Comparison

PredictCurrent vs Big Buoy

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

Head to head
About

PredictCurrent

Navigate coastal waters with detailed tidal and ocean current maps. Access 10-day forecasts for currents, wind, waves, and sea temperatures. Essential for safe marine planning and exploration.

Highlights
  • Ultra-high-resolution 100m tidal current maps
  • 400m and 4km global coastline coverage
  • 10-day animated forecasts for currents, wind, and waves
  • Hourly tide chart data
  • Wind-against-current interaction analysis
  • Sea temperature tracking
Features
Currently charting
Read full description

Navigate coastal adventures with precision using real-time tidal current data from PredictWind. PredictCurrent delivers ultra-high-resolution 100m tidal current maps, plus 400m and 4km maps covering 90% of global coastlines. It also includes full ocean current coverage, empowering fishermen, sailors, and coastal explorers with essential tools for current tracking, tide planning, and marine navigation. Developed by PredictWind’s expert oceanographers, trusted globally for industry-leading forecasting, PredictCurrent supports confident and safe coastal navigation for boating, fishing, sailing, and kayaking. Why PredictCurrent - Unrivalled Precision: Ultra-high-resolution 100m tidal current maps provide unmatched detail for coastal tide planning, ideal for fishing, sailing, or paddle sports. Also includes 400m and 4km resolution maps. - Trusted Expertise: Built by PredictWind, pioneers in marine and ocean current forecasting, delivering professional-grade data. - Comprehensive Tracking: Monitor tidal currents, ocean currents, winds, waves, and sea temperatures with animated maps and hourly tide chart data for 10 days. - Coastal Navigation: Join fishermen, sailors, kayakers, and coastal explorers worldwide who rely on PredictWind’s marine weather and current data for informed navigation. Key Features - Ultra-High-Resolution 100m Tidal Current Maps: Visualise intricate nearshore water current movements with clarity, ideal for coastal navigation, route planning, and safety. - High-Resolution 400m & 4km Maps: Access tide and ocean current coverage for 90% of global coastlines, seamlessly integrated with live ocean current data. - Advanced Dashboard: Analyse wind-against-current interactions, wave heights, tide cycles, and directions using accurate ECMWF wind forecasts. - Animated 10-Day Forecasts: View dynamic tidal currents, ocean currents, wind, waves, and sea temperature forecasts on interactive marine maps. - Detailed Data Tables: Access hourly data on current speed and direction, plus alerts for wind-against-current situations. Tailored for fisherman, sailors, kayakers, and coastal adventurers, PredictCurrent offers essential tools for safe marine planning—backed by PredictWind’s proven ocean data and current tracking accuracy. Start with a 14-day free trial. Access ultra-high-resolution tidal current data, tide charts, ocean current forecasts, wind, waves, and sea temperature tools for your next coastal journey. Terms & Conditions: https://www.predictcurrent.com/terms-and-conditions Privacy Policy: https://www.predictcurrent.com/privacy-policy

About

Big Buoy

This marine forecasting app provides detailed data for fishing and boating, including wind, tides, water temperature, and live buoy information. It allows users to save and privately track their favorite spots with offline access to crucial data.

Highlights
  • Private saved fishing spots
  • Side-by-side wind forecast comparison
  • Interactive map with wind, chlorophyll, and water temp overlays
  • Live NOAA buoy data
  • 7-day tide charts with solunar overlays
  • Offline access to saved data
Features
Read full description

Big Buoy puts live marine conditions in front of you before you fish. Real NOAA buoy data, tides, solunar tables, wind and wave forecasts. The stuff that decides whether you go and where you set up. LIVE NOAA BUOYS 873 stations across the East Coast, Gulf, Great Lakes, and West Coast, updated every 10 minutes. Water temp, wave height, swell period, wind speed and direction. Straight from the buoy, no fluff. TIDES THAT DON'T GO DOWN Tide predictions for 3,400+ stations, served from Big Buoy's own servers. When government feeds have an outage, your tides keep loading. Charts show highs, lows, and the current stage at a glance, and the gauge picker always shows the closest station to you with live status. DEPTH CHART (PRO) Survey-grade bathymetry built from NOAA ENC and Army Corps eHydro surveys, layered right on the map. Read the bottom. Find the ledges, humps, channels, and drop-offs that hold fish, inshore and offshore. SOLUNAR FISHING TIMES Major and minor feeding windows computed with a real astronomical model, tied to your spot. Plan the day around the bite instead of the other way around. WIND, WAVES & WEATHER 7-day forecasts free, 16 days with Pro. Pro also compares all five major models (GFS, HRRR, ECMWF, GEM, ICON) so you can fish the consensus instead of trusting one run. SAVED SPOTS & MONDAY BRIEFING Save unlimited spots. Get a Monday morning email that reads the week ahead for your water so you can pick your day early. BIG BUOY PRO For anglers who fish around a work schedule. Limited days on the water means every trip has to count. Pro gives you the 16-day window, every forecast model, the Depth Chart, and satellite overlays (sea surface temperature, chlorophyll, ocean currents) to pick the right day and run straight to fish. Ad-free. $4.99/month or $39.99/year. The free tier stays genuinely useful: live buoys, 7-day forecasts, tides, and solunar, supported by ads. REAL DATA, REAL SOURCES NOAA NDBC buoys. NOAA CO-OPS tide predictions. NOAA ENC and USACE eHydro surveys. Copernicus satellite data. We show you where every number comes from. Questions or a station you want added? big-buoy.com — Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://big-buoy.com/privacy

