Tide Charts vs Mareas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tide Charts
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.
- Worldwide tidal estimates
- Lunar data
- Weather forecast
- Current radar
- Offline predictions
- Favorite station management
- Apple Watch support
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Finally a beautiful and simple way to view tides on your mobile device! In addition to worldwide tidal estimates at tide stations, you can see the lunar data, weather forecast, and current radar making your next outdoor adventure as easy to plan as possible. By default, the application will pick the closest tide station to you, but picking a different tide or weather station is as easy as viewing a map of your current location. You can also setup and quickly switch between many stored favorite stations if you need to. No internet access while outdoors? No problem. This app has been designed to give you tidal and lunar predictions without internet access! Tides at a glance • A clear chart of the whole day, with the current height marked and daylight hours shaded (lunar rise and set is the small gray bar on the bottom) • The times and heights of every high and low tide • Swipe left or right to move through the days, or pick a date on the calendar • Swipe down to see sunrise, sunset, moonrise, moonset and the phase of the moon • Subscribe for tide alerts that notify you before a chosen high or low tide • Home Screen widgets with today's tides and the next tide Worldwide Tidal Stations • Nearly 8,000 stations, from the coasts of the United States and Canada to Europe, Japan, Korea, Taiwan, Southeast Asia, Australia, New Zealand, South America and the Pacific islands • Find the nearest station with one tap, search by name, or browse the map, with satellite imagery when you want it • Keep your favorites one tap away Adjustable Height to Match Your Local Tide Table • Heights use the datum your local charts and tables use: MLLW in the United States, chart datum in Canada, Japan and Korea, LAT in Europe and Australia, MLWS in Peru and Ecuador (or you can choose your own from Mean Sea Level, MLLW, MLW, MLWS or LAT) Weather and Radar • Weather forecast is included for the station's location, with wind, temp, precipitation, and the day's high and low • Animated rain radar with a scrubber, so you can see what is coming Apple Watch • A full-screen tide chart on Apple Watch: turn the Digital Crown to step through highs, lows, sunrise, sunset and moon times, or drag to scrub through the next 30 days • Complications for every watch face, from a tide gauge to a chart of the next 24 hours, in the color you choose • Your favorite and nearby stations, with the current height and the next tide Tides is free with ads, however we do offer a one-time purchase to remove them if you would rather a clean distraction free experience.
Mareas
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.
- 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
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Mareas es una aplicación que te permite consultar rápidamente las mareas en cualquiera de los puertos españoles. Rápidamente podrás consultar el estado de la marea (subiendo / bajando), la altura actual, e información sobre los coeficientes, próximas pleamar y bajamar. La aplicación funciona de forma offline, por lo que no necesitarás conexión a internet en ningún momento. Mareas ofrece widgets para la pantalla de inicio y la pantalla de bloqueo para que puedas consultar en todo momento el estado de la marea sin necesidad de abrir la aplicación, así como una versión para Apple Watch. También podrás consultar a Siri el estado y altura de la marea y te dará la respuesta. ** Los datos de la aplicación son los proporcionados de forma pública por el Instituto Hidrográfico de la Marina, publicados en el Anuario de Mareas del año en curso. **
Screenshots
Verdict
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 (#27 vs unranked). On price, review sentiment, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Tide Charts | Mareas |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (113K ratings) — better | — |
| Positive reviews | 68.5% of reviews | 71.4% of reviews — better |
| Number of ratings | 113K — better | — |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #27 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 104 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | 7th Gear | Ruben Fernandez |
Customer experience
Tide Charts
Mareas
Bugs and requests
Tide Charts
Reported bugs
4 issues- Tide data off by several hours
- Tide graph not displaying correctly
- App crashing on ad dismissal
- Apple Watch complications freezing
Requested features
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tide Charts
- Remove Ads$1.99
Mareas
No in-app purchases









