Comparison

My Coast vs Marla Blue

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

My Coast

This app provides real-time coastal safety and information to help users make informed decisions before visiting the beach or entering the water. It offers details on tides, sea conditions, weather, and local facilities, tailored to specific activities and amenity needs.

Highlights
  • Live safety data
  • Tide and sea condition information
  • Weather forecasts
  • Local facilities and amenities
  • Activity-specific location filtering
  • Amenity-based location filtering
Features
Read full description

My Coast is a coastal safety and information app developed in collaboration with the RNLI, Meteomatics and SWW, endorsed by Surf Life Saving Great Britain, Visit Cornwall, Cornwall Council and the Above Water charity. Our vision is to help improve survival rates for coastal incidents by enabling better decision making before entering the water or visiting the beach. My Coast gives you all the information you need to choose the best location for a safe, enjoyable day at the beach. You’ll have live safety data detailing tides, sea conditions, weather, local facilities and amenities, all helping you to make the best decisions both before and during your visit. My Coast allows users to select the coastal activity they are interested in (for example: paddle-boarding, surfing, swimming) and then select which facilities and amenities they require (such as a cafe, parking, showers or toilets). Users will then be presented with a filterable list of the best locations on the coast for their requirements, using real-time data on location, weather, wind speed and direction, activities, facilities and amenities.

About

Marla Blue

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
Read full description

Dive smarter with Marla, the ultimate marine weather app for divers! Whether you’re a scuba diver, freediver, spearo or snorkeler, Marla gives you everything you need to plan your next underwater adventure. Check among 1500+ dive spots across the UK, Ireland, Australia, New Zealand, South Africa & California or tap anywhere on the map to get: - Underwater visibility forecasts powered by AI and satellite data - Swell, wind, tides, water temperature & wave conditions - Algae bloom alerts - Real-time viz reports and photos from the growing community of local divers Stop guessing. Download Marla and dive with clarity. Learn more: https://www.marla.blue/how-marla-works Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://marla.blue/privacy

Screenshots

My Coast4 screens
Marla Blue4 screens

Verdict

The call

The clearest difference is in-app purchases: My Coast at none against Marla Blue's 4. My Coast also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). Marla Blue's advantage is update cadence (every 3 days vs every 10 days) and review sentiment (100% vs 85%). On price, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Marla Blue sells 4 in-app purchases, starting at $9.99 per month. My Coast asks for nothing beyond the download.

UpkeepUpdate frequency

My Coast ships an update every 10 days, Marla Blue every 3 days. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard5 real differences · 5 level
My Coast versus Marla Blue: the parameters behind the verdict, then further details
ParameterMy CoastMarla Blue
PriceFreeFree
Rating—4.8 (4 ratings) — better
Positive reviews85.0% of reviews100.0% of reviews — better
Number of ratings—4 — better
Update frequencyEvery 10 daysEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better16.4
Further details — not scored
Size20 MB94 MB
Age rating4+4+
DeveloperFlow Mobile LtdOcean AI

Customer experience

My Coast

Written reviews20 reviews
Positive85.0%
Neutral0.0%
Negative15.0%

Marla Blue

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

My Coast

No in-app purchases

4 purchases

Marla Blue

Subscriptions4
  • Marla Blue Monthly3 Days trial$9.991 Month
  • Dive Season Pass (6 months)3 Days trial$34.996 Months
  • Annual7 Days trial$44.991 Year
Show 1 more
  • Marla Annual Subscription7 Days trial$59.991 Year

Questions

Is My Coast free?
My Coast is free to download, with no in-app purchases.
Is Marla Blue free?
Marla Blue is free to download, with in-app purchases available.
Do My Coast or Marla Blue have ads?
Marla Blue shows ads; My Coast does not.
Which is updated more often, My Coast or Marla Blue?
My Coast ships an update every 10 days, and Marla Blue every 3 days. Most recently, My Coast was updated on November 3, 2026 and Marla Blue on November 12, 2026.

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