# Fast Diary vs いやいや記録

The clearest difference is in-app purchases: いやいや記録 at none against Fast Diary's 1. いやいや記録 also leads on update cadence (every 2 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fast Diary sells 1 one-off in-app purchase. いやいや記録 asks for nothing beyond the download.

Fast Diary ships an update every 3 months, いやいや記録 every 2 days. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Fast Diary | いやいや記録 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Ad-supported |
| Size | 89 MB | 28 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Haruya Nakamura](https://appshunter.io/developer/1482524589) | [ryo mishima](https://appshunter.io/developer/1635107987) |

## What reviewers say

### Fast Diary

[App page](https://appshunter.io/ios/app/fast-diary/id1502008283)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad hiding option | $0.99 | one-time |


### いやいや記録

[App page](https://appshunter.io/ios/app/id6741118958)

This app helps parents navigate challenging toddler phases by providing tools to quickly record and analyze behavioral patterns. It offers guided breathing exercises and a review function to track progress and foster a stronger parent-child bond.

**Highlights:** Quick logging of tantrums, Guided breathing exercises, Pattern analysis with graphs, Mood tracking and review, Simple, intuitive interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast Diary free?

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

### Is いやいや記録 free?

いやいや記録 is free to download, with no in-app purchases.

### Do Fast Diary or いやいや記録 have ads?

Both Fast Diary and いやいや記録 show ads.

### Which is updated more often, Fast Diary or いやいや記録?

Fast Diary ships an update every 3 months, and いやいや記録 every 2 days. Most recently, Fast Diary was updated on October 27, 2026 and いやいや記録 on October 30, 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.*