# iMar vs Proyecto Mastral

The clearest difference is update cadence: Proyecto Mastral at every 11 days against iMar's every 10 months. iMar's advantage is iOS requirement (10.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iMar ships an update every 10 months, Proyecto Mastral every 11 days. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | iMar | Proyecto Mastral |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 29.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 11 days** |
| Monetization | Free | — |
| Size | 151 MB | 30 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Puertos del Estado](https://appshunter.io/developer/1077674067) | [ICON Tech](https://appshunter.io/developer/1742812567) |

## What reviewers say

### iMar

[App page](https://appshunter.io/ios/app/imar/id545093470)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Proyecto Mastral

[App page](https://appshunter.io/ios/app/proyecto-mastral/id6453560246)

**In-app purchases:** none


## Frequently asked questions

### Is iMar free?

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

### Is Proyecto Mastral free?

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

### Do iMar or Proyecto Mastral have ads?

Neither iMar nor Proyecto Mastral shows ads.

### Which is updated more often, iMar or Proyecto Mastral?

iMar ships an update every 10 months, and Proyecto Mastral every 11 days. Most recently, iMar was updated on October 13, 2026 and Proyecto Mastral on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*