GPS Race Timer vs AXL Alignment

Measure acceleration times such as 0–60 mph, 60–120 mph and 1/4 mile directly with your iPhone — accurately and without extra hardware. The app is designed so it doesn’t need to be operated while driving; you just set everything up beforehand while stationary. Measurements then start automatically — when the target speed is reached or when a start is detected. You can save results locally on your iPhone and, if needed, export them or transfer them to other devices. Preset timers: 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, 0 – 60 mph, 0 – 120 mph, 50 – 75 mph, 60 – 120 mph, 0 – 100 km/h, 0 – 200 km/h, 80 – 120 km/h, 100 – 200 km/h. All timers are, of course, fully adjustable. The free version measures up to two times per run. How to use the app: Check the timer settings on the start screen. If everything looks good, place your iPhone in the car where it has good GPS reception and is held securely, then start the acceleration test. You can adjust the timer configuration in the Settings screen (just tap the relevant timer). Then return to the race screen and follow the previous instruction. Optional PRO version (in-app purchase): 1. Up to four timers in parallel (instead of two) 2. Precise determination of elevation differences 3. Simulation of a Sportsman start and reaction-time measurement 4. No ad banners

Stop paying for alignment checks. Your iPhone already has the sensors. AXL turns your iPhone into a precision alignment tool. Hold it against each wheel and against your chassis, and AXL reads toe, camber, and how your rear axle actually sits on the car — the same angles a shop checks, in your driveway, in minutes. Why it matters Bad toe eats tires. A few tenths of a degree off and you're replacing rubber months early, or driving around with a pull you've learned to ignore. AXL shows you exactly where you stand, so you know whether that's a real problem or nothing to worry about — before you spend money finding out the hard way. How it works Three quick captures per wheel, walked in order: centerline, toe, camber. AXL tells you when each reading has settled and moves you to the next spot automatically. A full pass — all four wheels — takes just a few minutes. What you see Toe and camber for every wheel, plus front and rear axle totals How your rear axle's thrust line compares to the true chassis centerline A 3D view that exaggerates the angles so small readings are easy to see at a glance — the numbers on the cards are the real measurement Color-coded results: green means straight, yellow means it's worth adjusting, red means it's wearing your tires right now Track it over time Save tests to named vehicles, add a note like "before adjustment," and pull up any past test later. With two or more saved visits, AXL shows you exactly what changed — every wheel, every axle, side by side. What you need Any flat-sided iPhone case works. For the most accurate readings, our free 3D-printable case design (Soon available on our website) holds the phone perfectly flush against the wheel.