# Coaster - coast watcher

> Coaster - coast watcher (iPhone/iPad app by Michael Mathieu.)

- Source: https://appshunter.io/ios/app/coaster-coast-watcher/id6642650729 (this page in markdown: same URL + `.md`)
- Developer: [Michael Mathieu](https://appshunter.io/developer/1451289797)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 19 MB
- Languages: American English
- Released: 2024-09-03
- Data updated: 2026-07-20
- User reviews in markdown: https://appshunter.io/ios/app/coaster-coast-watcher/id6642650729/reviews.md

## What is Coaster?

Boat dashboard: speed, distance from the coast and nearest border.
Once the map has been downloaded, the application is functional offline.

A Premium yearly subscription is available. With Premium subscription, you have maps in HD-High Definition (an example is available on https://swissopt.ch/coaster/#hd), no ads to activate options alert and distance to nearest border.

Terms of Use (EULA) apply (https://swissopt.ch/coaster/support/terms_conditions.html).

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium | $4.99 | per year |



## Version history (last 5 releases)

### 2.2.0 — 2026-07-12

Technical update.

### 2.1.0 — 2025-12-05

Technical migration to Framework7 v9.0.1

### 2.0.11 — 2025-04-30

Technical update.

### 2.0.9 — 2024-12-16

New flag for Syria.

### 2.0.6 — 2024-12-02

Addition of a premium feature: distance to the border.

## Apps similar to Coaster

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [EkyNavy - Sailing Logbook](https://appshunter.io/ios/app/ekynavy-sailing-logbook/id6754830308) | — | Free | Navigation |
| [Boatpark](https://appshunter.io/ios/app/boatpark/id1466777753) | — | Free | Navigation |
| [ProSkipper](https://appshunter.io/ios/app/proskipper/id6476200710) | — | Free | Navigation |
| [HUD Speed Speedometer GPS](https://appshunter.io/ios/app/hud-speed-speedometer-gps/id6746767669) | 5.0 (1) | Free | Navigation |
| [CH16](https://appshunter.io/ios/app/ch16/id6761360179) | — | Free | Navigation |
| [WilhelmSK](https://appshunter.io/ios/app/wilhelmsk/id1150499484) | 4.5 (28) | $19.99 | Navigation |

## More apps by Michael Mathieu

- [DetoxMe - analyze what you eat](https://appshunter.io/ios/app/detoxme-analyze-what-you-eat/id1451289798)
- [GoodPipe](https://appshunter.io/ios/app/goodpipe/id6474254294)
- [GymTonic - connected to gyms](https://appshunter.io/ios/app/gymtonic-connected-to-gyms/id6480111009)
- [LoyApp](https://appshunter.io/ios/app/loyapp/id6746721442)
- [ParkSonar](https://appshunter.io/ios/app/parksonar/id6746721648)

All apps by Michael Mathieu: https://appshunter.io/developer/1451289797

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-20.*