Signalyst vs TDriveViewer

Signalyst connects drivers, cyclists, and pedestrians to transportation infrastructure. It improves travel efficiency by providing traffic light and crosswalk information, including time-to-green countdowns and advisory speeds. It improves travel safety by notifying users of potential vehicle and pedestrian conflicts. It runs in the background and uses Live Activities to provide real-time updates based on location. Signalyst only supports specific regions in North America.

A driver's-seat dashboard that links your iPhone straight to the car over BLE. TDriveViewer connects your iPhone to a Tesla vehicle directly over Bluetooth (BLE). No Tesla account, no internet, no external dongle. See speed, gear, battery, media and destination on a single screen. ■ Key features • No account, no cloud — a direct BLE link; vehicle data stays between the car and your iPhone • Full dashboard — speed, gear, SoC, media and destination on one screen • Driving mode — rotate to landscape and a mount-optimized layout turns on automatically • Turn-by-turn guidance — Apple Maps by default, KakaoNavi optional. See route, traffic and ETA right on the driving screen • Charging mode — live input power, rate and estimated time to full while charging • Dark OLED theme — pure-black background built for night driving • Fully localized — Korean, English and Japanese ■ Why TDriveViewer • iPhone-first — designed for the driver's-seat iPhone experience • Read-only — sends no command to the vehicle (no unlock, no drive control) • Free, no ads, no in-app purchases ■ Compatibility • Vehicles: Tesla Model 3 / Y / S / X / CT • OS: iOS 18.6 or later (iPhone and iPad) • One-time pairing with the vehicle required (key card tap or phone-key authentication) ■ Guidance and location • Location is used only while turn-by-turn guidance (KakaoNavi) is active, and is sent to Kakao Mobility for route calculation. No other vehicle data leaves your device. ■ Please note • Do not stare at the screen while driving. The car's own instrument cluster always takes priority; values shown here are for reference. ■ Disclaimer TDriveViewer is a third-party app and is not affiliated with, endorsed by, or officially connected to Tesla, Inc. or its subsidiaries. Tesla and Model 3 / Y / S / X / CT are trademarks of Tesla, Inc., used here only to indicate compatibility.