What makes a GPS speedometer easy to read? Building Speedo for Android

I'm the developer of Speedo, launching on Product Hunt on September 25. I built it around a simple need: seeing GPS speed and trip distance clearly, then reviewing the journey afterwards.

Speedo has digital and analogue displays, a mirrored windshield HUD, personal speed alerts and saved trip reports. Core speed tracking and recording work without mobile data, with location permission and a usable GPS signal. Trip history stays on the phone and no account is needed.

It's free with ads. Optional one-time Pro removes ads and adds GPX, KML and CSV exports; there is no subscription. Street-map tiles need internet. It doesn't provide turn-by-turn directions or detect posted speed limits.

I'd appreciate feedback on display readability and saved reports. For cycling or train journeys, what information do you actually want visible at a glance? Please try it only when it is safe to use your phone.

App and download: https://aaronsedna.com/apps/speedo/?utm_source=producthunt_forum&utm_medium=referral&utm_campaign=speedo_launch