly. Most recently, Book Tracker・Reading Log was updated on October 8, 2026 and KRIZ on October 4, 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.*