# Tide Charts vs Mareas

The clearest difference is in-app purchases: Mareas at none against Tide Charts's 1. Mareas also leads on ads (none vs shown). Tide Charts's advantage is update cadence (every 3 weeks vs every 3 months) and chart position (#26 vs unranked). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Tide Charts sells 1 one-off in-app purchase. Mareas asks for nothing beyond the download.

Tide Charts ships an update every 3 weeks, Mareas every 3 months. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Tide Charts | Mareas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (113K ratings)](https://appshunter.io/ios/app/tide-charts/id957143504/reviews)** | — |
| Number of ratings | **113K** | — |
| Positive reviews | 68.5% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#26** | — |
| Size | 104 MB | 56 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [7th Gear](https://appshunter.io/developer/321178305) | [Ruben Fernandez](https://appshunter.io/developer/1013021034) |

## What reviewers say

### Tide Charts

[App page](https://appshunter.io/ios/app/tide-charts/id957143504)

**Currently charting:** #26 Top Free · Weather (US App Store)

Access worldwide tidal estimates, lunar data, and weather forecasts. Plan outdoor adventures with ease using current radar and offline predictions. Supports Apple Watch and includes a Today Extension for quick access.

**Highlights:** Worldwide tidal estimates, Lunar data, Weather forecast, Current radar, Offline predictions, Favorite station management, Apple Watch support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Clear tide information
- 👍 Useful for planning activities
- 💡 Comprehensive data including weather and moon phases
- 🤖 Accurate and reliable
- 🌟 Great app for Apple Watch

**What reviewers complain about**

- 🐛 Inaccurate tide data in some locations
- 🙈 Intrusive and unskippable ads
- 🤯 Ads crashing the app
- 🤔 Confusing UI and navigation
- 🤖 Unreliable Apple Watch complications

**Reported bugs**

- Tide data off by several hours
- Tide graph not displaying correctly
- App crashing on ad dismissal
- Apple Watch complications freezing

**Requested features**

- Ability to set custom locations
- Improved accuracy and data sources
- Option to purchase ad-free version
- Landscape mode support
- More detailed tide height information


### Mareas

[App page](https://appshunter.io/ios/app/mareas/id1522201767)

Access tide information for Spanish ports offline. View tide status, current height, and upcoming high/low tides. Includes home screen widgets and Apple Watch support.

**Highlights:** Offline tide data for Spanish ports, Current tide status (rising/falling), Tide height and coefficients, Upcoming high and low tides, Home screen and lock screen widgets, Apple Watch companion app, Siri integration for tide queries

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

**In-app purchases:** none


## Frequently asked questions

### Is Tide Charts free?

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

### Is Mareas free?

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

### Do Tide Charts or Mareas have ads?

Tide Charts shows ads; Mareas does not.

### Which is updated more often, Tide Charts or Mareas?

Tide Charts ships an update every 3 weeks, and Mareas every 3 months. Most recently, Tide Charts was updated on October 19, 2026 and Mareas on October 17, 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.*