# AnemoTracker vs Speed Tracker mach4

The clearest difference is rating: Speed Tracker mach4 at 3.7 against AnemoTracker's 1.6. Speed Tracker mach4 also leads on review sentiment (50% vs 17%) and iOS requirement (9 vs 13.0). AnemoTracker's advantage is ratings volume (18 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Speed Tracker mach4 holds the better App Store score, 3.7 against 1.6. That said, the two scores are not equally well evidenced: AnemoTracker has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 17% of AnemoTracker's written reviews are positive against 50% of Speed Tracker mach4's.

AnemoTracker ships an update every 3 weeks, Speed Tracker mach4 every 6 weeks. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | AnemoTracker | Speed Tracker mach4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (18 ratings)](https://appshunter.io/ios/app/anemotracker/id928168290/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/speed-tracker-mach4/id6446348164/reviews)** |
| Number of ratings | **18** | 3 |
| Positive reviews | 17.2% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 74 MB | 78 MB |
| Requires iOS | 13.0 | **9** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Calypso Instruments](https://appshunter.io/developer/928168289) | [nVisti](https://appshunter.io/developer/1058574940) |

## What reviewers say

### AnemoTracker

[App page](https://appshunter.io/ios/app/anemotracker/id928168290)

This app connects to a Bluetooth anemometer to display true and apparent wind data on your smartphone. It allows users to save their sailing or wind sports tracks with integrated wind measurements. Continued GPS use may impact battery life.

**Highlights:** Bluetooth anemometer connection, True Wind display, Apparent Wind display, Track saving with wind data, GPS integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Speed Tracker mach4

[App page](https://appshunter.io/ios/app/speed-tracker-mach4/id6446348164)

Measure the speed of objects using Doppler radar technology. This app accurately tracks speeds from 250 to 1250 m/s with precision better than 0.1%. Available on various Apple devices.

**Highlights:** Doppler radar speed measurement, Speed range: 250-1250 m/s, Accuracy better than 0.1%, Supports Apple Watch, iPhone, iPad, iPod

**In-app purchases:** none


## Frequently asked questions

### Is AnemoTracker free?

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

### Is Speed Tracker mach4 free?

Speed Tracker mach4 is free to download, with no in-app purchases.

### Which has better reviews, AnemoTracker or Speed Tracker mach4?

Speed Tracker mach4 is rated higher. AnemoTracker averages 1.6 out of 5 from 18 ratings, while Speed Tracker mach4 averages 3.7 from 3 ratings.

### Do AnemoTracker or Speed Tracker mach4 have ads?

Neither AnemoTracker nor Speed Tracker mach4 shows ads.

### Which is updated more often, AnemoTracker or Speed Tracker mach4?

AnemoTracker ships an update every 3 weeks, and Speed Tracker mach4 every 6 weeks. Most recently, AnemoTracker was updated on October 16, 2026 and Speed Tracker mach4 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.*