Comparison

PredictWind vs HumProbCalc (N)

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

Head to head
About

PredictWind

Get accurate marine weather forecasts and powerful tools for wind, waves, and currents. Plan your trips with routing and departure planning features, and stay informed with live observations and alerts. Ideal for all marine activities.

Highlights
  • Accurate marine weather forecasts
  • Wind, wave, and current data
  • Weather routing and departure planning
  • High-resolution marine weather maps
  • Live wind observations and webcams
  • Weather alerts
Features
Read full description

Accurate marine weather forecasts and powerful tools utilizing wind, wave and currents, save you time, keep you safe and ensure you get the most out of every day on the water. Access the world’s top-ranking forecast models for reliable and accurate wind and weather data, including ECMWF, AIFS, ICON, UKMO, GFS, and more. Our very own PWAi, PWG & PWE models deliver unmatched accuracy in the short-to-medium range. View high resolution marine weather maps for wind, gust, CAPE, wave, rain, cloud, pressure, air temperature, sea temperature, ocean data and solunar. Suitable for sailing yacht, powerboat and any other marine weather activity. In addition to marine forecasts, PredictWind also provides a suite of powerful marine weather tools to save you time and keep you safe at sea using Wind, Wave, Tidal and Ocean currents. Weather Routing takes your start and end points then calculates your route factoring in tides, currents, wind and wave data, depth and your Sailing Yacht or Powerboats unique dimensions to give you the best route for comfort or speed. Departure Planning quickly summarizes the forecast marine weather conditions you’ll encounter along your route if leaving on day 1, 2, 3, or 4. Use this data to select the perfect departure date, every time for your Sailing Yacht or Powerboat. ADDITIONAL FEATURES - Daily Briefing: Powerful marine weather data condensed into a simple text forecast. - Maps: High resolution forecasts maps with animated streamlines, wind barbs or arrows. - Tables: The ultimate dashboard for detailed analysis of Wind, Wave, Rain and more. - Graphs: Compare multiple marine forecasts at the same time. - Live Wind Observations and Webcams: Know what’s happening with the weather right now at your local spot. - Local Knowledge: Hear about the best marine spots, amenities and activities at your destination. - Weather Alerts: Set your preferences then get alerts when conditions are just the way you like them for Wind, wave and other parameters. - Ocean Data: See what’s happening under the waves with ocean and tidal currents, and sea temperature. - GPS Tracking: Get a free customized GPS tracking page for your blog or website showing wind data overlaid. - AIS Data: View over 280,000 vessels worldwide on the AIS network to see marine traffic. Terms and conditions: https://www.predictwind.com/about-us/terms-and-conditions
 Privacy policy: https://www.predictwind.com/about-us/privacy-policy

About

HumProbCalc (N)

Features
Read full description

HumProbCalc North is the field tool for estimating dead fuel moisture and fire ignition probability in seconds, based on temperature, relative humidity, shade, sun exposure, terrain slope and time of day. KEY FEATURES - Fast fuel moisture calculation from temperature and relative humidity - Ignition probability calculation, combining humidity, shade, exposure and slope - Support for three temperature units (ºC, ºF, ºK) - Automatic location detection with place-name lookup - History of all calculations, with date, time and location - Simple, fast interface built for field use, even with poor connectivity - Available in Portuguese, English, French and Spanish WHO IT'S FOR Built for firefighters, forest rangers, wildland fire crews, civil protection technicians, and anyone who needs to quickly assess forest fire risk on the ground. Calculations are based on standard reference tables for dead fine fuel moisture and ignition probability used in forest fire risk assessment.

Screenshots

PredictWind4 screens
HumProbCalc (N)4 screens

Verdict

The call

The clearest difference is price: PredictWind at Free against HumProbCalc (N)'s $1.99. PredictWind also leads on update cadence (every 11 days vs every 4 months) and chart position (#22 vs unranked). HumProbCalc (N)'s advantage is in-app purchases (none vs 16). On ads, 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

PredictWind is free to download; HumProbCalc (N) costs $1.99 up front. PredictWind sells 16 in-app purchases, starting at $6.99 per month. HumProbCalc (N) asks for nothing beyond the download.

UpkeepUpdate frequency

PredictWind ships an update every 11 days, HumProbCalc (N) every 4 months. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 7 level
PredictWind versus HumProbCalc (N): the parameters behind the verdict, then further details
ParameterPredictWindHumProbCalc (N)
PriceFree — better$1.99
Rating4.8 (33K ratings) — better—
Positive reviews84.2% of reviews—
Number of ratings33K — better—
Update frequencyEvery 11 days — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#22 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.515.0 — better
Further details — not scored
Size40 MB4 MB
Age rating4++4
DeveloperPredictWind LimitedIvan Miguel Serrano Pires

Bugs and requests

PredictWind

Reported bugs

3 issues
  • App crashes or freezes on some devices
  • Inconsistent performance across different locations
  • Subscription issues and billing problems

Requested features

5 requests
  • Improved integration with other apps and charts
  • More frequent weather model updates
  • Earlier weather forecast updates
  • Ability to customize alert settings
  • Improved offline functionality

HumProbCalc (N)

Not enough reviews yet to summarise bugs or requests.

In-app purchases

16 purchases

PredictWind

Subscriptions11
  • Basic - Monthly7 Days trial$6.991 Month
  • Basic - 3 Monthly$12.003 Months
  • Basic - 3 Monthly7 Days trial$12.003 Months
Show 8 more
  • Basic - Annual7 Days trial$29.001 Year
  • Standard - Monthly7 Days trial$49.001 Month
  • Standard - 3 Monthly$99.003 Months
  • Professional - Monthly7 Days trial$99.001 Month
  • Standard - 3 Monthly7 Days trial$99.003 Months
  • Standard - Annual7 Days trial$249.001 Year
  • Professional - 3 Monthly7 Days trial$249.003 Months
  • Professional - Annual7 Days trial$499.001 Year
One-time5
  • Basic Subscription, 1 Month$3.99
  • Basic Subscription, 3 Months$11.99
  • Basic Subscription, 12 Months$28.99
Show 2 more
  • Standard Subscription, 1 Month$48.99
  • Professional Subscription, 1 Month$99.99
None

HumProbCalc (N)

No in-app purchases

Questions

Is PredictWind free?
PredictWind is free to download, with in-app purchases available.
Is HumProbCalc (N) free?
HumProbCalc (N) costs $1.99, with no in-app purchases.
Do PredictWind or HumProbCalc (N) have ads?
Neither PredictWind nor HumProbCalc (N) shows ads.
Which is updated more often, PredictWind or HumProbCalc (N)?
PredictWind ships an update every 11 days, and HumProbCalc (N) every 4 months. Most recently, PredictWind was updated on October 14, 2026 and HumProbCalc (N) on October 6, 2026.

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