# Marla Blue vs DiveGenius

The clearest difference is review sentiment: Marla Blue at 100% against DiveGenius's 50%. Marla Blue also leads on rating (4.8 vs 3.5) and iOS requirement (16.4 vs 26.0). DiveGenius's advantage is ads (none vs shown). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Marla Blue sells 3 in-app purchases, starting at $9.99 per month and DiveGenius sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Marla Blue holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 100% of Marla Blue's written reviews are positive against 50% of DiveGenius's.

Marla Blue ships an update every 3 days, DiveGenius weekly. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Marla Blue | DiveGenius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/marla-blue-diving-forecasts/id6673897108/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/divegenius-dive-visibility/id6751627941/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 94 MB | 313 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ocean AI](https://appshunter.io/developer/1767770858) | [Brett Roeloffs](https://appshunter.io/developer/1836102071) |

## What reviewers say

### Marla Blue

[App page](https://appshunter.io/ios/app/marla-blue-diving-forecasts/id6673897108)

Plan your next underwater adventure with detailed marine weather forecasts. Get AI-powered visibility predictions, swell, wind, tide, and temperature data for over 800 dive spots. Receive algae bloom alerts and real-time viz reports from a community of divers.

**Highlights:** Underwater visibility forecasts (AI & satellite), Swell, wind, tides, water temperature, Algae bloom alerts, Real-time viz reports from divers, 800+ dive spots (UK, Ireland, Australia, California), Map-based spot selection

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marla Blue Monthly | $9.99 | per month |
| Dive Season Pass (6 months) | $34.99 | per 6 months |
| Marla Annual Subscription | $59.99 | per year |


### DiveGenius

[App page](https://appshunter.io/ios/app/divegenius-dive-visibility/id6751627941)

Get real-time dive conditions directly on your lock screen. Check visibility, surf size, water temperature, and local notes before you go diving. Make informed decisions about your dive day with quick, glanceable information.

**Highlights:** Lock screen widgets, Live dive reports, Visibility updates, Surf size information, Water temperature, Local dive spot notes

**Features:** macOS Compatibility, Family Sharing, Apple Wallet, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiveGenius Pro | $4.99 | per 7 days |
| DiveGenius Pro | $5.99 | per month |
| DiveGenius Pro | $8.99 | per month |
| DiveGenius Pro Yearly | $49.99 | per year |
| Wallpaper Pack | $4.99 | one-time |


## Frequently asked questions

### Is Marla Blue free?

Marla Blue is free to download, with in-app purchases available.

### Is DiveGenius free?

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

### Which has better reviews, Marla Blue or DiveGenius?

Marla Blue is rated higher. Marla Blue averages 4.8 out of 5 from 4 ratings, while DiveGenius averages 3.5 from 4 ratings.

### Do Marla Blue or DiveGenius have ads?

Marla Blue shows ads; DiveGenius does not.

### Which is updated more often, Marla Blue or DiveGenius?

Marla Blue ships an update every 3 days, and DiveGenius weekly. Most recently, Marla Blue was updated on October 27, 2026 and DiveGenius on October 7, 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.*