Monitor supplement formula changes with dated label history
Lose fat, not muscle
Stage
Startup
MVP
Founded
2026
Not given
Based in
US
Not given
Pricing model
Freemium
Paid
Pricing
Free Locker: up to 24 saved products with no card required. Signal Pro: $29.99/year (or $3.99/month), includes monitoring for up to 10 products checked daily with email alerts for confirmed changes and monthly Stack Brief.
Founding price (early access): $59.99 per year. Planned price after launch: $89.99 per year.
Key features
Free Locker holds up to 24 supplements with dated labels
Daily monitoring of up to 10 products
Email alerts when formula changes are confirmed
Before You Reorder comparison of saved and current labels
561 product listings from 65 brands
Signal Verified labels read and dated twice independently
Product Ask feature for ingredient and formula questions
Category Ledger for supplement brands
REST API and MCP server for developers
Daily protein range tailored to body and appetite
30-minute strength sessions starting with bodyweight or light dumbbells
Weekly muscle check combining weight trend, strength and smart scale data
Apple Health integration
Smart scale body composition trend
Free protein calculator
Guidance based on published research
What makes it different
Every number carries a date and source
No paid placement and no brand influence
Independent and founder-led company
Only app that checks whether weight loss is fat or muscle, not just the number on the scale
Protein ranges automatically adjust for low appetite days common with GLP-1 medications
Works with any weight loss method, not tied to specific medication or diet
Built on evidence from body scan studies of major medication trials
FormulaSignal
Dyadfit