# Speed Tracker mach4 vs Impact Scoring

The clearest difference is review sentiment: Impact Scoring at 100% against Speed Tracker mach4's 50%. Impact Scoring also leads on rating (4.9 vs 3.7) and update cadence (every 8 days vs every 6 weeks). Speed Tracker mach4's advantage is iOS requirement (9 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Impact Scoring holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: Impact Scoring has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Speed Tracker mach4's written reviews are positive against 100% of Impact Scoring's.

Speed Tracker mach4 ships an update every 6 weeks, Impact Scoring every 8 days. The most recent releases landed on June 1, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Speed Tracker mach4 | Impact Scoring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/speed-tracker-mach4/id6446348164/reviews) | **[4.9 (18 ratings)](https://appshunter.io/ios/app/impact-scoring/id6702021327/reviews)** |
| Number of ratings | 3 | **18** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Free | Free |
| Size | 78 MB | 64 MB |
| Requires iOS | **9** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [nVisti](https://appshunter.io/developer/1058574940) | [Impact Scoring](https://appshunter.io/developer/1769600462) |

## What reviewers say

### 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


### Impact Scoring

[App page](https://appshunter.io/ios/app/impact-scoring/id6702021327)

This application enhances precision shooting with real-time scoring and detailed analytics. It provides tools for shooters of all skill levels and live video coverage to track performance and refine skills.

**Highlights:** Real-time scoring, Detailed analytics, Live video coverage, Performance tracking, Skill refinement tools, Community connection

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

**In-app purchases:** none


## Frequently asked questions

### Is Speed Tracker mach4 free?

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

### Is Impact Scoring free?

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

### Which has better reviews, Speed Tracker mach4 or Impact Scoring?

Impact Scoring is rated higher. Speed Tracker mach4 averages 3.7 out of 5 from 3 ratings, while Impact Scoring averages 4.9 from 18 ratings.

### Do Speed Tracker mach4 or Impact Scoring have ads?

Neither Speed Tracker mach4 nor Impact Scoring shows ads.

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

Speed Tracker mach4 ships an update every 6 weeks, and Impact Scoring every 8 days. Most recently, Speed Tracker mach4 was updated on June 1, 2026 and Impact Scoring on September 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.*