Log Dyno vs dragy·Lap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Log Dyno
This app analyzes your car's datalog files to measure torque and horsepower using your mobile device. It provides detailed analysis, recommends optimal gear shifts, and allows comparison of multiple measurements.
- Measure torque and horsepower from datalogs
- Virtual dyno analysis
- Optimal gear shift recommendations
- Compare multiple measurements
- Supports various datalog file formats
- Customizable vehicle data input
Read full descriptionHide full description
Measuring your car's torque and horsepower has never been easier, now that you can do it with the help of your mobile device and this digital Dyno. You just need to open your datalog of a pull, and Log Dyno will do the rest. You can send your CSV file from your email, browser, or any app to Log Dyno which will Open the datalog from the app right away and give you a measurement, or you can save your CSV file to the Log Dyno folder in your Files app, for easy access from the in-app file browser. You can use any CSV or MSL file that contains RPM data which is needed to accurately measure Horsepower and Torque. From the torque curve and gear ratios, the app will also recommend optimal gear shift points for each gear to ensure maximum acceleration. This makes sure you know when to shift, so you always have the most possible power at the wheels. Corrections: ● Uncorrected ● SAE J1349 ● STD ● DIN 70020 ● ISO 1585 Power Units: ● WHP ● BHP ● PS ● KW Torque Units: ● LB-FT ● NM Either at the wheels or at the crank Compare multiple measurements! You can save each one of your Dyno measurements, and compare them, or just analyze them interactively. What datalog files can be used? ● JB4 ● MHD ● ProTool ● COBB ● MegaSquirt ● ProTool ● Bootmod3 ● and any other CSV file This is the easiest way to have your torque and horsepower measured with a virtual dyno using only your mobile phone and your datalog. You can see if your mods or tune work right away, and compare them. Log Dyno has been compared to multiple real life dyno sheets, and measurements were spot on, with multiple different vehicles How does it work? #1. Datalog your vehicle Take the log just like a dyno pull, in one given gear, from low rpm to high rpm. Try to avoid wheelspin as it can cause spikes in the graph. #2. Set up your vehicle data The dyno app requires some data about your vehicle. You’ll be asked to set values for the following: ● Car Name ● Weight ● Tank Capacity ● Tire Size ● DT% ● Drag Coefficient ● Frontal Area #3. Share the results! You can share your results right from the virtual dyno measurement page to basically any app or post it to any social network or email it. Of course, you can just save the results in your phone gallery too. How accurate is the dyno measurement? If you have set your vehicle data correctly, the results our dyno app gives will be the same as the results a real dyno will give you. Also, keep in mind that wheelspin may result in spikes in the graph. If you are unable to avoid it, you’ll still get accurate results, you just need to ignore the spikes. The best thing about our dyno app is that you can see right away how your mods work after datalogging. Now, you don't have to go to the dyno if you want to measure any small modification or just never had your car's power measured. You can see right away how your mods or tune work after datalogging. You can dyno unlimited times and unlimited vehicles for the fraction of the price of a dyno measurement. You have to set your car up, how much it weighs, its tire size, the gear ratios, and also what your car drag coefficient and frontal area are, which the app will help in determining. After specifying for which gear you had the datalog taken and specifying the driver, passenger, and possible cargo weight, you can open the CSV or MSL file. Based on your car data and environmental values, the app generates a torque and horsepower curve, which you can analyze. The app also points out the peak values, and you will be able to see at what rpm you made the most torque and the most power. If you have any questions feel free to send an email: profisoftgames@gmail.com
dragy·Lap
This app acts as a next-generation GPS lap timer, compatible with various Dragy devices. It offers real-time predictive lap timing, dual-camera video recording with data overlays, and detailed analysis tools. Compete on leaderboards and share your best laps instantly.
- Real-time predictive lap timing
- Dual camera video recording & overlay
- GoPro & DJI OSMO Action support
- 3D track replay
- Lap comparison tools
- VBO file export
- Global leaderboard
Read full descriptionHide full description
Dragy Lap is a high‑performance GPS‑based next‑generation lap timer, compatible with Dragy Pro (25 Hz), Dragy DRG70/DRG70‑C (25 Hz), and Dragy DRG69 (10 Hz) device. Go to the track with real-time predictive laptiming. Dual camera recording, video overlay with speedometer, lap time and 3D map. Instantly share the best lap and moment to 3rd party social media. Get verified lap time on the leaderboard. Pair the App with your Dragy device to start performance tracking. Key Features: • Real-Time Predictive Lap Timing See live delta vs. reference lap while you drive, with precise timing up to 25Hz. • Dual Camera Video Recording & Overlay Record front and rear camera footage with overlays showing speed, G-force, lap times, and a dynamic 3D map. • GoPro & DJI OSMO Action Support Import GoPro or DJI OSMO Action 4 footage and automatically sync with GPS and performance data overlays. • 3D Track Replay Review your racing line and performance with interactive 3D replays. • Lap Tool & Comparison Compare laps in detail with side-by-side analysis tools. • VBO File Export Export your session data as a .vbo file for professional analysis in Circuit Tools or other software. • Leaderboard Submit your best lap times to the Dragy Lap Leaderboard and compete with racers worldwide. • Events Join special events and challenges with exclusive rankings and shared leaderboards. • Instant Social Sharing Create highlight cards and share directly to Instagram, Facebook, or WhatsApp. Ready to level up your laps? Download Dragy Lap today and discover what your vehicle—and you—can really do. **Note: Hardware Required: a Dragy device is required to use this App. Dragy is available on www.goDragy.com
Screenshots
Verdict
The clearest difference is price: dragy·Lap at Free against Log Dyno's $13.99. dragy·Lap also leads on rating (5.0 vs 3.4) and review sentiment (45% vs 15%). Log Dyno's advantage is chart position (#128 vs unranked) and ratings volume (10 vs 2). On 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
dragy·Lap is free to download; Log Dyno costs $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.
dragy·Lap holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Log Dyno has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 15% of Log Dyno's written reviews are positive against 45% of dragy·Lap's.
Log Dyno ships an update every 4 months, dragy·Lap fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Log Dyno | dragy·Lap |
|---|---|---|
| Price | $13.99 | Free — better |
| Rating | 3.4 (10 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 15.4% of reviews | 45.5% of reviews — better |
| Number of ratings | 10 — better | 2 |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #128 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 128 MB | 332 MB |
| Age rating | 4+ | 4+ |
| Developer | Adam Keninger | Harbin Qirui Technology Company With Limited Liability. |
Customer experience
Log Dyno
dragy·Lap
In-app purchases
Log Dyno
No in-app purchases
dragy·Lap
No in-app purchases









