iMar vs Seander
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMar
Access real-time and forecasted sea conditions across Spain. View detailed data on waves, sea level, wind, and temperature for various locations. Includes animated forecasts and an alert system for coastal conditions.
- Real-time sea state data
- Multi-day sea condition forecasts
- Detailed oleaje, level, wind, and temperature data
- Favorite location management
- Animated wind and wave forecasts
- Coastal alert system
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Puertos del Estado presenta iMar, su aplicación para dispositivos móviles que permite conocer el estado del mar, tanto en tiempo real como para los próximos días. Acceda a información detallada de oleaje, nivel del mar, viento, presión atmosférica, temperatura del agua, etc. para cada localidad, playa y puerto de España. La aplicación permite la creación y gestión de ubicaciones favoritas, facilitando así un acceso inmediato a la información. Adicionalmente, se proporcionan mapas animados de previsión de viento y oleaje, así como un completo sistema de alerta para la costa que permite evaluar el estado del mar en toda España de un solo vistazo. La información en tiempo real se actualiza al minuto para los mareógrafos, cada hora para las boyas y dos veces al día para los sistemas de previsión. Todos los datos provienen de los sistemas de medida y modelos de Puertos del Estado, a excepción de las salidas de los modelos numéricos de viento que son proporcionadas por AEMET.
Seander
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Seander helps you decide where to anchor and when to go, with a clear read of marine weather tailored to each anchorage — not just a generic forecast for the area. Check marine forecasts, explore Mediterranean anchorages, save your spots, and get a quick interpretation so you can sail with more judgement and confidence. What you can do with Seander: • View wind, swell and the day’s evolution, with a full forecast expandable from Home. • See each anchorage’s status (comfortable, fair or rough) based on wind, sea state and shelter protection. • Explore anchorages and harbours on the map, with detail sheets, comfort timeline and shelter rose. • Ask Seander Advisor in plain language: should I stay here?, where should I anchor?, how’s the weather evolving? • Save favourite locations and see top picks nearby when conditions allow. • Use the app in light or dark mode, built for daytime checks and night watches on board. Seander is built for skippers, crews and sailing enthusiasts who want useful, direct, actionable information — less noise, more judgement before you leave. Terms of use (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: iMar at none against Seander's 2. iMar also leads on iOS requirement (10.0 vs 15.0). Seander's advantage is update cadence (every 10 days vs every 10 months). On price, ads and device support 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. Seander sells 2 in-app purchases, starting at $3.99 per month. iMar asks for nothing beyond the download.
iMar ships an update every 10 months, Seander every 10 days. The most recent releases landed on September 15, 2026 and August 31, 2026 respectively.
| Parameter | iMar | Seander |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 29.4% of reviews | — |
| Update frequency | Every 10 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 151 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Puertos del Estado | Pau Bonet |
In-app purchases
iMar
No in-app purchases
Seander
- Seander Pro Monthly7 Days trial$3.991 Month
- Seander Pro Annual1 Year trial$17.991 Year









