# TuMarea vs Merestone

The clearest difference is in-app purchases: TuMarea at none against Merestone's 10. TuMarea also leads on iOS requirement (12.0 vs 17.0). Merestone's advantage is update cadence (every 3 days vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Merestone sells 10 one-off in-app purchases. TuMarea asks for nothing beyond the download.

TuMarea ships an update every 7 months, Merestone every 3 days. Both last shipped on November 1, 2026.

## The numbers

| Metric | TuMarea | Merestone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tumarea/id586907423/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 52.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 2 MB | 204 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [LUIS GONZALEZ](https://appshunter.io/developer/586907426) | [LEON NELIO FIGUEIRA](https://appshunter.io/developer/6790868683) |

## What reviewers say

### TuMarea

[App page](https://appshunter.io/ios/app/tumarea/id586907423)

Access tide tables for 69 Spanish ports and Lisbon. View current tide status, heights, and speed, plus 30-day forecasts including moon phases. All data is offline and uses official, real-time hours.

**Highlights:** Tide tables for 69 Spanish ports and Lisbon, Current tide status (rising/falling), Tide heights and speed, 30-day tide forecasts, Moon phase information, Official, real-time tide hours, Offline data access

**Features:** macOS Compatibility

**In-app purchases:** none


### Merestone

[App page](https://appshunter.io/ios/app/merestone-protected-areas/id6801830675)

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Merestone Pro East Asia | $11.99 | one-time |
| Merestone Pro IT+SI+MT | $12.99 | one-time |
| Merestone Pro Brazil | $14.99 | one-time |
| Merestone Pro North America | $14.99 | one-time |
| Merestone Pro Malta | $17.99 | one-time |
| Merestone Pro Mexico | $19.99 | one-time |
| Merestone Pro East Asia | $19.99 | one-time |
| Merestone Pro Hong Kong | $24.99 | one-time |
| Merestone Pro Japan | $29.99 | one-time |
| Merestone Pro East Asia | $39.99 | one-time |


## Frequently asked questions

### Is TuMarea free?

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

### Is Merestone free?

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

### Do TuMarea or Merestone have ads?

Neither TuMarea nor Merestone shows ads.

### Which is updated more often, TuMarea or Merestone?

TuMarea ships an update every 7 months, and Merestone every 3 days. Most recently, TuMarea was updated on November 1, 2026 and Merestone on November 1, 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.*