SpeedLab35: GPS Drag Timer

Prove your car's real 0-60, 0-100, or quarter-mile time with GPS-verified accuracy — no guesswork, no phone tricks. SpeedLab35 turns your phone into a professional-grade acceleration and drag timer, then hands you back a ready-to-post video with the data burned right into the footage.

GPS-VERIFIED, NOT SELF-REPORTED
Every run is backed by live GPS satellite data, accuracy readouts, and G-force sensing — not a stopwatch guess. And because a downhill run can secretly inflate your numbers, SpeedLab35 checks road conditions automatically and flags the steepest grade on your route, with the exact location. If your run was flat, you'll know. If it wasn't, you'll know that too.

TEST YOUR WAY
• Speed mode — set any custom range: 0-60 mph, 0-100 km/h, or anything in between
• Distance mode — 1/8 mile, 1/4 mile, 1 km, and 1 mile presets, drag-strip style
• Switch instantly between km/h and mph

EVERY RUN, ON VIDEO
SpeedLab35 records your run and hands you back a vertical 9:16 video, ready for TikTok, Reels, and YouTube Shorts — no editing needed:
• Live speed graph and G-force gauge overlaid on the footage as it happens
• A flight-recorder-style data strip (GPS accuracy, satellite count, altitude, timestamp, frame count) so anyone can verify the run was real
• A cinematic post-run recap: your time, speed curve, road conditions, split times, acceleration profile, and full run stats — all in one shareable clip

FREE TO START
3 full performance tests every day, free. Need more? Unlock unlimited testing with a single one-time purchase — no subscriptions, no recurring charges.

REQUIREMENTS
GPS and camera required. Android 8.0 or later.

Your speed, GPS-verified. Post it. Compare it. Worldwide.