# PredictWind Race Tracker vs GPSlogger Kalman

The clearest difference is price: PredictWind Race Tracker at Free against GPSlogger Kalman's $3.99. PredictWind Race Tracker also leads on iOS requirement (15.6 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

PredictWind Race Tracker is free to download; GPSlogger Kalman costs $3.99 up front. PredictWind Race Tracker sells 2 one-off in-app purchases and GPSlogger Kalman sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PredictWind Race Tracker ships an update every 6 weeks, GPSlogger Kalman monthly. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | PredictWind Race Tracker | GPSlogger Kalman |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/predictwind-race-tracker/id569052528/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 15 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [PredictWind Limited](https://appshunter.io/developer/477048590) | [Almansor Kerroum](https://appshunter.io/developer/1521553556) |

## What reviewers say

### PredictWind Race Tracker

[App page](https://appshunter.io/ios/app/predictwind-race-tracker/id569052528)

This app enables yacht race participants to send GPS tracking data for live viewing by spectators or event organizers. You can also set up personal tracking and share a link for friends to follow your progress in real-time. The app offers race replay functionality for strategy evaluation.

**Highlights:** Live GPS tracking for races, Spectator viewing mode, Personal tracking with shareable link, Real-time progress updates, Race replay for strategy analysis, Safety monitoring for organizers

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Tracking for 12 months | $2.99 | one-time |
| Unlimited Tracking for 3 months | $2.99 | one-time |


### GPSlogger Kalman

[App page](https://appshunter.io/ios/app/gpslogger-kalman/id1521553554)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


## Frequently asked questions

### Is PredictWind Race Tracker free?

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

### Is GPSlogger Kalman free?

GPSlogger Kalman costs $3.99, and also offers in-app purchases.

### Do PredictWind Race Tracker or GPSlogger Kalman have ads?

Neither PredictWind Race Tracker nor GPSlogger Kalman shows ads.

### Which is updated more often, PredictWind Race Tracker or GPSlogger Kalman?

PredictWind Race Tracker ships an update every 6 weeks, and GPSlogger Kalman monthly. Most recently, PredictWind Race Tracker was updated on October 5, 2026 and GPSlogger Kalman on October 15, 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.*