Aster is a live tracking and sharing platform for endurance sport — races, sportives, club meet-ups, and personal rides or runs. An athlete carries their phone; the people who care about them watch their live location move along the route in real time, on a map, from any browser. Afterwards, the ride lives on: results, a replay, and posts and photos the athlete can share with their followers.
It's built for four kinds of people:
- Athletes — carry the app to be tracked during an event, a club meet-up, or a personal Just Ride, then share the story afterwards.
- Spectators — friends, family and fans who watch live, follow the standings, and cheer from afar. For public events and shared rides, no account is needed.
- Clubs and teams — groups who ride together, run members-only rides, and keep a shared feed and route library.
- Event organisers — clubs and promoters who set up an event, distribute the route, run it on the day, and publish results.
Live tracking, in one minute
- An athlete taps Start in the app. Their phone begins recording GPS points as they ride or run.
- Those points stream to Aster, which moves the athlete's live position on the map and updates the event's live view.
- Spectators open the event page (or a shared ride link) in any browser and watch it unfold — current position, the trail so far, distance and time.
- When the athlete crosses the finish line (or taps Finish), their result is recorded and everything freezes at that moment.
Sharing, not just tracking
Tracking is half the product. The other half is what happens around it:
- Share links — when you set who can watch a Just Ride, Aster creates one live link anyone can open to watch you in real time, no account or install needed.
- Posts and photos — share updates before, during and after an event; comment, react and @mention.
- Replays — relive a finished event or ride as an animated playback.
- Route distribution — registering for an event downloads the route and map data to your phone, so navigation works even with no signal.
What makes it different
- It keeps working off-grid. Endurance events happen in places with no phone signal. An athlete can start and finish with no signal at all — the app records everything on the phone and catches up automatically when signal returns. See What happens when I lose signal?
- Watching is open. For public and unlisted events — and any ride shared by link — spectators need no account, no install and no payment. See Watch an event live
- Safety features that are honest about what they do. Athletes have an Alert button that alerts the people watching their ride, and crash detection that can raise an Alert automatically. An Alert does not contact emergency services. It's an aid, not a rescue service. See Alerts and crash detection
What does it cost?
Almost everything is free, forever. Taking part in events, watching and spectating, following (as many people, teams and events as you like), and recording your own Just Rides never cost anything. Clubs don't pay a subscription either.
There are two things you can pay for, and both are bought in the app through the App Store or Google Play:
- Aster Plus — an individual membership. It unlocks full membership of a club: the roster, club chat and threads, RSVPs and meet-ups. You also need it to join a club as its fourth-or-later member. Billed monthly or annually (annual works out cheaper), and you manage or cancel it in the App Store or Google Play.
- Event Organiser — a monthly plan for people running events. Tiers are sized by how many riders each event can register (around 100, 500 or 1,000 per event), with a larger enterprise option if you need more.
Prices change as the product grows, so we don't list numbers here — see the current plans at aster-track.com/pricing.
Where to next
- Brand new? Create an account and read Key concepts.
- Here to ride or run? Head to For athletes.
- Here to watch? Head to For spectators.
- Running an event? Head to For organisers.
- In a club? Head to Teams and clubs.