# もくもく vs Rera

The clearest difference is in-app purchases: Rera at none against もくもく's 6. もくもく's advantage is update cadence (every 3 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. もくもく sells 6 in-app purchases, starting at $1.99 per month. Rera asks for nothing beyond the download.

もくもく ships an update every 3 days, Rera every 5 months. Both last shipped on November 10, 2026.

## The numbers

| Metric | もくもく | Rera |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 months |
| Monetization | Freemium | — |
| Size | 107 MB | 9 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) | [Daisaku Seto](https://appshunter.io/developer/1889853807) |

## What reviewers say

### もくもく

[App page](https://appshunter.io/ios/app/id1487377681)

Track your reading expenses like a bank statement. This app helps you visualize how much you spend on books, turning your purchases into a personal investment. Features include barcode scanning for quick entry, wishlists, and detailed reading statistics.

**Highlights:** Barcode scanning for book entry, Track reading expenses, Wishlist management, Reading statistics and graphs, Page-specific reading notes, Data import from other apps, Social sharing of reading progress

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Super Mokumoku Plan (Monthly) | $1.99 | per month |
| Super Mokumoku Plan (Yearly) | $14.99 | per year |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |
| Super Mokumoku Plan (Lifetime) | $59.99 | one-time |


### Rera

[App page](https://appshunter.io/ios/app/rera-reading-journal/id6775810849)

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

**In-app purchases:** none


## Frequently asked questions

### Is もくもく free?

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

### Is Rera free?

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

### Do もくもく or Rera have ads?

Neither もくもく nor Rera shows ads.

### Which is updated more often, もくもく or Rera?

もくもく ships an update every 3 days, and Rera every 5 months. Most recently, もくもく was updated on November 10, 2026 and Rera on November 10, 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.*