Comparison

Marla Blue vs DiveSight

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

Head to head
About

Marla Blue

This marine weather app provides detailed forecasts for divers, including underwater visibility, swell, wind, tides, and water temperature. It covers over 1500 dive spots and offers real-time reports and photos from a community of local divers.

Highlights
  • Underwater visibility forecasts (AI & satellite)
  • Swell, wind, tides, water temp, wave conditions
  • Algae bloom alerts
  • 1500+ UK, AU, NZ, SA, CA dive spots
  • Real-time viz reports & photos
  • 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

About

DiveSight

This app forecasts marine life abundance and underwater visibility at dive sites globally. Plan your dives with detailed daily updates, long-term climatology, and site-specific conditions to maximize your underwater experience.

Highlights
  • Marine Life Abundance Index
  • Underwater Visibility Forecasts
  • 10-Year Monthly Climatology
  • Depth-Resolved Conditions
  • Dive Site & Species Search
  • Seasonal Event Calendar
  • Offline Access (Pro)
Features
Read full description

Know what you'll see before you dive — the first app to forecast both marine life abundance and underwater visibility, at dive sites worldwide. Updated daily. Pick the right site, the right day, and the right season before you ever get wet. WHY DIVESIGHT Weather apps help tell you if you can dive. DiveSight also tells you how good it's likely to be — how much marine life you're likely to encounter and how far you'll see, days in advance, anywhere in the world. It's the difference between hoping and making decisions based on the best ocean intelligence available. THE FORECASTS - Marine Life Index (0–100) of abundance for every site, updated daily — see which days will be better than usual, up to a week ahead. - Underwater visibility — including the tens of thousands of sites no crowdsourced app has reports for. DiveSight predicts visibility worldwide from satellite data and fisheries oceanography. Plan your dive with confidence. – 10 years of monthly climatology per site: water temperature, visibility, currents, weather, wind, and more — so you can pick the actual best month to go, year over year. – Depth-resolved conditions: temperatures at the surface, 10m/30ft, and 30m/90ft, plus currents, waves, tides, sun, and moon. Everything you want to know about conditions. FIND YOUR NEXT DIVE – By destination — browse a heat map of 28,000+ dive sites across 1,400+ regions. Zoom into Raja Ampat, Cozumel, the Red Sea, Komodo, the Maldives, the Galápagos, or the hidden sites between them. – By creature — search 6,000+ marine species and see exactly where and when you can dive with them: hammerheads, mantas, mola mola, whale sharks, mandarinfish, thresher sharks, nudibranchs, and thousands more. Every species linked to the sites, seasons, and regions where it appears. – Around you — tap once to see every dive site within range, sorted by today's conditions, marine life, or distance. Perfect for layovers, road trips, and your local shore dive. – By season — a calendar of bucket-list events with predicted timing windows: the sardine run, manta cleaning stations, hammerhead schools, whale shark aggregations, mobula ray gatherings, and spawning events. Find what's peaking right now — and where to go for it. WHO IT'S FOR Scuba divers planning a liveaboard, a weekend boat, or a shore dive. Snorkelers and freedivers chasing clear water and big animals. Vacation divers picking the best week — and locals deciding if today is the day. FREE TO START Browse 15,000+ dive sites, 3,000+ marine species, the seasonal events calendar, today's live conditions, and unlimited dive and marine life logging — free, forever. DiveSight Pro unlocks the full 7-day forecasts for marine life, visibility, water, and weather conditions, along with 10-year monthly climatology, the complete 28,000+ site and 6,000+ species marine life-list, and offline access to dive sites, forecasts, and marine life info. Two weeks of Pro are on us: one when you create an account and another one whenever you'd like. BUILT ON REAL OCEAN SCIENCE Institutional-grade satellite and oceanographic data from NASA, NOAA, the European Space Agency, and other leading sources — refreshed daily, in the palm of your hand. Log your dives and sync sightings with iNaturalist. Designed for scuba divers, snorkelers, freedivers, and all ocean lovers. iPhone & iPad. The ocean, forecasted. Your next great dive starts with comprehensive ocean intelligence. DiveSight Pro is an auto-renewing subscription. Plans: Weekly, Monthly, and Annual. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in Settings → Apple ID → Subscriptions. Terms of Use (EULA): https://divesight.ai/terms Privacy Policy: https://divesight.ai/privacy

Screenshots

Marla Blue4 screens
DiveSight4 screens

Verdict

The call

The clearest difference is ads: DiveSight at none against Marla Blue's shown. DiveSight also leads on rating (5.0 vs 4.8) and ratings volume (31 vs 4). Marla Blue's advantage is iOS requirement (16.4 vs 26.0). On price, review sentiment, update cadence and in-app purchases 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 3 in-app purchases, starting at $9.99 per month and DiveSight sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DiveSight holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: DiveSight has 31 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Marla Blue ships an update every 3 days, DiveSight weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Marla Blue versus DiveSight: the parameters behind the verdict, then further details
ParameterMarla BlueDiveSight
PriceFreeFree
Rating4.8 (4 ratings)5.0 (31 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings431 — better
Update frequencyEvery 3 days — betterWeekly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS16.4 — better26.0
Further details — not scored
Size94 MB113 MB
Age rating4+4+
DeveloperOcean AIDiveSight LLC

Customer experience

Marla Blue

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

DiveSight

All ratings31 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Marla Blue

Subscriptions3
  • Marla Blue Monthly3 Days trial$9.991 Month
  • Dive Season Pass (6 months)3 Days trial$34.996 Months
  • Marla Annual Subscription7 Days trial$59.991 Year
3 purchases

DiveSight

Subscriptions3
  • DiveSight Pro - Weekly$4.997 Days
  • DiveSight Pro - Monthly$9.991 Month
  • DiveSight Pro - Annual$79.991 Year

Questions

Is Marla Blue free?
Marla Blue is free to download, with in-app purchases available.
Is DiveSight free?
DiveSight is free to download, with in-app purchases available.
Which has better reviews, Marla Blue or DiveSight?
DiveSight is rated higher. Marla Blue averages 4.8 out of 5 from 4 ratings, while DiveSight averages 5.0 from 31 ratings.
Do Marla Blue or DiveSight have ads?
Marla Blue shows ads; DiveSight does not.
Which is updated more often, Marla Blue or DiveSight?
Marla Blue ships an update every 3 days, and DiveSight weekly. Most recently, Marla Blue was updated on October 30, 2026 and DiveSight on October 31, 2026.

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