Chronograph Log vs Speed Tracker mach4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chronograph Log
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.
- 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
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Chronograph Log was developed to record your bullet velocities, from your Chronograph, onto your iOS device. No more writing everything down on a pieces of paper to be lost in your range bag. When your friends ask about the loads you are using, you can pull out Chronograph Log and give them accurate info instead of guessing. Send them an email or message on the spot. Share your favorite loads via eMail, Facebook and more. Chronograph Log was primarily developed for USPSA IPSC and IDPA, where Minor and Major Power Factors are very important. It will color code those entries based on their velocities. Note that the Power Factors can be ignored if you are tracking rifle loads or don’t care about Power Factors. Note: This application is not a chronograph. You will need to enter readings from your chronograph into the Chronograph Log app. • Define: Bullets, Guns and Powder in the database. • Record velocities for each round from your chronograph. • Automatically calculate Average, Min and Max velocities. • Color coding to show each velocity’s Power Factor. • Export full tables to Mail. • Export favorite loads to Messages, Mail, Twitter or Facebook. • Backup / Restore to Dropbox. • Bluetooth integration with Competition Electronics "ProChrono Digital" using their "Digital Link" module.
Speed Tracker mach4
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.
- Doppler radar speed measurement
- Speed range: 250-1250 m/s
- Accuracy better than 0.1%
- Supports Apple Watch, iPhone, iPad, iPod
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The speed Doppler radar cover 250 to 1250 m/s ( 820 - 3940 fps ) speed range with an accuracy better than 0.1 %
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Chronograph Log | Speed Tracker mach4 |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (3 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 66.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 10 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.0 | 9 — better |
| Further details — not scored | ||
| Size | 22 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | On-Core Software LLC | nVisti |
Customer experience
Chronograph Log
Speed Tracker mach4
In-app purchases
Chronograph Log
No in-app purchases
Speed Tracker mach4
No in-app purchases
Questions
Is Chronograph Log free?
Is Speed Tracker mach4 free?
Which has better reviews, Chronograph Log or Speed Tracker mach4?
Do Chronograph Log or Speed Tracker mach4 have ads?
Which is updated more often, Chronograph Log or Speed Tracker mach4?
Other comparisons
