Launchmeter vs 测车速

Launchmeter turns your iPhone into a performance meter. Find a safe, open space and measure your car's 0-60 mph time with one tap. ACCELERATION TIMING & SPLITS • 3-second countdown, then timing starts automatically when you pull away • Time several runs at once — 0-30, 0-60 and 0-100 mph — and set your own targets • Every split is compared with your personal best: green when faster, red when slower GPS + MOTION-SENSOR FUSION • Speed fuses GPS with your iPhone's accelerometer and gyroscope: accurate GPS gets more weight, the sensors fill the gaps between fixes • The launch moment is detected by the accelerometer, so the start isn't delayed by GPS updates • Hand shakes and road bumps are filtered out, so readings stay steady EVERYTHING AT A GLANCE • Big three-digit speed and a segmented speed bar • Friction circle for longitudinal and lateral G, plus a live G-force trace • Grade meter — tap to zero • Local temperature, humidity and pressure from Apple Weather, plus your iPhone's barometer RUNS & ROUTES SAVED • Speed and G-force traces, splits and route are saved on your iPhone for every run • Drag across the charts to replay any moment • Routes keep recording with the screen locked LAUNCHMETER PRO (OPTIONAL, ONE-TIME PURCHASE) • Weather-corrected times: air density, density altitude and SAE J1349 correction so runs compare fairly across seasons and altitude • Export CSV data and GPX tracks • Share cards with your splits and speed trace • Multiple cars: log and compare runs per car Everything else stays free forever. PRIVACY Your runs stay on your iPhone and are never uploaded. Location is only used to measure speed, record routes and look up local weather. SAFETY Only test on closed courses or where it's safe and legal. Obey traffic laws and never use your phone while driving. Continuous GPS use during a run increases battery drain. Results depend on GPS signal and phone mounting and are for reference.

测车速 APP 是专为用户打造的车载测速与性能测试工具，依托设备硬件传感器与 GPS 技术，提供专业、直观、安全的车速监测与车辆性能测试服务，满足日常测速与性能测试需求。 主要功能： 【实时测速定位功能】 借助高精度 GPS 信号，实时显示车辆行驶速度，支持公里 / 英里单位切换，同步统计行驶里程、显示航向方位，让你随时掌握行驶状态，出行更安心。 【车辆性能测试功能】 毫秒级自动计时 0-100km/h 加速成绩，实时监测车辆加速、刹车、过弯的 G 值变化，精准呈现车辆性能数据，帮你直观了解爱车动力表现。 【可视化仪表盘功能】 搭载经典机械、F1 赛车、赛博朋克、极简新能源四大主题界面，风格多样可自由切换，打造专属炫酷驾驶仪表盘，提升使用体验。 【驾驶辅助安全功能】 支持 HUD 抬头显示投影模式，可自定义车速红线警报，超速时自动红光提醒，兼顾便捷与安全，让驾驶更稳妥。 【数据统计记录功能】 自动记录行程最高时速，剔除静止时间计算真实平均时速，完整留存驾驶数据，便于查看与复盘。 这款功能全面、操作简单的测速工具，能为你带来专业便捷的使用体验，赶紧下载体验吧！ 【VIP会员自动续订说明】 订阅周期：1周（VIP会员连续包周）。 付款：用户确认购买并付款后记入iTunes账户。 取消续订：如需取消续订，请在当前订阅周期到期前24小时之前手动在iTunes/Apple ID设置管理中关闭自动续订功能。 续订：苹果iTunes账户会在到期前24小时内扣费，扣费成功后续订周期顺延一个订阅周期。 隐私政策：http://xnkj.xiaonietx.top/account/avadakedavraa/all/D6Oo0r9SDyzNc09Q5LgBLJ6LVecTY4prby.html 用户服务协议：http://xnkj.xiaonietx.top/account/avadakedavraa/all/hEneyG2V1eN.html