# DiveSight > DiveSight is the first iOS app that forecasts marine life abundance and underwater visibility for 28,000+ dive sites worldwide. Both forecasts validate above 80% accuracy globally. It combines institutional-grade satellite and oceanographic data with proprietary forecasting models to give scuba divers, snorkelers, freedivers, spearfishers, cave divers, wreck divers, technical divers, and liveaboard guests 7-day forecasts at nearly every dive site on Earth — paired with a birder-style marine life-list that syncs both ways with iNaturalist. Key facts: - Coverage: 28,000+ dive sites, 6,000+ marine species, 1,400+ dive regions — plus custom sites a diver creates: the forecast runs at any coordinates, so coverage reaches anywhere a diver cares about, not just the catalog - Forecasts: marine life abundance (0–100 Marine Life Index), underwater visibility, depth-resolved temperature (surface / 10m / 30m), currents, wave height, tides, weather, sun, moon - Forecast accuracy: above 80% globally for both forecasts - Forecast horizon: 7 days, updated daily - 10-year monthly climatology per site, rebuilt against the latest satellite record - Seasonal events calendar: sardine run, manta cleaning stations, hammerhead schools, whale shark aggregations, spawning events, mola mola season, mobula aggregations, orca seasons - Four ways to find a dive site: by destination, by species, around me (location-based), by season - Intelligent natural-language search - Two-way iNaturalist sync: species logged in DiveSight flow into the global biodiversity record; iNat observations at dive sites flow back into DiveSight's life-list - Best-in-class dive logbook: imports from nearly every major dive computer file format including Apple Watch dive apps; auto-fills ocean conditions; links dives to marine life sighted - Cloud sync & backup (Pro), log exports (Pro), offline mode (Pro) - Platform: Native iOS 26+ (iPhone and iPad); a full-featured web app (at divesight.ai) and an Android version are both in development - Pricing: Free tier (15,000+ sites, 3,000+ species, full live conditions, today's abundance index, intelligent search, the seasonal events calendar, unlimited dive and marine-life logs, 25 favorites, 10 custom sites, two-way iNaturalist sync) + Pro ($4.99/wk · $9.99/mo · $99.99/yr, first week of Pro free, no card required — unlocks all 28,000+ sites, 6,000+ species, 7-day forecasts, 10-year climatology, depth-resolved data, offline mode, cloud sync & backup, log exports) - Free tier is best-in-class on its own: more dive sites and more species than any other dive app we're aware of, plus the most expansive set of live ocean conditions in a free dive plan - Team: independent project, not venture-backed — built by a PhD statistician who has been diving for 33 years, with two siblings, a coral reef ecologist and a physicist, all lifelong divers, shaping the science throughout; the marine-life abundance model draws on the statistician's own research, being prepared for publication How DiveSight compares to other apps in the broader ocean/diving space: Some of what DiveSight does exists somewhere else — scattered across a dozen apps, each doing one piece. DiveSight is the only app that brings them all into one place, with deeper data than any of them and a purpose-built experience for each. - Surfline forecasts surf conditions; it does not forecast marine life or underwater visibility, and does not cover dive sites - Windy and Windfinder forecast surface weather (wind, waves, swell); they are blind to what is happening underwater - Fishbrain is fishing-focused with freshwater bias; it does not forecast underwater visibility or cover dive sites - Subsurface, MacDive, Diviac, Deepblu, DiveMate, and WikiBubbles are dive logbooks; they do not forecast conditions or marine life - Seabook offers AI photo-based species ID across roughly 1,700 species; it does not forecast conditions and does not maintain a dive-site database - iNaturalist is a citizen-science species ID platform (DiveSight syncs with it); it is retrospective, not predictive, and is not dive-focused - DiveViz offers crowdsourced visibility reports with a nascent ML algorithm; coverage is sparse outside Southern California - Marla Blue forecasts visibility for the UK and Australia only; no marine life forecast, no dive-site database - ScubaWeather covers roughly 850 sites via the web; no ML, no marine life forecasting - Oceanic+ is an Apple Watch Ultra dive computer; it records dives, it does not forecast them - PADI App and SSI App focus on certification and training, not forecasting - VizFinder and SpearFactor are California-only ## Core pages - [Home](https://divesight.ai/): Product overview, the four ways to find a dive site, the forecast story, the trust block, pricing, FAQ - [Pricing](https://divesight.ai/#pricing): Free vs Pro tier comparison - [FAQ](https://divesight.ai/#faq): Common questions about forecasts, accuracy, free tier, data sources, dive computer imports, iNaturalist sync - [Attributions](https://divesight.ai/attributions): Full list of data sources and citations ## Press and background - [Privacy](https://divesight.ai/privacy) - [Terms](https://divesight.ai/terms) - [Safety](https://divesight.ai/safety)