# Sunsync vs Tsukuyomi

The clearest difference is in-app purchases: Sunsync at none against Tsukuyomi's 6. Sunsync also leads on iOS requirement (15.6 vs 17.0). Tsukuyomi's advantage is update cadence (every 3 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Tsukuyomi sells 6 in-app purchases, starting at $0.99 per 7 days. Sunsync asks for nothing beyond the download.

Sunsync ships an update every 4 months, Tsukuyomi every 3 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Sunsync | Tsukuyomi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Size | 43 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Clusia LLC](https://appshunter.io/developer/1585054563) | [Starcrown Inc](https://appshunter.io/developer/1082624152) |

## What reviewers say

### Sunsync

[App page](https://appshunter.io/ios/app/sunsync/id6469003195)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tsukuyomi

[App page](https://appshunter.io/ios/app/tsukuyomi-moon-journal/id6762069190)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tsukuyomi Pro Weekly | $0.99 | per 7 days |
| Tsukuyomi Pro Monthly | $2.99 | per month |
| Tsukuyomi Pro Yearly | $17.99 | per year |
| Small Gift | $0.99 | one-time |
| Medium Gift | $1.99 | one-time |
| Generous Gift | $5.99 | one-time |


## Frequently asked questions

### Is Sunsync free?

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

### Is Tsukuyomi free?

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

### Do Sunsync or Tsukuyomi have ads?

Neither Sunsync nor Tsukuyomi shows ads.

### Which is updated more often, Sunsync or Tsukuyomi?

Sunsync ships an update every 4 months, and Tsukuyomi every 3 days. Most recently, Sunsync was updated on October 25, 2026 and Tsukuyomi on October 25, 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.*