Beta Program Now Open — join early adopters already training with FORJ
Beta Program Open

Resistance Training
Quantified.

Our SmartPin brings real-time force, velocity, and range-of-motion data to every rep — making objective training available to everyone.

Dashboard
Sessions
Analytics
Insights
Athletes
Velocity Insights — Last 8 Sessions
Peak Velocity
0.84 m/s
Force Output
+12%
Symmetry
96%
ROM
Full

Everything you need,
nothing you don't

Built for serious athletes and practitioners who demand accuracy.

Real-Time Telemetry

Force, velocity, rep count, and range of motion streamed live with zero lag between movement and data.

AI Performance Analysis

Our engine identifies patterns, flags imbalances, and delivers actionable recommendations after every session.

Progress Tracking

Session-over-session trend analysis showing exactly how your strength and form evolve over time.

Limb Symmetry Index

Bilateral comparison data that catches asymmetries before they become injuries — critical for training, rehabilitation, and performance.

Universal Compatibility

Attaches to any standard weight stack pin. One device, any gym, any exercise.

Professional Dashboard

Practitioners get a dedicated web dashboard to manage clients, assign programs, and review client data remotely.

Objective data for better training and rehabilitation decisions

Take the guesswork out of training and rehabilitation. FORJ gives your practice the measurement tools previously found only in research labs — at gym-floor pricing.

  • Monitor client progress objectively between sessions
  • Evidence-based exercise prescriptions backed by real data
  • Improve client adherence with visible, measurable progress
  • Detailed reporting for professional documentation
Start a Professional Account
Client Progress — Week 6
Right Quad — Peak Force 87%
Left Quad — Peak Force 71%
Limb Symmetry Index 82%
ROM — Full Flex 94%
Professional Insight

Left quad force deficit at 71% — recommend additional eccentric loading before return-to-sport clearance.

Simple, transparent pricing

No lock-in. Cancel anytime.

Individual
$5
per week

For gym-goers and athletes serious about tracking their training objectively.

  • Full SmartPin app access
  • Real-time force, velocity & ROM
  • AI-powered training insights
  • Session history & trend analytics
  • Personal progress dashboard
Start with FORJ

Four steps to objective training

Step 01

Attach SmartPin

Clip our sensor to any weight stack pin. No setup required — pairs instantly via Bluetooth.

Step 02

Train Normally

Perform your workout as usual. The SmartPin captures every rep automatically in real time.

Step 03

View Analytics

See force output, velocity, ROM, and limb symmetry live in the FORJ app as you work.

Step 04

Optimize Training

Use AI-powered insights to fix imbalances, break plateaus, and improve results faster.

Built by engineers who train

We are 3 engineers who saw a serious gap in the market for accurate resistance training data. Inspired by how smartwatches transformed cardio, we built the SmartPin to do the same for strength training.

Read Our Full Story

Ready to train with data?

Join hundreds of athletes and practitioners already using FORJ to get measurable results.

Start with FORJ