Monitor supplement formula changes with dated label history
Stage
Not given
Startup
Founded
Not given
2026
Based in
NL
US
Pricing model
Paid
Freemium
Pricing
Not given
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.
Key features
MARS red light panels with wavelengths from 480 to 1060 nm
Multiple nasal strip styles for different preferences
Three mouth tape shapes (H-Shape, X-Shape, Advanced)
4D sleep mask for light blocking without pressure
3 year commercial warranty on eligible devices
60 day trial period including opened products
App, touchscreen and remote control for select panels
Infrared heat lamps for local warmth
Daylight lamp with 10,000 lux
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
What makes it different
Dutch brand with clear product information and practical designs for everyday use
60-day trial period on all orders, including opened products
Available through multiple online retailers across Europe
Comprehensive customer support with fast response within 24 hours
Resty®
FormulaSignal