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YYK is the workout app that calls you. Squats, lunges, burpees, push-ups. At random times, wherever you are. Random moves, random times.

Lazy f**k, get up.

0 reps · one call

Floor rookie

You fell for it. Good. Welcome to the first floor of your comeback.

How it works

It calls. You move. That's it.

YYK is the workout app that calls you: a few calls a day at random moments, inside the hours you pick, each one a set of about two minutes.

3 steps, 2 minutes

YYK · Incoming call 5 squats. Right now.

0 / 5 squats

1 It rings. At a random moment, inside the hours you picked. Even mid-scroll.

2 You do the set. Right where you are. Prop your phone up; the camera counts every rep.

3 You level up. Each call fills your daily goal. XP, levels and a streak that keeps you coming back.

What you get

It adds up.

A couple of minutes at a time, a few times a day. Miss a day? It still adds up. Here's a real year at your level.

press + to level him up

120 reps a day

Getting strong

= 0 reps a year

Gym pass or YYK?

€49.99 a month to feel judged for four minutes.

Excuses, answered

Go on. Hit me with your best excuse.

Tap an excuse. She's heard them all.

Fine. Where do I get it? On the App Store and Google Play . Free to start.

I don't have a gym.

Good. You don't need one. A floor and your phone. Every set is bodyweight.

I'm busy. Like, really busy.

A call takes about two minutes. Small enough to fit between anything.

I'll start Monday.

It doesn't care what day it is. It calls when it calls.

I'm not fit enough.

Your daily goal comes from your goals, not ours.

I'll get bored.

38 exercises, random sets, random times. Bored isn't really an option.

What if I miss a call?

It happens. Pick up the next one.

I'll just fake the reps.

Go on, try. TrueRep, the AI camera, counts every rep and catches the cheats. Watch people try

Is the camera recording me?

Fair question. Your camera page answers it in plain English. How your camera is used

How much is it?

Rookie is free. Pro is €4.99 and Elite is €7.99, a month . See the plans

Fine. Where do I get it?

On the App Store and Google Play . Free to start.

Pick your plan

Rookie is free. €0 It still calls.

Rookie costs nothing, and the calls start on day one. Pro is €4.99 and Elite €7.99 a month . Pro's first 14 days are on us.

one coffee ≈ 20 days of Pro

€0 forever €0.00 a day

€4.99 a month ≈ €0.16 a day

€7.99 a month ≈ €0.26 a day

Rookie The calls, from day one. Free.

Pro More of everything. 14 days on us, then €4.99 .

Elite Everything in Pro, plus what's coming next.

Calling . At a random moment, YYK calls with a quick set.

Answered . He picks up and looks out over the city. It’s ringing out there too.

Catching . One by one, the city picks up.

You’re next.

YYK is the workout app that calls you. At random times, with a quick set to do on the spot. Free to start, Pro has 14 days on us.

YYK sets you a daily goal, then sends challenges like incoming calls at random times, with a random number of reps. You do the reps, YYK counts them, and you progress.

How it works

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Your phone rings. You get stronger.

YYK is the workout app that calls you. At a random moment, inside the hours you pick: 5 squats, two minutes, hang up.

Since January.

You've had the plan since January. The shoes are still in the box. Every day, you meant to start later.

Hours. Goal. Answer.

Pick the hours it can call. Set a daily goal. When it rings, do the set right where you are.

TrueRep, the camera that counts your reps, keeps score. Two minutes, and you're back on the sofa.

You can't skip it.

It rings at a different moment every day, inside your hours. No time to talk yourself out of it.

Two minutes isn't nothing.

In 11 trials with 414 inactive adults, short bursts of exercise spread through the day improved their fitness, and 83% stuck with it.

Every call is a vote.

Day 1, you pick up because it rang. Around day 66, you pick up because that's who you are.

How it works.

Five things to know before your first call.

Busy? Snooze.

Missed it? No drama.

Goal hit. Streak up.

No half reps.

Every day, fresh.

YYK only rings inside the hours you picked. Outside them, your phone stays quiet.

5 squats moved to your next call. Nothing lost.

20 / 20 reps. Your streak grows by a day.

