# PredictWind vs Swell Signal

The clearest difference is update cadence: Swell Signal at every 2 days against PredictWind's every 9 days. PredictWind's advantage is chart position (#23 vs unranked) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PredictWind sells 10 in-app purchases, starting at $6.99 per month and Swell Signal sells 3 in-app purchases, starting at $5.00 per month. Whichever you choose, the download price is not the number that matters.

PredictWind ships an update every 9 days, Swell Signal every 2 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PredictWind | Swell Signal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (33K ratings)](https://appshunter.io/ios/app/predictwind-marine-forecasts/id477048487/reviews)** | — |
| Number of ratings | **33K** | — |
| Positive reviews | 84.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#23** | — |
| Size | 50 MB | 58 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [PredictWind Limited](https://appshunter.io/developer/477048590) | [John Hanks](https://appshunter.io/developer/858804357) |

## What reviewers say

### PredictWind

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

**Currently charting:** #23 Top Grossing · Weather, #57 Top Free · Weather (US App Store)

Access highly accurate marine weather forecasts and advanced tools for wind, waves, and currents. Plan your voyages, optimize routes, and stay informed with real-time data and alerts for safer and more enjoyable time on the water.

**Highlights:** Accurate marine weather forecasts, Wind, wave, and current data, Weather Routing for optimal routes, Departure Planning summaries, High-resolution forecast maps, Live wind observations and webcams, Weather alerts

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic - Monthly | $6.99 | per month |
| 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 |

**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


### Swell Signal

[App page](https://appshunter.io/ios/app/swell-signal/id6809098907)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alerts | $5.00 | per month |
| Supporter | $10.00 | per month |
| Patron | $20.00 | per month |


## Frequently asked questions

### Is PredictWind free?

PredictWind is free to download, with in-app purchases available.

### Is Swell Signal free?

Swell Signal is free to download, with in-app purchases available.

### Do PredictWind or Swell Signal have ads?

Neither PredictWind nor Swell Signal shows ads.

### Which is updated more often, PredictWind or Swell Signal?

PredictWind ships an update every 9 days, and Swell Signal every 2 days. Most recently, PredictWind was updated on November 6, 2026 and Swell Signal on October 31, 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.*