v2 API Now Available

Work Capacity
Measured

Power your application with the most advanced APIs for quantifying athletic performance. Don't just log workouts, measure fitness.

The Physics of Fitness.

Forwod enables training apps to quantify fitness for users, so they can train smarter, measure progress, and maximize gains.

Outsource the science of human performance to us, so you can deploy a world-class biomechanics engine to your customers today.

We distill complex multi-modal training into the currency of fitness.

“Fitness is... your work capacity across broad time and modal domains.”

Greg Glassman — Founder, CrossFit & Co-Founder, Broken Science Initiative

Core Analytical Metrics

Integrate our biomechanical engine directly into your architecture to transform raw data into high-fidelity fitness metrics.

Workout Power

Translate workout logs into horsepower or watts.

This endpoint quantifies true mechanical intensity across multi-modal movements. By applying our Newtonian engine to "flat" data (reps, weight, and time), we normalize disparate physical modalities into a universal energy currency, revealing an athlete's absolute power output in any given protocol.

RepMax

Capture peak power for maximal-effort repetitions.

RepMax calculates the high-force, short-duration ceiling of an athlete's performance. By analyzing the absolute mechanical output of isolated maximal-effort sets, this endpoint identifies the high-intensity 'anchor' of the power-duration profile and defines the athlete's absolute kinetic ceiling.

Kinetic Work Capacity (KWC™)

Overall fitness across broad time and modal domains

Move beyond individual workout tracking to quantify an athlete's true physical engine. This metric aggregates trailing telemetry to provide a unified snapshot of absolute mechanical power, establishing a definitive baseline for longitudinal performance tracking.

Allometric Power Quotient (APQ™)

A universally normalized kinetic performance index.

Evaluate true mass-normalized biomechanical capability. APQ™ utilizes advanced allometric scaling to convert raw mechanical output into a universal, dimensionless scalar, enabling equitable cohort comparisons across all body types.

Power Curve

Generate an Omni-Domain Power-Duration (OmPD) curve.

Visualize the full spectrum of physical capacity. By synthesizing data from varied workouts, this endpoint maps mechanical power decay and fatigue resistance, providing athletes with a definitive map of their power-producing potential from 1-second bursts to endurance efforts.

Pythia

Predictive time forecasting for future workouts.

Eliminate pacing guesswork with high-fidelity performance predictions. By intersecting the demands of future training with an athlete's established OmPD curve and APQ™, Pythia calculates precise completion times, transforming historical kinetic data into actionable foresight.

Interactive Demo

Slide the Completion Time slider to see Forwod recalculate Work Capacity (KWC™) based on changes to the Murph result.

1. Select Profile

Profile: Marcus is 6 feet tall and 220lb.

2. Log "Murph" Workout

1 mile Run

100 Pull-ups

200 Push-ups

300 Air Squats

1 mile Run

Completion Time40:00

Power for Murph

330W
0.44hp

Work Capacity (KWC™) Current

251W
0.34hp

Power Curve

Dynamically Recalculated
1200W @ 3s580W @ 180s550W @ 200s520W @ 240s460W @ 420s420W @ 540s360W @ 1200sMurph: 330W @ 2400s
330W

Simple, Usage-Based Pricing

Pay only for the calculations you run.

Standard

For growing applications logging functional workouts.

QuantityUnit Price
For the first 1 to 1,000$0.10
For the next 1,001 to 10,000$0.06
For the next 10,001 to 100,000$0.04
For the rest$0.02
  • Access all Core Endpoints
  • Usage-Based Billing
  • Technical Support
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Enterprise

For high-volume platforms, military and first responders.

  • SLA Guarantees
  • Priority Support
  • Enterprise SDKAn Embeddable Air-Gapped Software Coprocessor.
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