Only full reps count. That one costs you extra.

A fresh daily goal and new calls.

The next call is yours.

Free to start. Pick your hours and let it ring.

A day with YYK

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A day with YYK

One day. Four calls.

YYK calls at random times, inside your hours, with a two-minute set. Here's Friday. it gets awkward ↓

00 / 5 push-ups

Going up. Five floors, five push-ups. Done before the doors open.

Now ?! Yes, now. It only calls inside the hours you pick.

Team building. Two minutes, and it spreads. All the way to the yacht.

Not a proposal. Random calls, 38 moves. Tonight: 5 lunges.

Both ?! She downloaded it too. Now it's a competition.

She won. Her three to his five. XP, levels and streaks make it personal.

20 / 20. Four calls, two minutes each. Nobody went to a gym.

Your day, next.

YYK is the workout app that calls you. At random times, inside your hours, with a quick set to do on the spot, wherever your day is.

Workouts

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Made to measure.

No two YYK plans are the same. Yours is cut to your goal, your body and your day.

02 The move library

38 moves. Zero gym.

Core control.

1 Curl, then sit up

Every move YYK can call, all bodyweight. Your plan plays first. Pick a group, then flick through its moves.

03 How it works

From scan to first call.

The first time you open YYK, this is all it asks. Four steps, then your phone starts ringing.

Prop your phone up and hold still. It maps your height, your build and how you move.

Pick one of four. It suggests the muscles to start with. Change them any time.

Link Apple Health. Your steps and workouts count too , nothing to log.

A daily goal, split into short calls. You pick the hours, YYK picks the moment.

Custom built.

Your goal. Your level. Your day. It all clicks into place.

Your move.

A plan that fits you. Short calls that get you moving.

All 38 exercises

Push-ups

Chest, shoulders and triceps.

1. Straight arms, palms planted
2. Lower chest, keep one body line
3. Elbows track back, chest near mat
4. Press back to straight arms

Knee push-ups

Chest, shoulders and triceps.

1. Knees planted, arms straight
2. Lower chest with hips in line
3. Elbows track back, feet lifted
4. Press back to straight arms

Wide push-ups

Chest, shoulders and triceps.

1. Wide hands, straight arms
2. Lower chest with the body in line
3. Elbows follow the hands
4. Press back to straight arms

Diamond push-ups

Chest, shoulders and triceps.

1. Hands form a diamond, arms straight
2. Lower together, elbows beside ribs
3. Keep hips and head in line
4. Press back to straight arms

Pike push-ups

Shoulders and triceps.

1. Push the floor away, hips high
2. Move head forward as elbows bend
3. Forearms upright, heels lifted
4. Press up and back to straight arms

Chair dips

Chest, shoulders and triceps.

1. Straight arms, hands on chair edge
2. Lower hips close to the chair
3. Elbows bend behind, feet stay planted
4. Press through the hands to the top

Incline push-ups

Chest, shoulders and triceps.

1. Arms straight, hands on the seat
2. Lower as one line toward the chair
3. Palms and forefeet stay planted
4. Press back to straight arms

Squats

Legs and glutes.

1. Stand tall, feet planted
2. Sit hips back, knees follow toes
3. Heels down, thighs near parallel
4. Rise with hips and chest together

Jump squats

Legs and glutes.

1. Load the squat, feet planted
2. Drive up, swing arms overhead
3. Extend in the air
4. Land softly, bend hips and knees
5. Stand and reset

Sumo squats

Legs and glutes.

1. Wide feet, toes and knees turned out
2. Lower hips between your feet
3. Heels down, knees follow toes
4. Stand with hips and chest together

Lunges

Legs and glutes.

1. Step forward, plant the heel
2. Lower hips, bend both knees
3. Push back and bring the foot home
4. Step and lower on the other side
5. Push back to standing

Reverse lunges

Legs and glutes.

1. Step back, front foot stays planted
2. Lower the rear knee, chest tall
3. Press through the front foot and return
4. Step back and lower on the other side
5. Return to standing

Side lunges

Legs and glutes.

