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FitCommit vs Spren: Which is Better?

Last updated: July 15, 2026

Reviewed by Andrew Menechian, Head of Fitness, FitCommit

Honest, feature-by-feature comparison of FitCommit and Spren. See pricing, pros and cons, and which app is best for your fitness goals.

Quick Summary

FitCommit

Photo-based body-composition estimates with connected After Photo previews and flexible food tracking.

3-day free trial

Then $0.99/week. Cancel anytime.

Spren

Clinically validated body scanning from smartphone

Subscription required

Offers vary by storefront

Feature Comparison

FeatureFitCommitSpren
AI Body Scan
−Body fat % + lean mass
−Yes
AI Food Scan
−Photo scan
−No
Body Fat Tracking
✓AI scan from camera
✓AI scan from selfie
TDEE Calculation
✓From body composition
✓Not included
Macro Tracking
−Included
−Not included
Transformation Preview
✓AI-generated photo
×No
Food Database
−14M+ foods
−Not included
✓Better option
✓Also available

What Makes FitCommit Different

FitCommit connects all four stages in one system: body scan, plan, After Photo, and food tracking. 3-day free trial, then $0.99/week. Renews automatically unless cancelled.

Try it free →

Try FitCommit and see the difference

AI body scan + food camera + transformation preview. Free trial.

Try FitCommit Free

Pros and Cons

Spren Pros

  • ✓Spren reports 2.6% mean absolute error versus DEXA in its September 2025 validation summary
  • ✓Peer-reviewed validation studies
  • ✓B2B API available for gym partnerships
  • ✓Available on multiple mobile platforms
  • ✓Pennington Biomedical validation

Spren Cons

  • ×Separate body-composition subscription
  • ×No transformation projections
  • ×No workout integration
  • ×No nutrition or meal tracking
  • ×Body comp only, not a complete system

Which App Should You Choose?

Choose Spren if:

  • →Users who prioritize clinical validation
  • →Gyms and fitness businesses (B2B API)
  • →Those wanting precise body composition only
  • →People outside the iPhone app audience

Choose FitCommit if:

  • →Users seeking one connected body-composition and nutrition system
  • →Users wanting transformation previews
  • →Those seeking an integrated nutrition + body comp system
  • →People who want workout programming

Pricing Breakdown

FitCommit

3-day free trial

Then $0.99/week. Cancel anytime.

  • ✓AI body scan (body fat %, lean mass)
  • ✓AI food scan
  • ✓Transformation preview (3/6/12 months)
  • ✓TDEE from body composition
  • ✓Macro tracking

Spren

Subscription required

Offers vary by storefront

Try FitCommit Free

AI body scan, transformation preview, and smart macro tracking. See your future body before you build it. 3-day free trial, then $0.99/week. Renews automatically unless cancelled.

Start Free Trial

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