# D vs Mar Azul

The clearest difference is rating: Mar Azul at 5.0 against D's 1.0. Mar Azul also leads on update cadence (every 3 months vs every 16 months) and ratings volume (33 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Mar Azul holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Mar Azul has 33 ratings behind it against 1, so its average is the more settled of the two.

D ships an update every 16 months, Mar Azul every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | D | Mar Azul |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/d-genius-viewer/id1137997606/reviews) | **[5.0 (33 ratings)](https://appshunter.io/ios/app/mar-azul/id1510629798/reviews)** |
| Number of ratings | 1 | **33** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 79 MB | 54 MB |
| Requires iOS | **14.3** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dreyfous & Associates](https://appshunter.io/developer/601526324) | [Comunidad Mar Azul Inc.](https://appshunter.io/developer/1510629797) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-genius-viewer/id1137997606)

This app offers an integrated digital curriculum designed for preschoolers. It uses interactive technology to engage children in learning, fostering research, critical thinking, and creativity. The program also encourages family and community involvement in the educational experience.

**Highlights:** Integrated digital curriculum, Interactive technology for learning, Fosters critical thinking, Nurtures creativity, Encourages family involvement, Promotes research and discovery

**Features:** macOS Compatibility

**In-app purchases:** none


### Mar Azul

[App page](https://appshunter.io/ios/app/mar-azul/id1510629798)

Access the latest content, connect with an online community, and receive inspiration. Watch or listen to messages, stay updated on news and events, and share content with friends. Participate in the 5K Mar Azul movement by discovering its purpose, registering, and accessing preparation resources.

**Highlights:** Watch or listen to messages, Stay updated on news and events, Share content with friends, Join the 5K Mar Azul movement, Register for the race, Access exclusive preparation resources

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Mar Azul free?

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

### Which has better reviews, D or Mar Azul?

Mar Azul is rated higher. D averages 1.0 out of 5 from 1 ratings, while Mar Azul averages 5.0 from 33 ratings.

### Do D or Mar Azul have ads?

Neither D nor Mar Azul shows ads.

### Which is updated more often, D or Mar Azul?

D ships an update every 16 months, and Mar Azul every 3 months. Most recently, D was updated on October 29, 2026 and Mar Azul on October 24, 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.*