Every workout gets its own playlist
Connect Spotify and add a playlist to each workout. With Spotify Premium, the music starts together with your workout. Without Premium, HIIT FLOW opens the playlist right in your Spotify app.
HIIT FLOW
Train. Don't stare at your phone.
HIIT FLOW is your interval timer with huge digits, a signal color for every phase and countdown beeps before every switch. Need a break? Just say “pause”. Runs right in your browser and installs like an app.
No account needed. Coming soon to Google Play
You see the phase before you read the number.
Get ready is blue, work is orange, rest is mint. The color fills the whole screen, and the digits are big enough to read from the floor. Before every switch, beeps count down the last seconds.
- Get ready
- Work
- Rest
- Countdown beep
Time that doesn't drift
The timer counts against fixed end points instead of adding up seconds. Even after 30 minutes, every round is spot on.
Next round, called out early
If you like, HIIT FLOW announces the next round while you're still resting. You know what's coming without looking.
Set up in seconds
Pick your sets, work and rest times. Three templates are ready to go: Full Body Blast, Tabata Core and Legs & Glutes.
Hands on the weights. Commands by voice.
Need a quick break mid-set? Say “pause”. Ready again? Say “resume”. No sweaty screen, no hunting for the button.
- In the browser
- In Chrome and Edge. Tap the microphone in the timer once, and HIIT FLOW starts listening.
- In the Android app
- With the wake word “Hey Flow”, which you can change. In English, the app uses your phone's built-in speech recognition. Offline recognition without the beep is currently German only.
- Start
- Pause
- Resume
- Next
- Back
- Stop
- Restart
Stick with it, together
Start a challenge, like 100 squats a day, or join an open one. Everyone sets their own daily goal and logs sets whenever it suits them.
- Points and streaks for every day you show up
- A leaderboard that updates live
- Push notifications when your crew gets going or hits their goal
Screen with sample data. Challenges need an account.
Stay on track with your crew
The Challenges clip. Sound on.
Train first. Sign up only if you want to.
Guest mode, no account
Tap “Continue as Guest” and go. Your workouts and history stay on your device.
Works without signal
After the first visit, HIIT FLOW starts even in a basement gym with zero bars.
An account when you need one
For challenges and syncing between phone and tablet. Your guest workouts move into your new account.
How HIIT FLOW handles your data is explained in the app's privacy policy (German).
Three rounds to your first workout
- Round 1 / 3
Open
Go to hiitflow.8thsense.de in your browser and tap “Continue as Guest”. No download, no forms.
- Round 2 / 3
Pick a workout
Take a template or tap the plus to build your own: sets, work, rest and, if you like, a playlist.
- Round 3 / 3
Go
Tap play or say “start”. From now on, the color tells you what to do.
This is HIIT FLOW
Real screens from the app. Drag, swipe or use the arrows to browse.
1 / 8 Work: orange, big digits, the next phase in view.
On your home screen, no store needed
HIIT FLOW is a web app. Once installed, it launches full screen from your home screen, just like any other app.
Android
Open it in Chrome and tap “Install” on the sign-in screen. Or choose “Install app” in the browser menu.
iPhone and iPad
Open it in Safari, tap Share and choose “Add to Home Screen”.
Computer
In Chrome or Edge, click the install icon in the address bar.
Google Play
The Android app is in the works and coming soon to Google Play.
FAQ
What is HIIT FLOW?
An interval timer for HIIT, Tabata and circuit training. You set your sets, work and rest times, and HIIT FLOW shows each phase in its own signal color with big digits and plays countdown beeps before every switch. On top of that: voice control, a Spotify playlist per workout and challenges with others.
Do I need an account?
No. In guest mode you can use the timer, workouts and history without signing up, and your data stays on your device. You only need an account for challenges and to sync workouts and history across devices. If you create a new account after using guest mode, your workouts come with you.
Does HIIT FLOW work offline?
Yes, after the first visit. The web app saves itself in your browser storage and starts without a connection from then on. Timer and workouts run entirely on your device. Challenges, account sync and Spotify need a connection.
How does voice control work?
Say commands like “start”, “pause”, “resume”, “next”, “back”, “stop” or “restart”. In the browser this works in Chrome and Edge once you've tapped the microphone in the timer. The Android app also listens for a wake word (“Hey Flow”, customizable). In English it uses your phone's built-in speech recognition; fully offline recognition is currently available in German only.
Do I need Spotify Premium?
For auto-start, yes: with Spotify Premium and an active Spotify device, a workout's playlist starts together with your training. Without Premium, HIIT FLOW opens the playlist in your Spotify app and you hit play yourself. And of course the timer works without Spotify, too.
Is HIIT FLOW on Google Play?
Not yet, the Android app is coming to Google Play soon. Until then, install HIIT FLOW straight from your browser: on Android via Chrome, on iPhone via Safari with “Add to Home Screen”. After that, HIIT FLOW launches from your home screen like any other app.
Who's behind HIIT FLOW?
HIIT FLOW is built and run by 8thsense in Hannover, Germany. Accounts and challenges live on 8thsense's own server, not with an analytics or ad service.
Your next workout starts in three seconds.
Open it in your browser, start as a guest, install later.
Coming soon to Google Play An app by 8thsense from Hannover, Germany.