Heavy load, less risk
Nothing moves, so there's no bar to miss, no plates to drop and no momentum to fight. You meet the resistance at your own max.
Fitness
Force Board for fitness
Train heavy at home. No weights.
The Fitness Kit turns a 4 oz force gauge into a full-body isometric gym that fits in a closet. Pull or push against the bar as hard as you can, and the free app measures and saves every rep.
300 or 450 kggauge options
Full bodypull, squat, curl, press
4.7 48 reviews
- 4.7 stars, 48 reviewsFrom Force Board owners
- Free appiOS and Android, every rep saved
- 80 readings a secondLive force while you pull
- Designed in UtahReal support and updates
Why isometrics
Heavy strength work, without the heavy stuff.
Isometric training means pushing or pulling against something that doesn't move. You work at your true max without loading a bar, and the Force Board shows exactly how hard you went.
No weights to buy or store
The whole kit packs into a bag. No rack, no plates and no bench to make room for.
Built for any age
Every rep scales to you. A first-timer and a lifelong lifter use the same kit, each at their own capacity.
A number on every rep
The gauge reads your force 80 times a second and saves it, so you can see when you're getting stronger instead of guessing.
Try it
Pick a movement. Press and hold to pull.
Five moves traced from our workout library photos, set up the way the Fitness Kit ships. Press the button and slide up to pull harder, then try to hold the green zone. The readout mirrors the app's session screen.
Mid-thigh pull
Trains glutes, hamstrings, back and grip
- Stand on the platform with your feet about hip width apart.
- Set the strap so the bar sits at mid-thigh with your knees and hips slightly bent.
- Brace, then drive the floor away as hard as you can.
Cue: Chest up, bar close, push through your whole foot.
Travel PlatformHome PlatformShort or long barLong strap
See more movements in the workout library
Traced from our workout library
Your turn
Hold Space or Enter to pull. Use the up and down arrow keys to pull harder or softer.
Example numbers. Your own sessions show your own force.
Exercise 1 - Mid-Thigh Pull
Short Steel Bar
Target180lbs0%
Sets →123
Reps123456
Max
RFD0
AVG0.0
MAX0.0
Current0.0
4Rest
6Pull
Everything in this demo ships in the Fitness Kit. The gauge, both platforms, a steel bar and the strap.
From $389Shop the Fitness Kit
Inside the app
The app is free. It keeps every rep.
Real screen recordings from the Force Board app on iPhone and Android.
Live force on every rep
Set a target load and pull. The app shows your force live and beeps when you hit the target.
Build any routine you want
Pick exercises, sets, reps and rest. Save as many routines as you like, and the app runs the timers for you.
Track every workout
Every session lands in your feed with each rep's max, average and time under load.
FreeSet goals and track progress
Set a goal for any routine and watch your numbers climb toward it over weeks and months.
Optional upgrade, $29.99/yr or $4.99/moWhat's in the box
One kit. Every move on this page.
The Fitness Kit is the Force Board plus everything you need to anchor it at home. Tap a move to see it set up.
The Fitness Kit
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01
Force Board Portable
The gauge. It clips in line with the strap using the included carabiners and short strap. 4 oz, with a 300 kg or 450 kg sensor.
Used in -
02
Travel Platform
Extruded aluminum, 14 in long and 1.5 lb. Stand on it and anchor the strap underneath you.
Used in -
03
Home Platform
A 26 in bamboo base that works with the Travel Platform for a wider, more comfortable stance. Three attachment points.
Used in -
04
Steel bar, short or long
Choose the short bar (16 in, rubber grip, rated 450 kg) or the long bar (36 in, knurled, rated 300 kg) for back squats and wider grips.
Used in -
05
Long adjustable strap
15 ft, quick-adjust and rated 450 kg. Its length sets the bar height for each move.
Used in -
06
Door anchor
Close it in any door for an extra anchor point around the house.
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07
Grip handle
A rubberized single-hand grip for one-arm work.
Used in
Home first. Packs when you travel.
The gauge, a strap and the Travel Platform come to about 2 lb, so your training can come with you.
Compare
Strength training without the home gym.
How the Fitness Kit stacks up against building out a corner of the garage.
| Feature | Fitness Kit | Rack and plates |
|---|---|---|
| Heaviest load | Your own max, up to 300 or 450 kg on the gauge | Limited to the plates you own |
| Space it needs | Fits in a closet or a gym bag | A rack, a bench and floor space for plates |
| Max effort, training alone | Let go and the rep is over | A spotter or safety arms are a good idea |
| Tracking | Every rep saved automatically | Only what you write down |
| Goals | Set a goal and see your progress toward it | Up to you and a notebook |
| On the road | Gauge, strap and Travel Platform: about 2 lb | Stays home |
Isometric strength builds most at the position you hold, so most people train two or three bar heights for each move.
Reviews
People who train with it.
This has been my favorite purchase in a long while! Despite being focused on climbing, it has performed every function that I wanted for my general isometric exercises.
Audio cues tell me when to start and stop each exercise, while other cues tell me when I meet or exceed my target max load.
Force Board tracks every rep and lets you target specific physiologic components.
Pick your setup
Start with the Fitness Kit.
Everything for home
Fitness Kit
Formerly the IsoMax Conversion Kit
$389
Includes the Force Board, Travel Platform, Home Platform, your choice of bar, the long strap, a door anchor and a grip handle. Full kit details
Force Board only
Already have a bar, a rig or a sturdy anchor?
From $149
- The same gauge and the same free app
- Clips into straps, handles or a bar you already own
- Add a platform or a bar whenever you're ready
Free app on iPhone and Android. Optional upgrade for goals and progress: $29.99 a year or $4.99 a month.
For IsoMax owners
Coming from an IsoMax?
Dragon Door closed and the IsoMax went with it. The Fitness Kit started life as the IsoMax Conversion Kit: the same full-body overcoming isometrics, with an app that saves every rep instead of a number that disappears.
Compare IsoMax and Force Board
Partner
Synapse and Force Board
PitchSix partnered with Synapse to pair supramaximal eccentric training with Force Board tracking, in a portable system under 2 lb.
Visit SynapseQuestions
Questions people ask first.
Do I need anything else to get started?
No. The kit ships with the gauge, both platforms, a bar, the long strap, a door anchor and a grip handle. Download the free app, pair the Force Board over Bluetooth and you're ready.
How hard should I push?
Ease in. Set a target load in the app below your max and let the beep tell you when you're there. Build toward full efforts over your first few sessions.
Is it a good fit for older lifters?
Many people choose isometrics because every rep works at their own capacity, with nothing to lift or lower. If you have a medical condition or an injury, check with your doctor before starting a new program.
300 kg or 450 kg gauge?
The 300 kg gauge reads up to about 660 lb, which covers most people on every move. Pick 450 kg if your mid-thigh pull or squat is already near that range.
Is the app free?
Yes. The free app runs Quick Start and your routines, and saves every session to your feed. An optional upgrade adds goal setting and progress charts for $29.99 a year or $4.99 a month.
Which phones does it work with?
iPhone and Android, over Bluetooth.
Can I take it when I travel?
Yes. The gauge, a strap and the Travel Platform come to about 2 lb and fit in a carry-on.
I trained on an IsoMax. Will this feel familiar?
Yes. It's the same overcoming isometric training: you pull or press against an immovable resistance and the gauge reads your force. The difference is that every rep is saved.
Get strong at home. Measure every rep.
Training for climbing? See Force Board for climbers