# Nubuki vs 空玉

The clearest difference is in-app purchases: 空玉 at none against Nubuki's 1. 空玉 also leads on update cadence (every 2 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Nubuki sells 1 one-off in-app purchase. 空玉 asks for nothing beyond the download.

Nubuki ships an update every 4 months, 空玉 every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Nubuki | 空玉 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 161 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kissylabs](https://appshunter.io/developer/1896778111) | [kiyotaka takanishi](https://appshunter.io/developer/6777109286) |

## What reviewers say

### Nubuki

[App page](https://appshunter.io/ios/app/nubuki/id6777028701)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all pets | $2.99 | one-time |


### 空玉

[App page](https://appshunter.io/ios/app/id6788443049)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nubuki free?

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

### Is 空玉 free?

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

### Do Nubuki or 空玉 have ads?

Neither Nubuki nor 空玉 shows ads.

### Which is updated more often, Nubuki or 空玉?

Nubuki ships an update every 4 months, and 空玉 every 2 days. Most recently, Nubuki was updated on October 25, 2026 and 空玉 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.*