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Pulsyn
Agentic Wellness Intelligence

Meet Milo

Your Always-On Wellness Agent

Milo is the Pulsyn Agent, an autonomous AI that reasons about your wellness data, surfaces the trends you would miss, and tunes your timing. Private by design. Built to think about your wellness, not your data.

"Your HRV is trending below your weekly average. Here is what changed alongside it."
On-device AI included free Data anonymized, never sold[2] Agentic reasoning with tool use

An engineer for your wellness

Milo doesn't just respond — it reasons. Every insight follows a structured thinking process: analyze, cross-reference, and synthesize.

Think
plan_actions

What’s affecting your energy?

Identifies the right question and selects which tools to invoke.

Analyze
analyze_sleep

Sleep score: 62 · Deep sleep: 45min

Pulls last night’s architecture and compares to your baseline.

Search
search_history

Found: “Coffee at 4pm” in journal

Finds correlating lifestyle factors from your journal entries.

Insight
generate_insight

Late caffeine suppressed deep sleep by 34%

Synthesizes into actionable guidance: caffeine before 2pm this week.

Powered by RAG memory, wellness tools, and multi-step reasoning

See Milo in Action

Step through real conversations to see how Milo turns your wellness trends into personalized guidance.

Milo
Morning Briefing
Good morning, Milo! How did I sleep?
✓ analyze_sleep
Sleep Score 87/100
Deep Sleep 1h 42m
HRV 58ms (above baseline)
Recovery Fully recovered

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.

9:00 – 11:30 AM

Peak Focus

Your activity and focus window, based on recent sleep patterns.

1:00 – 2:00 PM

Recovery Window

Best time for a nap or meditation based on your sleep debt.

2:00 PM

Caffeine Cutoff

Last safe caffeine intake to protect tonight’s deep sleep.

4:00 – 6:00 PM

Exercise Window

Optimal training window from recovery score and HRV trends.

9:30 PM

Wind Down

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.

$0/month

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
Local-only privacy
$6/month Cloud-Powered

Pro Plan

You control your data

Keep Local
Cloud Sync

You control the switch

100x more power
Faster speeds
  • Agentic AI with tool use & proactive tracking
  • Cloud models for deeper insights
  • Zero retention for AI requests · E2E encrypted for sync
Control your privacy mode

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 policy

How 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

Free On-Device Processing

Pulsyn 0.8B + 4B Agents

0.8B always-on + 4B full on-device. Fully private.

Zero data leaves your device
Pro Cloud-Enhanced Agent

Pulsyn 0.8B + 4B Agents

Open-weight large cloud models (fast) + open-source foundation models (deep analysis)

Zero retention for AI · E2E encrypted for sync

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 reading your trends. When something shifts, you'll see it.

+0.8°C temp

Skin temperature above your baseline

Your skin temperature rose 0.8°C above your baseline while HRV dropped 22%. Both are logged in your trend view.

89 → 64

Recovery declining — 3-day trend

Your recovery score dropped from 89 to 64 over 3 days, while your training load kept climbing. Your body may benefit from a lighter day.

–28% deep sleep

Your sleep architecture changed

Deep sleep down 28% this week. Correlates with later bedtimes (avg shifted 45min). Milo suggests an earlier wind-down Waypoint.

3 days elevated

Resting HR elevated this week

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.

Pulsyn Rune 1 is a general wellness device. It is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent any medical condition or illness.

Simple, honest pricing

Every Pulsyn ring ships with on-device AI. Upgrade to Pulsyn Pro for cloud-powered analysis.

On-Device AI

Free with every ring
  • 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 every ring

Included with Rune 1

Pulsyn Pro

Cloud-Powered
$6 /month
  • 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
  • Multi-week wellness trend analysis
  • Weekly AI-generated wellness reports
  • Web-augmented insights (latest research)
Premium AI experience

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.