# PredictWind vs HumProbCalc (N)

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.

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.

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.

## The numbers

| Metric | PredictWind | HumProbCalc (N) |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (33K ratings)](https://appshunter.io/ios/app/predictwind-marine-forecasts/id477048487/reviews)** | — |
| Number of ratings | **33K** | — |
| Positive reviews | 84.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#22** | — |
| Size | 40 MB | 4 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [PredictWind Limited](https://appshunter.io/developer/477048590) | [Ivan Miguel Serrano Pires](https://appshunter.io/developer/654748916) |

## What reviewers say

### PredictWind

[App page](https://appshunter.io/ios/app/predictwind-marine-forecasts/id477048487)

**Currently charting:** #22 Top Grossing · Weather, #52 Top Free · Weather (US App Store)

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:** Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic - Monthly | $6.99 | per month |
| Basic - 3 Monthly | $12.00 | per 3 months |
| Basic - 3 Monthly | $12.00 | per 3 months |
| Basic - Annual | $29.00 | per year |
| Standard - Monthly | $49.00 | per month |
| Standard - 3 Monthly | $99.00 | per 3 months |
| Professional - Monthly | $99.00 | per month |
| Standard - 3 Monthly | $99.00 | per 3 months |
| Standard - Annual | $249.00 | per year |
| Professional - 3 Monthly | $249.00 | per 3 months |
| Professional - Annual | $499.00 | per year |
| Basic Subscription, 1 Month | $3.99 | one-time |
| Basic Subscription, 3 Months | $11.99 | one-time |
| Basic Subscription, 12 Months | $28.99 | one-time |
| Standard Subscription, 1 Month | $48.99 | one-time |
| Professional Subscription, 1 Month | $99.99 | one-time |

**What reviewers like**

- 👍 Accurate weather forecasts
- 🚀 Comprehensive data and features
- 💡 Useful for sailing, fishing, and other outdoor activities
- 👍 Easy to use and navigate
- 🚀 Reliable and dependable

**What reviewers complain about**

- 🐛 Occasional inaccuracies in weather predictions
- 💰 Expensive subscription costs
- 🔒 Difficult to cancel subscription
- 🔒 Locked into using proprietary hardware and services
- 🔒 Limited free features

**Reported bugs**

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

**Requested features**

- 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)

[App page](https://appshunter.io/ios/app/humprobcalc-n/id654748913)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*