1. Step sideways, plant the whole foot
2. Sit back over the bent leg
3. Push up and return to the middle
4. Step and lower on the other side
5. Return to standing

Squat pulses

Legs and glutes.

1. Stay low, feet planted
2. Lower the small pulse with hips and chest
3. Heels down, knees follow toes
4. Rise a little, keep the squat

Calf raises

Legs and glutes.

1. Stand tall, feet facing forward
2. Raise heels over planted forefeet
3. Pause tall, keep knees extended
4. Lower heels slowly to the mat

Glute bridges

Legs and glutes.

1. Feet flat, ribs down
2. Hold a shoulder–hip–knee line
3. Lower hips with control

Crunches

Core control.

1. Feet planted, arms crossed
2. Curl ribs toward pelvis
3. Lower upper back with control

Sit-ups

Core control.

1. Curl, then sit up
2. Sit tall, feet planted
3. Lower to the mat with control

Leg raises

Core control.

1. Raise straight legs together
2. Pause with legs upright
3. Lower slowly, keep back steady

Bicycle crunches

Core control.

1. Hands by ears, shoulders lifted
2. Turn toward the opposite knee
3. Switch legs and shoulder with control
4. Keep hips steady throughout

Russian twists

Core control.

1. Balance seated, keep knees bent
2. Turn chest and hands to one side
3. Pass through center, switch sides
4. Keep hips and legs steady

Flutter kicks

Core control.

1. Keep back steady, palms down
2. Lift one long leg, lower the other
3. Switch with a small controlled kick
4. Keep both heels hovering

Dead bugs

Core control.

1. Tabletop knees, arms straight up
2. Reach opposite arm and leg
3. Return both, keep hips steady
4. Switch sides and return

Shoulder taps

Core control.

1. Hold a steady high plank
2. Lift hand to opposite shoulder
3. Plant the palm before switching
4. Tap the other side, hips steady

V-ups

Core control.

1. Start long, arms overhead
2. Lift torso and straight legs together
3. Reach toward the raised feet
4. Lower both with control

Supermans

Back, hips and core.

1. Face down, arms long
2. Raise arms and legs together
3. Hold, hips supported
4. Lower slowly, neck neutral

Bird dogs

Back, hips and core.

1. Hands and knees under the joints
2. Reach opposite arm and leg
3. Hold level, return with control
4. Switch sides and repeat

Inchworms

Back, hips and core.

1. Hinge at the hips
2. Walk palms out, keep feet still
3. Hold a long plank
4. Walk palms back
5. Stand tall

Bear crawls

Back, hips and core.

1. Opposite hand and foot step
2. Switch sides; knees stay low
3. Reverse the first pair
4. Step back to the start

Good mornings

Back, hips and core.

1. Soft knees; hands at chest
2. Send hips back; keep back long
3. Hold the hinge
4. Drive hips forward to stand

Jumping jacks

Coordination and conditioning.

1. Feet together; bend softly
2. Hop wide; sweep arms up
3. Land wide; arms overhead
4. Hop in; bring arms down
5. Land softly, repeat

Burpees

Coordination and conditioning.

1. Crouch and plant palms
2. Hop feet back to a plank
3. Hop feet underneath you
4. Drive up and jump
5. Land softly, stand tall

Mountain climbers

Coordination and conditioning.

1. Keep shoulders over palms
2. Drive one knee under the chest
3. Return the foot to its anchor
4. Switch legs; torso stays steady

High knees

Coordination and conditioning.

1. Stand tall; land softly
2. Drive knee up, opposite arm forward
3. Return foot beneath the hip
4. Switch legs and arm drive

Butt kicks

Coordination and conditioning.

1. Stay tall; knees beneath hips
2. Curl heel toward the glutes
3. Return foot softly beneath you
4. Switch legs; keep torso steady

Skaters

Coordination and conditioning.

1. Load one bent leg; trail the other
2. Push sideways off the support foot
3. Travel sideways through the air
4. Land softly; reach across
5. Bound back to the other side

Star jumps

Coordination and conditioning.

1. Crouch with feet beneath hips
2. Drive up from the toes
3. Open arms and legs in the air
4. Close the star before landing
5. Land narrow; bend knees softly

Shadow boxing

Coordination and conditioning.

