# RainGuRU vs Windmaster

The clearest difference is in-app purchases: RainGuRU at none against Windmaster's 2. RainGuRU also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.0). Windmaster's advantage is update cadence (fortnightly vs every 13 months). On price and ads there is nothing between them.

Both are free to download. Windmaster sells 2 in-app purchases, starting at $1.99 per month. RainGuRU asks for nothing beyond the download.

RainGuRU ships an update every 13 months, Windmaster fortnightly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | RainGuRU | Windmaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/windmaster-wind-and-wave/id6774912435/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 22 MB | 26 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HKV lijn in water](https://appshunter.io/developer/955836075) | [Swipe Up B.V.](https://appshunter.io/developer/1895599306) |

## What reviewers say

### RainGuRU

[App page](https://appshunter.io/ios/app/rainguru/id6465896256)

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

**In-app purchases:** none


### Windmaster

[App page](https://appshunter.io/ios/app/windmaster-wind-and-wave/id6774912435)

This app provides detailed wind, wave, and tide forecasts for water sports enthusiasts. It allows users to compare multiple global forecast models, view live wind data from nearby stations, and receive personalized gear recommendations. Get alerts for optimal conditions and discover new spots worldwide.

**Highlights:** Masterforecast for accurate spot predictions, Global forecast model comparison, Live wind data with 6-hour trend, Personalized kite/sail size recommendations, Real tide curves, Wind alerts for optimal sessions, Interactive wind map

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yummy Pro Monthly | $1.99 | per month |
| Windmaster Pro Yealry | $8.99 | per year |


## Frequently asked questions

### Is RainGuRU free?

RainGuRU is free to download, with no in-app purchases.

### Is Windmaster free?

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

### Do RainGuRU or Windmaster have ads?

Neither RainGuRU nor Windmaster shows ads.

### Which is updated more often, RainGuRU or Windmaster?

RainGuRU ships an update every 13 months, and Windmaster fortnightly. Most recently, RainGuRU was updated on October 3, 2026 and Windmaster on October 1, 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.*