# Spotadvisor Surf Forecast vs Marla Blue

The clearest difference is ads: Spotadvisor Surf Forecast at none against Marla Blue's shown. Marla Blue's advantage is update cadence (every 3 days vs every 10 days). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Spotadvisor Surf Forecast sells 1 in-app purchase, starting at $19.99 per year and Marla Blue sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Spotadvisor Surf Forecast ships an update every 10 days, Marla Blue every 3 days. The most recent releases landed on November 7, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Spotadvisor Surf Forecast | Marla Blue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/marla-blue-diving-forecasts/id6673897108/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 41 MB | 94 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pixelnomads Ltd](https://appshunter.io/developer/1889369753) | [Ocean AI](https://appshunter.io/developer/1767770858) |

## What reviewers say

### Spotadvisor Surf Forecast

[App page](https://appshunter.io/ios/app/spotadvisor-surf-forecast/id1513801699)

This app provides a personalized surf forecast by combining marine weather data with your past surf session ratings. It learns your preferences to offer more accurate predictions for your favorite spots. You can also benefit from community ratings at new locations or create custom spots worldwide.

**Highlights:** Personalized surf forecasts, Surf session logging and rating, Community spot ratings, Custom spot creation, Friend connections and session sharing, Ad-free PRO version

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spotadvisor PRO annual | $19.99 | per year |


### Marla Blue

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

Plan your underwater adventures with detailed marine weather forecasts. Get AI-powered visibility predictions, swell, wind, tide, and temperature data for over 1500 dive spots worldwide. Receive algae bloom alerts and real-time reports from a community of local divers.

**Highlights:** Underwater visibility forecasts (AI & satellite), Swell, wind, tides, water temperature, Algae bloom alerts, Real-time viz reports & photos, 1500+ global dive spots, Community-driven insights

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marla Blue Monthly | $9.99 | per month |
| Dive Season Pass (6 months) | $34.99 | per 6 months |
| Annual | $44.99 | per year |
| Marla Annual Subscription | $59.99 | per year |


## Frequently asked questions

### Is Spotadvisor Surf Forecast free?

Spotadvisor Surf Forecast is free to download, with in-app purchases available.

### Is Marla Blue free?

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

### Do Spotadvisor Surf Forecast or Marla Blue have ads?

Marla Blue shows ads; Spotadvisor Surf Forecast does not.

### Which is updated more often, Spotadvisor Surf Forecast or Marla Blue?

Spotadvisor Surf Forecast ships an update every 10 days, and Marla Blue every 3 days. Most recently, Spotadvisor Surf Forecast was updated on November 7, 2026 and Marla Blue on November 11, 2026.

---

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