# Chronograph Log vs Speed Tracker mach4

The clearest difference is price: Speed Tracker mach4 at Free against Chronograph Log's $3.99. Speed Tracker mach4 also leads on update cadence (every 6 weeks vs every 10 months) and iOS requirement (9 vs 12.0). Chronograph Log's advantage is rating (4.0 vs 3.7) and review sentiment (67% vs 50%). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Speed Tracker mach4 is free to download; Chronograph Log costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chronograph Log holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 67% of Chronograph Log's written reviews are positive against 50% of Speed Tracker mach4's.

Chronograph Log ships an update every 10 months, Speed Tracker mach4 every 6 weeks. The most recent releases landed on September 20, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Chronograph Log | Speed Tracker mach4 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/chronograph-log/id848380910/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/speed-tracker-mach4/id6446348164/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 22 MB | 78 MB |
| Requires iOS | 12.0 | **9** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [On-Core Software LLC](https://appshunter.io/developer/283621364) | [nVisti](https://appshunter.io/developer/1058574940) |

## What reviewers say

### Chronograph Log

[App page](https://appshunter.io/ios/app/chronograph-log/id848380910)

Record bullet velocities from your chronograph directly onto your iOS device. Easily share load data and track power factors for competitive shooting. This app helps you manage and analyze your shooting performance without manual note-taking.

**Highlights:** Record bullet velocities, Define bullets, guns, and powder, Automatic velocity calculations (Avg, Min, Max), Color-coded power factors, Export data via email and social media, Dropbox backup and restore, Bluetooth integration with ProChrono Digital

**Features:** Vision Pro support

**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 Chronograph Log free?

Chronograph Log costs $3.99, 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, Chronograph Log or Speed Tracker mach4?

Chronograph Log is rated higher. Chronograph Log averages 4.0 out of 5 from 3 ratings, while Speed Tracker mach4 averages 3.7 from 3 ratings.

### Do Chronograph Log or Speed Tracker mach4 have ads?

Neither Chronograph Log nor Speed Tracker mach4 shows ads.

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

Chronograph Log ships an update every 10 months, and Speed Tracker mach4 every 6 weeks. Most recently, Chronograph Log was updated on September 20, 2026 and Speed Tracker mach4 on June 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.*