iPhone · Apple Watch
Turn YouTube and TikTok workout videos into a follow-along routine
Follow the workout, not the video. Zestimer takes your favourite YouTuber, a YouTube video, a Short or a TikTok clip, and turns it into a customisable workout plan you can follow along with.
- 1A video you found
- 2Zestimer reads it
- 3A workout that runs itself
Free to start. No account.
Import a workout
10:26
How it goes
Three taps from a link to a workout.
You already saved it
The ten-minute stretch you keep meaning to do. It looks easy enough, and you have been meaning to try it for weeks — but the moment you start, you are watching the screen, remembering the move and counting the seconds, and you give up.
Paste the link
Copy the video, or tap Share in YouTube or TikTok, choose More, then Zestimer. Either way, the video you liked comes back as a workout you can follow.
Let’s work out
Press start. Zestimer counts down, calls each move, and tells you when to switch sides. Cast it to the TV when you want it on the big screen — and the whole thing runs on Apple Watch too.
Not quite right? Change any interval, drop a move, or ask for the whole thing easier. It is your workout now, not a video.
The voice
Work.Rest.Switch sides.
This is the part nobody films: knowing when to stop. Zestimer names the next move before it arrives, counts the last three seconds out loud, and tells you when to switch sides — so you are never squinting at a screen halfway through a plank.
- 00:00Start bicycle crunches
- 00:273 · 2 · 1
- 00:30Rest
- 00:40Next up — side plank, left
- 01:10Switch sides
No video needed
Or start from nothing.
Besides turning videos into workouts, you can ask the AI to write a plan from scratch. The app also ships with 24 hand-picked routines for strength, HIIT and stretching — made for training at home, at whatever pace you like.
- Ask for one
- Twelve minutes, a mat, a sore lower back. Zestimer writes the workout. Don’t like a move? Say so, in plain words, and it swaps it.
- Build one
- Drag, tap, done. Circuits, rounds, work and rest come together in about a minute — and stay yours.
- Take one
- 24 ready-made routines and 100+ illustrated moves, already timed. Open one and start.
Just need a clock?
The timers, without the app.
Every protocol below runs free in this browser, already set to the clock it is named for. When you want it in your pocket, with a voice and a wrist, the app is one tap away.
- Tabata Timer20 seconds on · 10 seconds off · 8 rounds · 4 minutes total
- HIIT Timer30 seconds on · 30 seconds off · 10 rounds · 10 minutes total
- EMOM Timer60-second minutes · 10 rounds · 10 minutes total
- AMRAP TimerOne 10-minute block · no scheduled rest
- Circuit Training Timer45 seconds per station · 15 to move · 12 stations · 12 minutes total
- Boxing Round Timer3-minute rounds · 1 minute rest · 12 rounds · 48 minutes total
Everywhere
One workout. Every screen.
Bicycle Crunches
00:17
Next
Rest
Your iPhone runs the show
The dial, the coach, the library — home base.
Exercise Library
100+ moves, fully illustrated.
- Jumping Jacks
- High Knees
- Burpees
- Front Kicks
- Jab-Cross Combo
- Butt Kicks
- Jump Rope
- Push-Ups
- Diamond Push-Ups
- Squats
- Lunges
- Plank
- Bicycle Crunches
- Glute Bridges
- Downward Dog
- Cobra
- Child's Pose
- Pigeon Pose
- Tree Pose
- Savasana
Pricing
Free
Everything a workout timer should do.
Download it and train today — no account, no cap on how often you train.
Zestimer Pro
- Turn any YouTube or TikTok video into a workout
- Personal AI coaching for every workout
- Generate a workout from scratch with AI
- Cast your workout to any TV or AirPlay display
- The whole session on your Apple Watch
- Quick Start & heatmap widgets on your Home Screen
- Unlimited custom workouts
7 days free
Prices in USD — the App Store shows your local price.
How it works
Straight answers
What Zestimer reads
The useful part of a workout video is a list: which move, for how long, in what order, with how much rest. Zestimer reads the video itself — what is said, what is shown, and the on-screen timers most fitness creators put in the corner. Not the description or the comments, which are often wrong and often missing.
A ten-minute follow-along and a forty-second TikTok come out the same shape: circuits, moves, intervals.
The output is a Zestimer workout. Not a transcript, not a bookmark, not a link that opens the video again.
What you can change
An AI-built workout is editable before you start it. Every interval is a number you can change, every move can be dropped or swapped, and the whole thing can be adjusted in plain words — "make the rests longer", "swap the burpees for something quieter".
What the creator gets
The video stays on the workout, credited, one tap from the channel it came from — right there when you want to check a movement mid-session. Zestimer hosts nothing and re-uploads nothing: it makes a timer that follows a video you found, and points you back at the person who made it.
What running it is like
The dial counts down the current interval; the ring empties as it goes. The next move is named before each change, the last three seconds are counted, rests are announced — and so is the moment to switch sides, which a video cannot tell you, because it does not know which side you started on.
Turn all of that down to beeps, down to haptics, or off. The screen stays awake, music keeps playing, and the session mirrors to an Apple Watch, which can also run it alone.
Press and hold to end a session — the one gesture in the app that asks you to mean it.
When there is no video
Describe what you want and the AI writes it, build it yourself in the editor, or open one of the 24 ready-made routines and press start. Everything lands in the same library, runs on the same dial, and is edited the same way.
Do I need an account?
No. Zestimer has no accounts — your workouts live on your device and in your own iCloud.
What does it cost?
The interval timer, the illustrated exercise library and the 24 ready-made routines are free, with no cap on how often you train. Video imports, AI-built workouts, TV casting, Apple Watch, the Home Screen widgets and unlimited custom workouts are Zestimer Pro, which starts with a free trial.
Does it need an internet connection?
Importing a video does. Running one does not — once it is in your library it runs offline, on the Watch too.
Which platforms can it import from?
YouTube, including Shorts, and TikTok. Instagram Reels are not supported today.
Are the exercises animated?
The library is illustrated today; animation is in the works.
Is there an Android version?
Not today. Zestimer is an iPhone and Apple Watch app, built by one person.
Made by one person
I write code for a living, which gave me a sore back and terrible posture. I built the stretching app I wanted, then got annoyed that every video I saved stayed a video.
Workout Complete
Your move.
Zestimer is free on the App Store. Pro adds video imports, AI workouts, TV casting and unlimited custom workouts.
- illustrated moves
- 100+
- ready-made routines
- 24
- accounts required
- 0