# マリンコンパス vs MapPiece

The clearest difference is in-app purchases: MapPiece at none against マリンコンパス's 3. MapPiece also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. マリンコンパス sells 3 in-app purchases, starting at $2.99 per month. MapPiece asks for nothing beyond the download.

マリンコンパス ships an update every 2 weeks, MapPiece every 4 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | マリンコンパス | MapPiece |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 94 MB | 20 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [INFCAM CORPORATION](https://appshunter.io/developer/1281922536) | [Masashi Aiuchi](https://appshunter.io/developer/1879737834) |

## What reviewers say

### マリンコンパス

[App page](https://appshunter.io/ios/app/id1467659960)

Share your sea voyage plans and real-time location with family, friends, or fellow boaters. Access marine information like coastal facilities and depth contours. Offers premium navigation features for enhanced safety and planning.

**Highlights:** Share voyage plans and location, Group sharing with family/friends, Marina and mooring facility network, Display marine information on map, Register departure/arrival reports, Premium navigation features

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| マリンコンパス フィッシャーマンズ版 | $2.99 | per month |
| マリンコンパス プロフェッショナル航海版 | $5.99 | per month |
| マリンコンパスプレミアム年額プラン | $34.99 | per year |


### MapPiece

[App page](https://appshunter.io/ios/app/mappiece/id6764195697)

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

**In-app purchases:** none


## Frequently asked questions

### Is マリンコンパス free?

マリンコンパス is free to download, with in-app purchases available.

### Is MapPiece free?

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

### Do マリンコンパス or MapPiece have ads?

Neither マリンコンパス nor MapPiece shows ads.

### Which is updated more often, マリンコンパス or MapPiece?

マリンコンパス ships an update every 2 weeks, and MapPiece every 4 days. Most recently, マリンコンパス was updated on October 15, 2026 and MapPiece on October 7, 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.*