Meet Milo
Your Always-On Health Agent
Milo is the Pulsyn Agent, an autonomous AI that reasons about your health data, catches what you miss, and optimizes your timing. Private by design. Built to think about your health, not your data.
An engineer for your body
Milo doesn't just respond — it reasons. Every insight follows a structured thinking process: analyze, cross-reference, and synthesize.
What’s affecting your energy?
Identifies the right question and selects which tools to invoke.
Sleep score: 62 · Deep sleep: 45min
Pulls last night’s architecture and compares to your baseline.
Found: “Coffee at 4pm” in journal
Finds correlating lifestyle factors from your journal entries.
Late caffeine suppressed deep sleep by 34%
Synthesizes into actionable guidance: caffeine before 2pm this week.
What’s affecting your energy?
Identifies the right question and selects which tools to invoke.
Sleep score: 62 · Deep sleep: 45min
Pulls last night’s architecture and compares to your baseline.
Found: “Coffee at 4pm” in journal
Finds correlating lifestyle factors from your journal entries.
Late caffeine suppressed deep sleep by 34%
Synthesizes into actionable guidance: caffeine before 2pm this week.
Powered by RAG memory, health tools, and multi-step reasoning
See Milo in Action
Step through real conversations to see how Milo turns your health data into personalized guidance.
Good morning! Here’s your overnight summary:
You had one of your best nights this week.
Mission 1 of 5
Your whole day, figured out by the time you finish your coffee.
Milo reads last night's sleep, this morning's HRV, and your recovery trend. Then it maps out exactly when to focus, move, cut caffeine, and wind down. Fresh every morning.
Peak Focus
9:00 – 11:30 AM
Recovery Window
1:00 – 2:00 PM
Caffeine Cutoff
2:00 PM
Exercise Window
4:00 – 6:00 PM
Wind Down
9:30 PM
Peak Focus
Your cognitive peak based on sleep quality and circadian phase.
Recovery Window
Best time for a nap or meditation based on your sleep debt.
Caffeine Cutoff
Last safe caffeine intake to protect tonight’s deep sleep.
Exercise Window
Optimal training window from recovery score and HRV trends.
Wind Down
Begin winding down based on your ideal sleep onset.
Your cognitive peak based on sleep quality and circadian phase.
Best time for a nap or meditation based on your sleep debt.
Last safe caffeine intake to protect tonight’s deep sleep.
Optimal training window from recovery score and HRV trends.
Begin winding down based on your ideal sleep onset.
Your data, your choice
Free keeps everything on-device. Pro unlocks cloud power. Only if you opt in.
Free Plan
Everything stays on your phone
- On-device AI processing (Pulsyn Agent 0.8B/4B)
- No internet required for core features
- All data stored locally on your phone
- Zero data transmission
Pro Plan
You control your data
You control the switch
- Agentic AI with tool use & proactive tracking
- Cloud models for deeper insights
- Zero retention for AI requests · E2E encrypted for sync
Never sold
Your data is never sold to third parties
Never trained on
Your data is never used to train AI models
Never disclosed
Your data is never shared with anyone
Always deletable
Full data deletion on request, immediately
Whether you stay on-device or upgrade to Pro, your privacy is protected. Pro cloud AI requests are processed with zero data retention — answered and immediately discarded, never stored or trained on. Pro cloud sync is end-to-end encrypted with keys only you hold. We will never sell, share, or monetize your health data.[3]
Read our full privacy policyHow Milo works under the hood
A hybrid intelligence stack that keeps your data private while delivering cloud-grade insights.
You
Milo Coach · Alerts · Chat · Reports · Journal
Pulsyn 0.8B + 4B Agents
0.8B always-on + 4B full on-device. Fully private.
Pulsyn 0.8B + 4B Agents
Open-weight large cloud models (fast) + open-source foundation models (deep analysis)
Milo Core
RAG Memory · Health Tools · ReAct Reasoning
Ring Sensors
Sleep · Heart Rate · HRV · Temperature · SpO2 · Activity
By default, raw biometrics never leave your device. Pro cloud AI requests are zero-retention — answered and discarded. Pro sync is end-to-end encrypted.
Pulsyn 0.8B & 4B are our on-device fine-tunes of Qwen 3.5. Pulsyn Pro adds cloud AI powered by open-weight large cloud models via Fireworks.ai.
Milo notices what you miss
Milo runs in the background analyzing your data. When something matters, you'll know.
Early illness signal detected
Your skin temperature rose 0.8°C above baseline while HRV dropped 22%. Consider resting — you may be fighting something off.
Recovery declining — 3-day trend
Your recovery score has dropped from 89 to 64 over 3 days. Training load is outpacing adaptation. Milo recommends a recovery day.
Your sleep architecture changed
Deep sleep down 28% this week. Correlates with later bedtimes (avg shifted 45min). Milo suggests an earlier wind-down Waypoint.
Elevated stress detected
Resting HR elevated during work hours for 3 consecutive days. Journal entries mention deadline pressure. Consider scheduling recovery breaks.
Milo connects the dots between your biometrics, journal entries, and daily patterns, so you don't have to.
Simple, honest pricing
Every Pulsyn ring ships with on-device AI. Upgrade to Pulsyn Pro for cloud-powered analysis.
On-Device AI
- 0.8B always-on model + 4B full on-device model. Fully private, no cloud needed
- Daily health summaries (on-device)
- Sleep, HR, HRV, and temperature tracking
- Milo Coach
- On-device anomaly detection
- Local RAG memory
Included with Rune 1
Pulsyn Pro
Cloud-Powered- Everything in On-Device AI, plus:
- Open-weight large cloud models (fast responses + deep analysis)
- Milo conversational agent with tool use
- Milo Coach + dynamic adjustments
- Proactive illness detection & multi-week trend analysis
- Weekly AI-generated health reports
- Web-augmented insights (latest research)
Ready to meet Milo?
An always-on health agent that thinks, reasons, and respects your privacy. Free on-device AI with every ring.
On-device AI features included free with every Pulsyn Rune 1. Pulsyn Pro is $6/mo.