Launching on Kickstarter
A readiness signal based on effort, not HRV.
A precision hand dynamometer calibrated with NIST-certified load cells. One daily squeeze tells you whether to push or recover. Engineered for athletes and health-conscious people who want real-time readiness intelligence.
- Super Early Bird
- $103Unlocked with your email Best price.
- Kickstarter
- $12119% off retail
- Retail
- $149After the campaign
USD · one-time · free US shipping on Kickstarter
Specifications
A device you'll actually use.
- Force range
- 0–300 lbs (0–1300 N)
- Connection
- Bluetooth
- Compatibility
- iOS 17 or later
- Battery
- 20 days
- Charging
- USB-C · 90 minutes
GripFit vs a standard dynamometer
Same squeeze. Smarter answer.
The GripFit app on your iPhone tells you whether to push or recover.
Capability
GripFit
Standard
Bluetooth pairing
App-enabled readiness
Trend tracking
Bilateral balance
Built for iPhone.
Today's score · 01 / 03
One number you can act on.
Your readiness score compares today's grip to your personal baseline, on a 0–100 scale. Push when it's high. Recover when it's not.
Trends & metrics · 02 / 03
A stronger approach to longevity.
From one week to all-time, your trend line shows where you're headed before you feel it. Underneath: peak force, left/right balance, and AM vs PM strength, every session.
Live force · 03 / 03
See the full force curve.
Watch force build, peak, and fade in real time. More signal than a single max — and a live number to push past.
Why grip
The strongest signal you aren't tracking.
Grip strength is a clinically backed marker for longevity and overall fitness. GripFit turns it into a daily readiness read.
- 01
Readiness from output, not inference.
HRV guesses recovery from your heartbeat. Grip measures what your nervous system can actually produce today, in one five-second effort, before you train.
- 02
A clinically backed marker, not a fitness gimmick.
Clinicians use grip strength to track recovery after injury and surgery, and researchers use it to predict long-term health. Each drop of 5 kg in grip strength was linked to a 16% higher risk of death from any cause in a study of nearly 140,000 adults.
- 03
Precise enough to trust the trend.
A custom load cell, calibrated against NIST-certified references, makes the small day-to-day changes real. That's what turns a number into a trend, and a trend into a decision: push or recover.
Kickstarter
Know whether to push or recover.
$103Super Early Bird · Kickstarter $121 · $149 Retail