Independent app studio

Apps worth
opening every day.

A small independent studio building beautifully simple apps for your Garmin watch, phone and the web - for runners, stargazers, birdwatchers and the dogs that drag them outside.

See the apps → Get in touch
The flagship

FrontRunner Live

Fair running challenges, live leaderboards and weekly ranked leagues on the web - scored on effort, not just distance. So anyone can win, not just the runner with the most miles.

  • Effort-based scoring - pace and consistency beat raw mileage
  • Live monthly leaderboards and weekly ranked leagues
  • Import from Garmin, Strava or a file - no app to install
Visit frontrunner.club →
FrontRunner Around the World route challenge on a live world map
FrontRunner global monthly distance challenge leaderboard
More from the studio

The rest of the lineup

Small, well-made apps for your Garmin watch and your phone - for stargazers, runners, birdwatchers and busy households.

Stargazer app icon

Stargazer Live

Tonight's sky at a glance on your Garmin - visible planets, ISS passes and moon phase, plus aurora and meteor-shower alerts.

On Garmin Connect IQ →
PacePulse app icon

PacePulse Live

A haptic cadence metronome for your watch - it buzzes to your target cadence and only nudges you when you drift. Run, row or ride.

On Garmin Connect IQ →
PetPacer app icon

PetPacer Live

A dog-walk tracker for your Garmin - distance, time and pace, plus the pees, poos, water and treats along the way.

On Garmin Connect IQ →
Fledge app icon

Fledge Coming soon

Learn to know birds by song and sight - bite-size daily lessons with spaced repetition. Like Duolingo, for birdwatching.

In the works
The Big Shop app icon

The Big Shop Coming soon

Say or paste a recipe and get a sorted shopping list back - an AI grocery sidekick with voice, pantry tracking and meal ideas.

In the works
The studio

A one-person studio that ships small, well-made apps - and actually uses them.

Sullisoft is the home for the things I build - led by FrontRunner, my running-challenge app on the web, alongside a growing family of smaller apps for your phone and watch. No bloat, no dark patterns; just focused apps that are a pleasure to open.

Each one starts as a problem I had myself, and ships when it's genuinely good.

Let's talk.

Ideas, feedback, or just hello -

tom.sullivan@sullisoft.dev