# NDP公式アプリ vs Chum

The clearest difference is in-app purchases: Chum at none against NDP公式アプリ's 8. NDP公式アプリ's advantage is iOS requirement (15.0 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NDP公式アプリ sells 8 one-off in-app purchases. Chum asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | NDP公式アプリ | Chum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 139 MB | 20 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Utoniq, Inc.](https://appshunter.io/developer/1448467038) | [Kota Sakurai](https://appshunter.io/developer/1523595704) |

## What reviewers say

### NDP公式アプリ

[App page](https://appshunter.io/ios/app/ndp/id6448327656)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 points | $0.49 | one-time |
| 500 points | $2.99 | one-time |
| 700 points | $3.99 | one-time |
| 1200ポイント | $6.99 | one-time |
| 3000ポイント | $19.99 | one-time |
| 4000 points | $24.99 | one-time |
| 7000 points | $39.99 | one-time |
| 10000 points | $59.99 | one-time |


### Chum

[App page](https://appshunter.io/ios/app/chum/id6748934376)

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

**In-app purchases:** none


## Frequently asked questions

### Is NDP公式アプリ free?

NDP公式アプリ is free to download, with in-app purchases available.

### Is Chum free?

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

### Do NDP公式アプリ or Chum have ads?

Neither NDP公式アプリ nor Chum shows ads.

### Which is updated more often, NDP公式アプリ or Chum?

NDP公式アプリ ships an update every 2 months, and Chum every 2 months. Most recently, NDP公式アプリ was updated on September 24, 2026 and Chum on October 12, 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.*