Comparison

Marine Barograph vs PredictCurrent

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

Head to head
About

Marine Barograph

This application logs atmospheric pressure with time, date, and GPS data, allowing for detailed graphing and analysis of trends. It can also share data wirelessly with other devices and convert older iPhones into stand-alone barographs.

Highlights
  • Automatic atmospheric pressure logging
  • GPS position, COG, and SOG recording
  • Pressure vs. time graphing with zoom/pan
  • Pressure trend arrows and tendency computation
  • Data export (log, GPX)
  • Wireless data sharing via Wi-Fi UDP
  • Converts older iPhones to stand-alone barographs
Features
Currently charting
Read full description

This app includes the same functionality as our free Marine Barometer app available in the App Store, with several significant enhancements added. You can review the basic features of the design by installing and becoming familiar with the free Marine Barometer app. New features in this Marine Barograph app include: automatic storage of atmospheric pressure during all times the app is running, even when in the background, with time and date, GPS position, course over ground (COG) and speed over ground (SOG). The pressure data can be graphed (pressure versus time) over several time intervals from 30 min on up to 16 days. The graphs can be pinch zoomed and panned for more detail and double tapped to reset the scales. Slide your finger across the graph to read time and pressure at specific points. Large digital displays can be viewed from a distance, including prominent pressure trend arrows (visible when data one hour old is available). On the three-hour display, the official pressure tendency is computed and displayed, and the shape of the curve in view can be used to determine the pressure tendency characteristic code used in official ship reports. Also new are options for pressure display (sea level or station), precision, and latitude and longitude formats. The stored data can be viewed from within the app or exported and shared according to time range of the storage files. The stored data are effectively a log of the voyage (or land travel) with navigation information as well as pressure data. Besides the pressure data, your track of GPS positions can also be exported as a GPX file to view in a navigation program or Google Earth. The app will also share wirelessly both pressure and position information with nearby devices. The data are broadcasted from the app via WIFI in UDP mode on a user selected port, so that the app can serve as a position source or pressure source for other navigation programs or devices, which makes it an excellent back-up to standard electronic charting systems. Or use it as a high-performance, stand-alone barograph. This app can convert a second or older iPhone (iPhone 6 or newer) not otherwise in use into a valuable stand-alone electronic barograph and voyage data logger. Just load the app and plug it in for continual viewing. A full Help file with details of operation and tips on the use of atmospheric pressure in navigation is included in the app. This file can be viewed online at https://www.starpath.com/marinebarograph along with videos showing how to use the app.

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

Screenshots

Marine Barograph4 screens
PredictCurrent4 screens

Verdict

The call

The clearest difference is price: PredictCurrent at Free against Marine Barograph's $14.99. PredictCurrent also leads on rating (4.5 vs 3.8) and ratings volume (271 vs 5). Marine Barograph's advantage is in-app purchases (none vs 5). On update cadence, ads, chart position 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

PredictCurrent is free to download; Marine Barograph costs $14.99 up front. PredictCurrent sells 5 in-app purchases, starting at $15.00 per month. Marine Barograph asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PredictCurrent holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: PredictCurrent has 271 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 43% of Marine Barograph's written reviews are positive against 57% of PredictCurrent's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard6 real differences · 5 level
Marine Barograph versus PredictCurrent: the parameters behind the verdict, then further details
ParameterMarine BarographPredictCurrent
Price$14.99Free — better
Rating3.8 (5 ratings)4.5 (271 ratings) — better
Positive reviews42.9% of reviews56.8% of reviews — better
Number of ratings5271 — better
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#175#92 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size67 MB50 MB
Age rating4+4+
DeveloperStarpath CorpPredictWind Limited

Customer experience

Marine Barograph

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews14 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

PredictCurrent

All ratings255 ratings
Positive85.9%
Neutral2.7%
Negative11.4%
Written reviews81 reviews
Positive56.8%
Neutral0.0%
Negative43.2%

Bugs and requests

Marine Barograph

Not enough reviews yet to summarise bugs or 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.)

In-app purchases

None

Marine Barograph

No 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

Questions

Is Marine Barograph free?
Marine Barograph costs $14.99, with no in-app purchases.
Is PredictCurrent free?
PredictCurrent is free to download, with in-app purchases available.
Which has better reviews, Marine Barograph or PredictCurrent?
PredictCurrent is rated higher. Marine Barograph averages 3.8 out of 5 from 5 ratings, while PredictCurrent averages 4.5 from 271 ratings.
Do Marine Barograph or PredictCurrent have ads?
Neither Marine Barograph nor PredictCurrent shows ads.
Which is updated more often, Marine Barograph or PredictCurrent?
Marine Barograph ships an update monthly, and PredictCurrent monthly. Most recently, Marine Barograph was updated on November 6, 2026 and PredictCurrent on November 7, 2026.
Which is more popular, Marine Barograph or PredictCurrent?
Marine Barograph currently peaks at #175 in the App Store charts, and PredictCurrent at #92. Chart position reflects recent download velocity rather than total install base.

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