Get stronger in 15 minutes,at home
No gym. No gear. 6–12 exercises that change every morning and get harder as you do.
Do today's 15-minute workoutReal wins from members
Why this is hard
Getting stronger was never the hard part. Sticking with it is.
It's almost never willpower. Three things quietly end most fitness plans — and every one of them is fixable.
Too much friction
The gym, the gear, the 45 minutes you don't have. Every barrier is one more reason to skip today.
No plan for today
"What do I even do?" Decision fatigue ends more workouts than soreness ever did.
No proof it's working
You can't see yourself getting stronger, so you stop believing it is — and you stop.
fitn3s fixes all three. Here's how. ↓
Daily plans
Open the app. See today's workout. Do it.
No meal logs. No watch to sync. No 12-week program to set up first. You get one short bodyweight plan built around your goals, and the exercises keep changing so it never gets stale.
Today's Workout
6 exercises · ~15 min
Push-Ups
chest12 reps
Squats
legs20 reps
Glute Bridges
glutes15 reps
Mountain Climbers
full body30s
Plank
core45s
Lunges
legs10 per side reps
Fitness levels
40 levels. Zero equipment.
4 minutes — push-ups, a wall sit, squats — gives you a number from 1 to 40. Retest each month and watch it go up.
The Enthusiast
Showing up before the results do
Upper Body
L10
push-ups
Lower Body
L14
squats
Wall Sit
L7
endurance
Streaks & badges
The streak nags you so you don't have to.
14 days in and you stop arguing with yourself. It's the Duolingo trick pointed at push-ups: a daily streak and 20+ badges give you a reason to show up on the days you don't feel like it — which is exactly when it counts.
day streak
Best
21
First Fit
Early Bird
Week Warrior
Committed
Globe Trotter
On Fire
Perfect Week
Night Owl
The science
Built on what actually works.
Not vibes. Not trends. Every design decision in fitn3s is grounded in peer-reviewed exercise science.
Hit a target 3 times and it goes up on its own
That's progressive overload — the one method proven to build strength. You get stronger without thinking about it.
It takes 66 days for a workout to feel automatic
Streaks and daily plans carry you across that line, so you keep going long after week one.
Every plan starts from your real fitness
A four-minute test (push-ups, a wall sit, and squats) sets your starting point, so day one feels doable and never pointless.
From the founders
We built it for ourselves first.
fitn3s started as the workout we wanted between two kids, work, and travel. We do it every day.
“Weights and machines were never my thing, and I already walk my 10,000 steps. I just wanted simple strength on top, without a gym. A few minutes next to the bed each morning, and I'm already feeling the progress with each exercise.”
Michael
Co-founder
“I love yoga, pilates, the gym, all of it. I just wanted one thing for everyday life that survives a busy week and travelling with the kids. Doing the same few exercises got old fast. Now the plan is different every morning, and I genuinely look forward to opening it.”
Martina
Co-founder
Your first workout is waiting.
Done before your coffee goes cold. Built in Wolfenbüttel by Michael and Martina, two parents who wanted fitness that fits real life. We use it every day ourselves.
Do today's 15-minute workoutAlready have an account? Log in →