1. Hands at chin; staggered stance
2. Jab straight; rear hand guards chin
3. Return the jab to guard
4. Pivot rear foot; turn hips into cross
5. Both hands return to guard

YYK AI

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TrueRep · the AI inside YYK It sees every rep.

The camera in YYK counts your reps. Fake ones don't count. Scroll down and watch.

It finds you. 0/33

33 points , nose to toes.

02 Try to fool it

People have tried some weird stuff.

Not deep enough.

Your hips stopped halfway down and waved.

03 Under the hood

How it actually works.

Your camera sees a grid of colours. That's all it gets.

A pose model finds 33 joints in every frame, on your phone.

Geometry turns the joints into angles and depth.

Each of the 38 exercises has a rulebook. Pass it, and the rep counts.

04 Every body

The usual suspects.

Long legs, short arms, broad shoulders. TrueRep measures you against your own body, not a template.

Case closed.

Even the donut squad agrees. Nobody on YYK fakes their way up, so when you level up, you earned it.

Privacy & camera

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Sorry, agent.

YYK uses your camera to count your reps. Here's what it sees, and what it doesn't.

The label

Read the label.

The story was a joke. This part isn't. Everything the camera does, on one label, in plain words.

the short version

Privacy Facts

Serving size 1 call · Servings per day you pick

Video uploaded

Frames kept after a set

Points read per frame

Faces recognised

Reps counted

People watching you

Used for ads or AI training

Camera dot

Data sold

Delete everything

* Percent daily values are based on your daily goal. The full legal version is in the privacy policy .

Your controls

You're in control.

Four things you can see and change yourself, on your own phone, any time.

try them right now

You'll always see it. Your phone lights a green dot whenever any app uses the camera. YYK only turns it on during a set.

Switch it off. Settings, Privacy, Camera: YYK off, whenever you like. You can still count your reps by hand.

Works offline. Turn the internet off mid-set. It still counts: the counting happens on your phone.

Delete everything. In the app's settings: your account and everything in it, any time.

Questions

Ask your camera.

The questions people ask us most. Pick one: your phone answers.

go on, ask

Your question

Pick a question.

Your camera has an answer for each one.

Is it recording me?

No. It reads each frame on your phone, turns it into 33 points, and throws the frame away. There's no video to watch later, for anyone.

Does anyone at YYK see my video?

No one can: it never leaves your phone. What reaches us is the count. Five squats looks like the number 5.

Can I use YYK without the camera?

Yes. Switch the camera off and count your reps by hand. TrueRep, the camera that counts your reps, just won't be there to catch the fakes.

What if someone walks in?

It looks for one body doing the set, and only counts joints. Your roommate in the background is not a rep.

Do you sell my data?

No. Not your video (we don't have it), not your reps, not your face. Nothing is used for ads or to train AI.

How do I delete everything?

In the app's settings, one button deletes your account and your history. The full legal version is in the privacy policy .

Anything else about your camera or your data? Help has more, or write to hello@yyk.now .

Nobody's watching. Just counting.

Your video stays on your phone. Only your rep count leaves it. Download YYK and pull the blinds.

Pricing

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Free to start. Pick your place.

Free forever

What does one call cost?

€0.04 a call, on Pro.

€0.04 a call, on Pro

That's 120 surprise sets a month for €4.99 a month . Cheaper than the coffee you drink while you skip them.

Rookie, Pro or Elite?

Same calls, same counting. Open a locker, see what's on the shelves.

Pro is on trial.

Fourteen days, free. We interviewed the things it ruined.

Reviews by furniture. Real reviews once real humans have written some.

The evidence

Every Pro feature from the first call. Nothing is charged before day 14.

Two days before it ends, we tell you. No surprise on day 15.

iPhone: Settings › your name › Subscriptions › YYK › Cancel Android: Play Store › your profile › Payments & subscriptions › Subscriptions › YYK › Cancel

You pay through the App Store or Google Play, so we never see your card.

Not guilty of tricks.

Money excuses, answered.

Feed the pig an excuse. It knows the answer.

Pick an excuse.

It's hungry.

