# 月と太陽のカレンダー vs TideFish

The clearest difference is ads: 月と太陽のカレンダー at none against TideFish's shown. TideFish's advantage is update cadence (fortnightly vs monthly) and iOS requirement (17.6 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

月と太陽のカレンダー ships an update monthly, TideFish fortnightly. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 月と太陽のカレンダー | TideFish |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Size | 5 MB | 6 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mishima Design](https://appshunter.io/developer/373060551) | [Osamu Ishigami](https://appshunter.io/developer/901265058) |

## What reviewers say

### 月と太陽のカレンダー

[App page](https://appshunter.io/ios/app/id6760653202)

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

**In-app purchases:** none


### TideFish

[App page](https://appshunter.io/ios/app/tidefish/id6789813654)

**In-app purchases:** none


## Frequently asked questions

### Is 月と太陽のカレンダー free?

月と太陽のカレンダー is free to download, with no in-app purchases.

### Is TideFish free?

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

### Do 月と太陽のカレンダー or TideFish have ads?

TideFish shows ads; 月と太陽のカレンダー does not.

### Which is updated more often, 月と太陽のカレンダー or TideFish?

月と太陽のカレンダー ships an update monthly, and TideFish fortnightly. Most recently, 月と太陽のカレンダー was updated on September 20, 2026 and TideFish on September 19, 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.*