Was: one number at the end
Live force while you hold
Instead of one number after the rep, you watch your force the whole time you hold. Set a target and the app beeps when you reach it.
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Fitness Kit
Full-body isometrics at home. Every rep saved.
The Fitness Kit pairs the Force Board, a 4 oz force gauge, with a platform, a steel bar and a strap. Pull or press against the bar as hard as you can. The free app measures the rep and keeps it.
300 kg or 450 kgyour gauge, your pick
Full bodypulls, squats, presses, curls, rows
Every repsaved in the free app
Trained on an IsoMax? See what changes
Illustration: a basic readout shows one number at the end of a pull and then clears. The Force Board app keeps the force curve and saves each rep to your workout feed.
IsoMax owners
Moving on from an IsoMax?
Dragon Door closed. No more units, no more straps or parts, and no more support if something breaks.
The Fitness Kit started life as the IsoMax Conversion Kit. It's the same overcoming isometrics you already know: pull or press against something that doesn't move, as hard as you can. The difference is what happens after the rep. It gets saved.
- Same training. Full-body isometrics, from one kit.
- A record, not a readout. Every rep lands in the free app, so you can see when you're getting stronger.
- A company that's still here. Real support, a warranty and ongoing app updates.
| Feature | IsoMax | Force Boardin the Fitness Kit |
|---|---|---|
| Full-body isometric training | Yes | Yes |
| Measures force | Single number | App that tracks every rep |
| Tracks progress over time | None | Yes, automatic |
| Guided routines and templates | No | Yes |
| Portability | Baseplate and strap | 1.5 lb Travel Platform |
| Company support and warranty | Closed | Active |
| Software updates | None | Ongoing |
Pull a rep
The moves you already know. Now on the record.
Five overcoming isometrics, set up the way the Fitness Kit ships. Press the button and slide up to pull harder, then hold the green zone. The readout strip shows your peak and clears. The app keeps every rep.
Mid-thigh pull
Works 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
Browse the full workout library
Traced from library photosYour turn
Hold Space or Enter to pull. Use the up and down arrow keys to pull harder or softer.
ReadoutPeak, then clears
--AppEvery max kept
0Demo numbers. Your real reps are saved in the app.
Exercise 1 - Mid-Thigh Pull
Short Steel Bar
Target180lbs0%
Sets →123
Reps123456
Max
RFD0
AVG0.0
MAX0.0
Current0.0
4Rest
6Pull
This whole setup comes in the Fitness Kit. Force Board, Travel and Home Platforms, a short or long steel bar and the long strap, so your IsoMax moves carry straight over.
From $389Choose your kit
The app
What the IsoMax never did.
Real screen recordings from the free Force Board app on iPhone and Android. A readout gave you one number. The app keeps the rep, the session and the trend.
Was: no routines
Routines that run themselves
Save the moves, sets, reps and rest once. The app times every hold and every rest, so all you do is pull.
Was: a notebook
Track every workout, for free
Put the notebook away. Each session is saved to your feed, with the max, average and time under load for every rep.
FreeWas: your memory
Set goals and track progress over months
Pick a goal for any routine and see how close you are, week by week. It's the long view a single readout can't give you.
Optional: $29.99/yr or $4.99/moIn the kit
Everything to replace your IsoMax setup.
The Force Board plus everything to anchor it at home, so your IsoMax setup can retire. Tap a move to try it in the demo above.
The Fitness Kit, formerly the IsoMax Conversion Kit
-
01
Replaces the readout
Force Board Portable
Where the IsoMax gave you one number, this 4 oz gauge sends every rep to the app over Bluetooth. Clip it in line with the strap using the included carabiners and short strap, and pick the 300 kg or 450 kg sensor.
Used in -
02
Replaces the baseplate
Travel Platform
Your new base. It's extruded aluminum, weighs 1.5 lb and is 14 in long, and the strap anchors under it while you stand on top.
Used in -
03
Wider stance
Home Platform
Bamboo, 26 in long, with three attachment points. Use it with the Travel Platform when you want a wider, more comfortable stance.
