# AmoMaster vs こいびと日記

The clearest difference is in-app purchases: AmoMaster at none against こいびと日記's 2. AmoMaster also leads on update cadence (weekly vs fortnightly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. こいびと日記 sells 2 in-app purchases, starting at $1.99 per 7 days. AmoMaster asks for nothing beyond the download.

AmoMaster ships an update weekly, こいびと日記 fortnightly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | AmoMaster | こいびと日記 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 9 MB | 23 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [riku Ito](https://appshunter.io/developer/1871626594) | [Starcrown Inc](https://appshunter.io/developer/1082624152) |

## What reviewers say

### AmoMaster

[App page](https://appshunter.io/ios/app/amomaster-partner-happiness/id6758228399)

**Features:** macOS Compatibility

**In-app purchases:** none


### こいびと日記

[App page](https://appshunter.io/ios/app/365/id6764788921)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Yearly Pro | $29.99 | per year |


## Frequently asked questions

### Is AmoMaster free?

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

### Is こいびと日記 free?

こいびと日記 is free to download, with in-app purchases available.

### Do AmoMaster or こいびと日記 have ads?

Neither AmoMaster nor こいびと日記 shows ads.

### Which is updated more often, AmoMaster or こいびと日記?

AmoMaster ships an update weekly, and こいびと日記 fortnightly. Most recently, AmoMaster was updated on October 6, 2026 and こいびと日記 on October 17, 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.*