Small software, built properly.
Byte-Sized Systems is an independent software company in Norway. We make a small number of apps and look after them ourselves — no ad networks, no data brokers, no growth team pushing features nobody asked for.
What we make
TrailForge
Trail and ultra training for iPhone.
A training app for runners whose races have climbing in them. Plan the route, plan the fuelling, and let synced activities match themselves to the sessions they fulfilled.
- Route planning with elevation, weather and daylight along the course
- Per-session carb, fluid and sodium targets, and a post-run fuel log
- Training plans with structured workouts, matched to what you actually ran
- Race and backyard-ultra planning, with crew sheets
- Two-way Garmin sync and Strava import
Free to download, with an optional Pro subscription. On the App Store in September 2026.
How we work
Fewer products, kept for longer.
We would rather ship one app that holds up on a mountain than five that demo well. Everything we build is written and maintained in-house, and we answer our own support email.
Contact
Get in touch.
Questions, press or partnerships — mats@bytesizedsystems.com. For anything about TrailForge specifically, contact@trailforge.run reaches the same desk.