Tacit One - Sleep & Activity Tracker, No Subscription
Tacit One - Sleep & Activity Tracker, No Subscription
Buy it once. No subscription, no account to cancel.
The app is free. Entirely. Forever.
Most recovery trackers run on subscriptions: you pay for the hardware, then you pay every month to read your own measurements. The day you stop paying, the tracker stops talking.
The Tacit One doesn't work that way. Sleep stages, heart rate, activity and workouts, full history: everything is open from day one, with no premium plan and no card on file.
Built to be forgotten
No screen. No buzz on every message. The module disappears under a shirt cuff as easily as under a sports top. The woven band slips on in one motion and stays flat against your wrist when you sleep on it.
What it measures
- Sleep — duration, stages (awake, light, deep, REM), night wake-ups.
- Heart rate — continuous, day and night.
- Activity — steps, distance, calories.
- Workouts — session tracking, with GPS route via your phone.
Specifications
- Screen: none
- Battery life: 50 days in normal use, 8 days with continuous heart rate
- Battery: 265 mAh
- Charging time: 50 min for a full charge
- Water resistance: IP68
- Connectivity: Bluetooth 5.4
- Certifications: CE, RoHS, FCC
In the box
- 1 × Tacit One module
- 1 × stretchy woven band, in your size
- 1 × magnetic charging cable
- 1 × quick start guide
The Tacit One is a wellness and activity tracking device. It is not intended to diagnose, treat, cure or prevent any disease, and does not replace professional medical advice.
You forget you're wearing it.
No glass, no buckle to adjust. The woven band slips on in one move and sits flat on your wrist — thin enough to disappear under a shirt cuff, soft enough to sleep on without leaving a mark.
It reads your heart all day, all night.
Optical sensor and 3-axis accelerometer: continuous heart rate, sleep stages, night wake-ups, steps, distance and workouts. Nothing to start, nothing to stop — the band knows when you go to bed and when you start a workout.
Your night, broken into stages.
The app opens on last night: the time you actually fell asleep, how long you really slept, every wake-up, and the split between awake, light, deep and REM. One glance tells you whether the night was restful or just long.
3 days per charge. 50 minutes to top up.
Tacit One lasts up to 3 days of full use, heart rate tracking included. A full charge takes about 50 minutes on the included magnetic cable: plug it in while you shower and have breakfast, and it's good for another three days.
Zero distraction
No screen, no buzzing, no notifications. The band has no way to interrupt you — the only connected device you'll never want to flip over.
Automatic tracking
No buttons, no modes to switch on. It detects when you fall asleep, wake up and start a workout from your heart rate and movement.
Free app
Download, pair, done. Every metric is unlocked from day one — no premium tier, no ads, no time limit.
The app is free. Complete. For good.
Sleep stages, heart rate, activity and workouts, full history: everything is unlocked from day one. No premium plan, no card on file, no expiry date. Leave the band in a drawer for six months, pick it up again, and it works exactly as before.
What you won't be paying
Set the slider to what a subscription-based band charges per month, and watch it add up.
Grey: the subscription, added up — hardware not included. Orange: Tacit One — the same amount after one year, three years or ten.
The details, nothing hidden.
- Sensors
- Optical HR + 3-axis accelerometer
- Battery life
- Up to 3 days of full use
- Workouts
- Session tracking, GPS route via your phone
- Water resistance
- IPX8 · 5ATM
- Band
- Woven stretch nylon
- Connectivity
- Bluetooth 5.4
- Compatibility
- iPhone and Android
- App
- G Band — free, no in-app purchases
- Screen
- None
- Battery
- 125 mAh
- Charging time
- 50 min for a full charge
- Certifications
- CE, RoHS, FCC
- Warranty
- 2 years
What you get
- 1× Tacit One module
- 1× Woven stretch band
- 1× Magnetic charging cable
- 1× Quick start guide
- 1× Gift box
Free shipping, tracked end to end.
10 to 20 business days. Tracking number sent as soon as your order ships.
Send the band back and get a full refund, no questions asked. Return shipping is at your expense.
Replacement or repair if anything's wrong. Customer support by email, 7 days a week.
Questions we get asked.
Is there really no subscription?
Yes — that's the whole point. The app is free and complete: no premium version, no locked features, no card to save. The price on this page is all you'll ever pay, today and five years from now.
Leave the band in a drawer for six months, pick it up again, and it works exactly as before. Nothing gets cut off, because there's nothing to renew.
No screen — how do I see my data?
Everything lives in the app on your phone. That's by design: no screen means a thinner band and nothing that ever interrupts you.
Which phones does it work with?
The G Band app, on iPhone and Android, over Bluetooth. It's free on the App Store and Google Play — no paid account, no in-app purchases.
Can I sleep with it on?
That's where it earns its keep. The woven band is flat and soft, won't leave a mark, and the module gives off no light at night.
Shower? Pool?
The band is rated IPX8 / 5ATM by the manufacturer: showers, sweat and rain are no problem, and it handles pool swimming. Rinse it with fresh water after the pool or the sea and let it dry. Avoid hot water, saunas and diving.
How long does the battery really last?
The manufacturer states up to 3 days of full use, heart rate tracking included. In other words: a top-up every two to three days, easy to fit into your morning shower. A full charge takes about 50 minutes on the included magnetic cable.
How accurate is it?
It's built to track your trends: this week's sleep against last month's, today's resting heart rate against your own average.
Tacit One is a wellness device, not a medical device. It doesn't replace medical advice or a clinical exam.
What if it's not for me?
You have 30 days to send it back for a full refund, no questions asked (return shipping at your expense). It also comes with a 2-year warranty.
One payment. No subscription, ever.
Competing recovery bands are rented: $20 to $30 a month, and your data goes dark the day you stop paying. Tacit One is yours.
Order now — €99,99