A coach that adapts
to your run.
Runsei is an AI running coach that builds a plan around your life and reshapes it as you go. We’re building it now, in private testing — public early access is coming.
One coach, the whole loop.
Plan, run, analyse, adjust — Runsei covers the full cycle of coached training, and keeps every piece honest about what your running actually shows.
A coach you talk to
Talk to your coach like a person. It plans, explains the why, logs your runs, and proposes changes — you approve them.
Plans that adapt
A structured plan built for your goal, your days, and where you’re starting from — reshaped when life gets in the way.
Intelligent insights
Morning readiness, training load, zones, and race predictions — read from your real running and explained in plain language.
Every run, understood
Your runs sync in and are matched against the plan. The coach sees how the session actually went — and adjusts what comes next.
Sessions your watch can run
Workouts are structured — warm-up, reps, targets — not paragraphs. Built to go with you on the run, step by step.
Your data, in the EU
Built in Denmark. Your training data lives in the EU — including an EU-only mode that runs the coach on Mistral — and you stay in control of what you connect and share.
…and more underneath — the methodology is public. Read how Runsei works →
Built by a runner who needed it.
I’m Andreas — an engineer and a runner, training around a full work and family life in Denmark. I was also born with a club foot, so adjusting has never been optional for me: the asymmetry brings injuries, small kids bring weeks of illness, and every serious plan I followed broke the same way — life intervened, and the plan didn’t care.
I’ve tried most of the running apps, and each fell short somewhere. A plain AI chat falls shortest: it can’t hold a plan’s structure or stay consistent from one answer to the next. Runsei is the coach I wanted instead — it keeps your plan as real structure, watches how the training actually goes, asks what happened, and reshapes it around reality. Conservative by default, honest when it matters. It proposes; you decide.
And it’s built to serve you, not a feed. No community, no streaks — just making you better and more effective toward your goal, whatever it is. That’s why it tracks how your plan is executed and measures your progress and response along the way.
Andreas Schmidt · Founder, Improva Labs · sub-35 10K
Join the waiting list.
Runsei is in private testing with a small group. Join the list to hear the moment we launch — and raise your hand if you’d like to be one of the first beta testers.