App Blueprint
Calm Signal
Stress relief that knows when you need it
Core Features
Biofeedback Monitor
Continuous passive HRV + heart rate monitoring via wearable SDK
Stress Detection Engine
On-device ML model classifying stress state from HRV variability patterns
Micro-Session Library
60–180 second guided mindfulness sessions matched to stress intensity tier
Progress Dashboard
Weekly stress trend charts, session completion rate, cortisol proxy score
Team Mode
Aggregate anonymous team stress metrics for HR/team leads
Target User
Alex
Senior Product Manager
Pain
Back-to-back meetings spike stress but scheduled apps interrupt at wrong moments
Goal
Manage stress without adding structure to an already over-structured day
Recommended Tech Stack
Monetization Model
Free
$
7 sessions/month, basic dashboard
Pro
$/monthly
Unlimited sessions, full history, wearable sync
Team
$/per seat/month, min 10
All Pro + team analytics
Freemium drives organic growth; Pro conversion target 8–12%; Team channel unlocks B2B revenue without a dedicated sales team
MVP Checklist
What needs to be true before you launch v1.
0/6 completed
Apple Watch HRV integration via HealthKit
Basic stress state classifier (3 tiers: low/medium/high)
10-session mindfulness content library
Push notification trigger on stress detection
User onboarding + wearable pairing flow
Simple 7-day streak + history view
Go-to-Market Strategy
ProductHunt launch → Reddit r/productivity + r/Stress + r/QuantifiedSelf → B2B pilot with 2–3 mid-size tech companies via founder network
Competitive Moat
Reactive trigger model creates habitual use loop that scheduled apps cannot replicate; proprietary user HRV baseline data deepens personalisation over time
Interactive Prototype
Try it: Calm Signal
Explore a working prototype with phone and full-width views.