RTK Helper vs Speedometer Lite

RTK Helper 是一款专业的高精度定位辅助工具，专为需要厘米级定位精度的专业用户设计。 核心功能 • 蓝牙连接 - 轻松连接各类RTK/GNSS接收机设备 • NTRIP客户端 - 内置NTRIP协议支持，实时获取差分改正数据 • 实时定位 - 显示经纬度、海拔、卫星数量、RTK状态等信息 • 精度指示 - 实时显示HDOP值和估算精度（米级） • 卫星信息 - 星空图和信号强度可视化显示 记录功能 • 兴趣点记录 - 一键保存当前位置坐标 • 轨迹记录 - 记录移动轨迹，支持RTK质量状态分段显示 • GPX导出 - 标准GPX格式导出，兼容Google Earth等软件 • 地图显示 - 实时查看位置和历史记录 实用工具 • 测距功能 - 测量两点间距离 • 面积计算 - 多边形面积测量 • 屏幕常亮 - 户外作业时保持屏幕不熄灭 • 预设管理 - 保存多组NTRIP服务器配置 适用场景 • 测量测绘 • 精准农业 • 无人机航测 • GIS数据采集 • 地质勘探 • 工程放样 技术说明 本应用需配合支持蓝牙SPP协议的RTK/GNSS接收机使用，并需要有效的NTRIP服务账号才能获取差分数据实现高精度定位。支持解析NMEA-0183协议（GGA、GSV等语句），兼容主流RTK设备。

SPEEDOMETER LITE — precision GPS instrumentation for everywhere you move. Track your speed with a beautifully designed dashboard that updates in real time. Whether you're driving, cycling, motorcycling, sailing, running, hiking, skiing, or just curious about your pace, Speedometer Lite delivers buttery-smooth, accurate telemetry on any kind of journey. ▸ REAL-TIME TELEMETRY See your current speed, altitude, and heading instantly. An advanced smoothing algorithm reduces GPS jumpiness while keeping the reading honest. ▸ WINDSHIELD HUD MODE Place your phone on the dashboard at night and the mirrored display reflects onto your windshield for safe, heads-up viewing without taking your eyes off the road. ▸ 15 STUNNING THEMES From minimal glass to cyberpunk neon, vintage chronograph to aviation tactical — find the perfect look for your style. Most themes include light and dark variants. ▸ TRIP RECORDING Start a session and automatically log your route, distance, duration, average speed, and top speed. Review your trips anytime in the history view, with detailed analytics and speed bands that reveal your patterns — perfect for drives, rides, runs, or sailing legs. ▸ AUTO-START & AUTO-STOP Hands-free trip recording — Speedometer Lite can begin a session when you start moving and end it when you stop, so you never miss a journey. ▸ SPEED LIMIT ALERTS Set your own speed limit and get instant visual and haptic warnings when you exceed it — fully offline. Or enable real-time, road-based limits (Pro) that detect the speed limit for the road you're on and warn you the moment you go over (requires an internet connection). ▸ CUSTOMIZABLE APP ICONS Match your home screen aesthetic with 11 alternate app icons. ▸ WORKS OFFLINE The speedometer, HUD, and trip recording need no internet — the app reads GPS satellites directly and works anywhere, even in airplane mode with Location Services enabled. (Real-time road-based speed limits require a connection.) ▸ PRIVACY FIRST Your trips and routes are stored locally on your iPhone. No account, no sign-up, and no ads. ▸ UNITS YOU PREFER Switch between km/h, mph, or knots. Altitude in meters or feet. 12 languages supported. Perfect for daily commuters, road trip enthusiasts, cyclists, motorcyclists, runners, hikers, sailors, skiers, and anyone who appreciates beautiful, functional design. ——— SPEEDOMETER LITE PRO Upgrade to Pro to unlock the complete experience — every theme, every app icon, unlimited trip history, full analytics with speed bands, real-time road-based speed-limit alerts, and Auto-Start & Auto-Stop trip recording. Or unlock everything forever with a one-time Lifetime purchase. • Payment will be charged to your Apple ID account at the confirmation of purchase. • If a free trial is offered, payment is charged to your Apple ID at the end of the trial unless the subscription is canceled at least 24 hours before the trial ends. • Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • Any unused portion of a free trial is forfeited when a subscription is purchased. • You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Privacy Policy: https://speedometerlite.app/privacy Terms of Use: https://speedometerlite.app/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/