Screenshots

PredictCurrent4 screens
Big Buoy4 screens

Verdict

The call

The clearest difference is review sentiment: Big Buoy at 100% against PredictCurrent's 57%. Big Buoy also leads on rating (5.0 vs 4.5) and update cadence (every 5 days vs monthly). PredictCurrent's advantage is ads (none vs shown) and ratings volume (266 vs 19). On price, in-app purchases, device support and iOS requirement 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. PredictCurrent sells 5 in-app purchases, starting at $15.00 per month and Big Buoy sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Big Buoy holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: PredictCurrent has 266 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 57% of PredictCurrent's written reviews are positive against 100% of Big Buoy's.

UpkeepUpdate frequency

PredictCurrent ships an update monthly, Big Buoy every 5 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard7 real differences · 4 level
PredictCurrent versus Big Buoy: the parameters behind the verdict, then further details
ParameterPredictCurrentBig Buoy
PriceFreeFree
Rating4.5 (266 ratings)5.0 (19 ratings) — better
Positive reviews56.6% of reviews100.0% of reviews — better
Number of ratings266 — better19
Update frequencyMonthlyEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
Best chart rank#71 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size50 MB38 MB
Age rating4+4+
DeveloperPredictWind LimitedRelatively Salty

Customer experience

PredictCurrent

All ratings255 ratings
Positive85.9%
Neutral2.7%
Negative11.4%
Written reviews76 reviews
Positive56.6%
Neutral0.0%
Negative43.4%

Big Buoy

All ratings19 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

PredictCurrent

Reported bugs

8 issues
  • Unable to add location error messages despite valid coordinates
  • Location setup fails to respond or complete
  • Password not saved correctly in database, preventing login
  • Account creation fails with character handling errors
  • App crashes when setting locations
Show 3 more
  • Free trial access inconsistent across devices
  • iPad version blocks access to charts despite iPhone trial access
  • Data unavailable errors at valid deep water locations

Requested features

9 requests
  • Extended forecast data for full 24-hour next day coverage
  • Smaller time increment stepping (sub-hourly) for racing
  • Exact tide turn time information beyond hourly data
  • Legend/symbol guide for app indicators
  • Improved coastal and estuarine modeling
Show 4 more
  • Better 100m resolution coverage beyond UK Solent region
  • Cross-platform synchronization between iPhone and iPad
  • Offline access to saved locations
  • Multi-language support (German, French, etc.)

Big Buoy

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

PredictCurrent

Subscriptions5
  • PredictCurrent Pro 1-Month14 Days trial$15.001 Month
  • PredictCurrent Pro 3-Monthly14 Days trial$29.003 Months
  • PredictCurrent Pro 3-Monthly3 Days trial$29.003 Months
Show 2 more
  • PredictCurrent Pro 3-Monthly7 Days trial$29.003 Months
  • PredictCurrent Pro Annual14 Days trial$99.001 Year
4 purchases

Big Buoy

Subscriptions4
  • Big Buoy Pro Monthly Founding$3.991 Month
  • Big Buoy Pro Monthly$4.991 Month
  • Big Buoy Pro Annual Founding$29.991 Year
Show 1 more
  • Big Buoy Pro Annual$39.991 Year

Questions

Is PredictCurrent free?
PredictCurrent is free to download, with in-app purchases available.
Is Big Buoy free?
Big Buoy is free to download, with in-app purchases available.
Which has better reviews, PredictCurrent or Big Buoy?
Big Buoy is rated higher. PredictCurrent averages 4.5 out of 5 from 266 ratings, while Big Buoy averages 5.0 from 19 ratings.
Do PredictCurrent or Big Buoy have ads?
Big Buoy shows ads; PredictCurrent does not.
Which is updated more often, PredictCurrent or Big Buoy?
PredictCurrent ships an update monthly, and Big Buoy every 5 days. Most recently, PredictCurrent was updated on October 20, 2026 and Big Buoy on October 15, 2026.

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