Monitor supplement formula changes with dated label history
Privacy-first location sharing app for families and friends
Stage
Startup
Not given
Founded
2026
Not given
Based in
US
US
Pricing model
Freemium
Freemium
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.
From $4.99/month
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
Real-time location sharing with 5-second refresh
Exact and general area sharing options
Arrival and departure alerts
SOS alerts for emergency situations
Crash detection with live location
Speed monitoring for teen drivers
Driving score based on behavior
Location history for 7 days
Unlimited groups with separate sharing settings
Private mode to pause sharing
What makes it different
Every number carries a date and source
No paid placement and no brand influence
Independent and founder-led company
One subscription covers entire family with no per-person fees
Location data is never sold or exploited
Consent-based sharing instead of surveillance tracking
30-day money-back guarantee
Built by the team behind Surfshark privacy service
FormulaSignal
HeyPolo