It's probably a trap.

Rookie is free for good. No trial, no card.

I'll forget to cancel the trial.

We remind you two days before it ends. Cancel in your App Store or Google Play settings and you pay nothing.

Pro, Elite… same thing.

Elite is everything in Pro, plus what's coming next. The spec sheet above has the details.

Cancelling will be a nightmare.

Two taps in your App Store or Google Play subscriptions, any time. You keep your plan until the end of the period you paid for.

If I stop paying, I lose my streak.

Nope. Your XP, level and streak are yours on any plan.

€4.99 is a lot.

108 mathematicians say it's about €0.04 a call, at four calls a day. Cheaper than the coffee you drink while you skip them.

Anything else? Write to hello@yyk.now .

€4.99 in. Jackpot out.

120 surprise workouts a month on Pro. Rookie is free.

Help

Open this chapter's interactive edition

22 answers · 7 excuses left

Fire away.

Excuses get shot down. Questions get answered, in plain words.

pick one, pull the trigger

Still stuck?

Write to us. A real person reads every email. Tell us your phone model and what you tried, and we'll sort it out.

Who we are

YYK is a small team in France making a fitness game that calls you. Questions, bugs, love letters: hello@yyk.now .

Legal notice

Publisher

Registered office

Registration

Publication director

The details: privacy policy and terms (both drafts for now).

Questions and answers

It'll call me in the middle of a meeting.

It only calls inside the hours you pick. Outside them, it stays quiet.

It'll wake me up at 3am.

Not unless 3am is inside your hours. Pick the hours, sleep in peace.

What if I miss a call?

It happens. Pick up the next one.

How many calls a day?

Enough to reach your daily goal. You set the goal, YYK splits it into surprise sets. How many calls that makes depends on your goal.

The calls stopped coming.

Let YYK send notifications. On iPhone: Settings › Notifications › YYK. On Android: Settings › Apps › YYK › Notifications. A Focus mode can silence it on iPhone. On Android, set YYK’s battery use to Unrestricted so the phone doesn’t put it to sleep. Still quiet? Check your hours in the app.

I'm not fit enough.

Your daily goal comes from your goals, not ours.

I'll hurt myself.

Stop if anything hurts. YYK is a game, not medical advice: if you have an injury, a condition, or you're pregnant, check with a doctor before you start.

I don't have a gym.

Good. You don't need one. A floor and your phone. Every set is bodyweight.

What exercises are there?

Thirty-eight of them. See them all

Is the camera recording me?

Short answer: no video leaves your phone. The long answer has a bouncer in it. See what the camera sees

Can I play without the camera?

Yes, you can count your reps by hand. They just don't earn XP: TrueRep, the camera that counts your reps, is the one that has to see them.

I'll just fake the reps.

Go on, try. Watch people try

It isn't counting my reps.

Give YYK camera access. On iPhone: Settings › YYK › Camera. On Android: Settings › Apps › YYK › Permissions. Then prop the phone up so your whole body is in the frame, with the light in front of you, not behind you.

It's probably a trap.

Rookie is free for good. No trial, no card.

Cancelling will be a nightmare.

In your App Store or Google Play subscriptions, any time. You keep your plan until the end of the period you paid for. On iPhone: Settings › your name › Subscriptions. On Android: Google Play › your profile › Payments & subscriptions. Deleting the app doesn’t cancel it.

Pro or Elite?

Both are on the spec sheet. See the plans

I want my money back.

You pay through Apple or Google, so refunds go through them too. On iPhone: reportaproblem.apple.com. On Android: Google Play › Payments & subscriptions › Budget & history, then the order.

I paid but I don't have Pro.

Open YYK with the same Apple ID or Google account you paid with, then tap Restore purchase in the app’s settings.

How old do I have to be?

16 and up. Under 15 in France, a parent has to say yes first.

How do I delete my account?

In the app’s settings. Your data goes with it. Deleting your account doesn't cancel your subscription: cancel it in the App Store or Google Play first.

Will it work on my phone?

It's on the App Store and Google Play. All it needs is a front camera.

I can't log in.

Write to hello@yyk.now from the email on your account, and a human sorts it out.