Stay running. Not just keep running.
The mobility and strength work you know you should be doing, in 13 minutes a day. Built around how runners actually get injured.
For runners
The niggles you've learned to live with
You know that thing you've been ignoring for six months? Yeah, that one.
Runner's knee
Patellofemoral pain. Usually a hip strength issue, never a knee issue. Stretching the IT band doesn't fix it.
Tight hip flexors
From sitting all day then running. The number one cause of low back and knee issues in runners over 30.
Achilles or plantar fascia
Calf tightness, ankle range, and load management. Loosn screens all three and builds the plan.
The pace plateau
When you can't get faster no matter the miles. Usually a strength and mobility ceiling, not a fitness one.
Three steps. Thirteen minutes.
1Download Loosn
Get the app on your phone and meet Kai. Kai builds your Movement Profile and matches you to the right programme.
2Meet your AI physio
Kai adapts every session to your pain, sleep & energy. Slept badly? Gentler flow. Feeling strong? Kai pushes further. Like a physio who knows you.
3Move and improve
13 minutes a day. Exercises with real-time form correction, breathwork, and pain education. Watch your pain trend drop week by week.
Built around how runners actually get injured
Pre-run primers, post-run cooldowns
Five-minute dynamic warm-ups before, ten-minute recovery flows after. Slots around your training.
Strength work without a gym
Hip strength, single-leg work, core stability. Three sessions a week, no equipment beyond a band.
Kai reads your runs
Connect Strava or Garmin and Kai sees your mileage, pace, and effort. Recovery on hard days, mobility on rest days.
Marathon-aware mode
n peak weeks, Loosn reduces intensity and pushes recovery instead. Your plan and your programme stop fighting each other.
Your movement profile
Everyone gets a profile. Yours is here.
After a 2-minute quiz, Loosn places you in one of nine Movement Profiles. The profile decides your programme, your daily sessions, and how Kai talks to you.
The Active Optimiser
You move. Your problem isn't motivation, it's that you keep hitting the same ceiling because the mobility and strength work isn't getting done. Loosn fixes that.
- -68%Injury rate vs runner baseline
- +9%Average pace improvement at 12 weeks
- 92%Still running consistently after 6 months
- -68%Injury rate vs runner baseline
- +9%Average pace improvement at 12 weeks
- 92%Still running consistently after 6 months
People like you, moving again.
Pain 7→2 in 6 weeks“I'd tried physio, chiropractors, YouTube exercises. Nothing stuck. Kai adapts to how I'm feeling each day — that's the difference”
Sarah Mitchell 
Form score +19pts“Skeptical about an app replacing my physio. But the movement correction is genuinely impressive. My PT confirmed my form has improved significantly.”
James Koroma 
86% adherence“The daily check-ins keep me accountable without being annoying. With a baby, 13 minutes is all I can give. It's enough”
Priya Laghari
Your questions, answered
Does Loosn replace strength training?
It replaces the strength work most runners aren't doing. If you already lift twice a week, Loosn supplements with mobility. If you don't, it covers the essential runner-specific strength work.
Can it integrate with Strava?
Yes. Loosn reads your runs and adapts your daily session. Hard run yesterday means recovery today. Rest day means mobility focus.
I'm in marathon training. Can I add this?
Yes. Marathon-aware mode reduces session intensity in peak weeks and pushes mobility and recovery instead.
What if I'm currently injured?
Tell Kai. Loosn switches to rehab mode with a programme specific to your injury, and won't push you back to running before your body is ready.
Not quite you?
Loosn is built for your life.
The work between the runs is the work.
£9.99 a month. First 14 days free. Built with women's health physiotherapists.