DragTree vs OnlyFast.

"DragTree" is an app for practicing real-car drag racing. You can measure drag race times in places where timing equipment is unavailable. Times for 60 feet, 330 feet, 660 feet, 1000 feet, and 1/4 mile are measured using GPS. Starts are determined by looking at a Christmas tree displayed on the screen, just like in competitions. Response times are also measured. A front camera switch allows you to operate the start/stop function while wearing gloves. The front camera switch is especially useful when using this app on a motorcycle. Safety is always the first priority. When using on public roads, please obey the law. (How to Use) 1. Secure the iPhone (or GPS-enabled iPad) with DragTree installed to a stable location, such as the dashboard of your vehicle, where the screen is visible. For use on a motorcycle, secure it to the handlebars or fuel tank. 2. Tap the "Start" button on the home screen to display the Christmas tree screen. If you have not yet upgraded, an information dialog will appear. (Covering the front camera with your finger has the same effect as tapping the "Start" button. This is the front camera switch.) 3. Tap the "START/STOP" button on the Christmas tree screen to begin the countdown until the blue light on the Christmas tree lights up. Tapping the "START/STOP" button before the green light lights up will return you to the time before the countdown began. The "START/STOP" button can be controlled with the front camera switch. 4. Once the blue light comes on, do not move the machine until it is time to start moving. After the staging light comes on, the start timing check will begin. 5. When the green light comes on, it is time to start moving. Response time is measured, followed by all other measurements. A negative response time indicates a false start. The home screen will appear at 660 feet. 6. When the measurement is complete, the results will be displayed on the home screen. 7. To view previous results, tap the "＜ Prev" button. 8. You can share the currently displayed result using the "Share" button. (Settings) - On-screen driving lane selection (left, right) - Start method selection (PRO, FULL) - Select the time from staging light to amber light (Random, Fixed) - Set the countdown time until blue light turns on - Front camera on/off switch *Turn off if malfunction occurs in dark environments, etc. - Start sensor sensitivity selection *Can be adjusted if malfunction occurs frequently. (Changes not recommended) (Measurement Items) - 60 feet and 330 feet elapsed time and speed measurement - 660 feet, 1000 feet, and 1/4-mile elapsed time and speed measurement - Response time (RT) - RT+ET at 660 feet and 1/4-mile - 0-100km/h and 0-60mph acceleration time measurement (Notes) - Permission to use location information is required to use this app. - Permission to access the camera is required to use the front camera switch. - 1,000 measurement results are stored in memory. - Memorized measurement results will be deleted if DragTiming is uninstalled. - Cannot be used on iPads without GPS. - Operation may become unstable if the GPS signal or device reception sensitivity is low. - Measurements may not be accurate if the starting acceleration is too slow. - The developer assumes no responsibility for any accident, violation, loss or claims by third parties which may arise from the use of this app. Terms of Use: This application is provided under the Apple Standard End User License Agreement (EULA). https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

OnlyFast is the all-in-one racing setup and performance app built for drivers who want to get faster, stay organized, and make smarter changes at the track. Create detailed setup sheets, organize your information by race weekend and session, track adjustments from Hot Laps through the Main Event, and review how each change affected the car. Upload timing results, monitor performance trends, manage your race schedule, and keep important car and parts information in one place. OnlyFast is designed for racers across dirt oval, pavement oval, road racing, motorcycles, RC racing, and more. Key features include: • Digital setup sheets for your race car • Race weekends organized by session • Timing-screen scanning and result tracking • Performance summaries and position-change tracking • Setup comparisons between sessions • Race schedules, countdowns, and event planning • Car, parts, and maintenance information • Track-specific setup history • Setup sharing and PDF exports • Ask OnlyFast setup guidance based on your data and driver feedback Whether you are preparing for your first race or chasing wins every weekend, OnlyFast helps turn scattered notes, screenshots, and guesswork into a clear racing record you can use. Race smarter. Finish faster. OnlyFast.