Used in -
04
Short or long
Steel bar
Pick the 16 in short bar with a rubber grip, rated 450 kg, or the 36 in knurled long bar, rated 300 kg. The long bar suits back squats and wide grips.
Used in -
05
Replaces the strap
Long quick-adjust strap
15 ft long and rated 450 kg. Shorten or lengthen it to put the bar right where each move needs it.
Used in -
06
Any door
Door anchor
A foam stopper that turns any closed door into an anchor point at home.
-
07
One-arm work
Grip handle
A rubberized handle for single-arm holds like curls and rows.
Used in
Technical details
The full spec sheet.
Every part of the kit, with its load rating, size and weight. Tap a part to open it.
The Fitness Kit includes
- Force Board Portable, with carabiners and a short strap
- Travel Platform and Home Platform
- Short steel bar or long steel bar
- One long adjustable strap
- Door anchor (foam door stopper)
- Grip handle
Force Board Portable
- Load
- Two gauges: 300 kg (reads up to about 660 lb) or 450 kg (reads up to about 990 lb)
- Connection
- Bluetooth to the free Force Board app on iPhone and Android
- Battery
- 1000 mAh rechargeable Li-ion. Lasts months between charges
- Charging
- USB-C
- Power
- Automatic low power mode. Tares automatically when it powers on
- Housing
- Tough ABS
- Size
- About 4 x 3 x 1 in
- Weight
- 4 oz
Travel Platform
- Rated load
- 500 kg
- Material
- Extruded aluminum
- Size
- 14 x 4 x 0.75 in
- Weight
- 1.5 lb
- Use it for
- Deadlifts, squats, overhead presses, curls and bent-over rows
Home Platform
- Rated load
- 500 kg
- Material
- Bamboo
- Setup
- Works with the Travel Platform for a wider, more comfortable stance. Three attachment points for different exercises
- Size
- 26 x 10 x 1 in
- Weight
- 4.5 lb
Short steel bar
- Rated load
- 450 kg
- Size
- 16 in long, 1.125 in (1 1/8 in) diameter
- Grip
- Rubberized. Lightweight
- Use it for
- Front squats, curls, rows, lat pulls and wrist exercises
Long steel bar
- Rated load
- 300 kg
- Size
- 36 in long, 1.125 in (1 1/8 in) diameter
- Grip
- Knurled
- Weight
- 3.75 lb
- Use it for
- Back squats, curls, rows, lat pulls and wrist exercises
Straps
- In the kit
- One 450 kg quick-adjust strap. A short strap also comes with the Force Board
- Size
- 1 in wide, 15 ft long
- Weight
- 0.5 lb each
Grip handle
- Use
- Rubberized grip for single-arm exercises
- Size
- 5 x 1.3 in
- Weight
- 4 oz
Door anchor
- Use
- A foam door stopper. Close it in a door for an adjustable anchor point at home
Will it feel familiar if I came from the IsoMax?
Yes. You still pull or press as hard as you can against something that doesn't move, and the gauge reads your force. What's new is what happens after the rep: it gets saved.
Is this the IsoMax Conversion Kit?
Yes. The IsoMax Conversion Kit is now called the Fitness Kit. It's the Force Board plus the Travel Platform, Home Platform, a steel bar, the long strap, a door anchor and a grip handle.
Can I really train my whole body?
Yes. Squat, deadlift, bench, overhead press, curl, row, shrug, calf raise and more. All isometric, all from one kit.
Do I need the app?
The app is where the value lives. It's free on iPhone and Android and tracks every workout, with live force, routines and every rep saved to your feed. An optional upgrade lets you set goals and track progress for $29.99 a year or $4.99 a month.
How much force can it handle?
The 300 kg gauge reads up to about 660 lb, and the 450 kg gauge reads up to about 990 lb. The 300 kg covers most people. Pick the 450 kg if your mid-thigh pull or squat is already close to 660 lb.
What about support?
The Force Board is an active PitchSix product, with a warranty and ongoing software updates. Questions go to team@pitchsix.com.
Fitness Kit
Don't lose the progress you built.
You already know isometrics work. Keep training the way that got you here, with a tool that finally keeps score.
Choose your kitFrom $389
New to isometrics? See how the Fitness Kit works