A ZeroState Labs project · created by Sultan A.

The nursery should
not be in the cloud.

Hearth is a local-first AI hub that watches, listens and understands the nursery — so parents can rest, and their child's data stays at home. No cloud, no subscription required, no video that ever leaves the house.

the mission
Mission

A calm, trustworthy second set of eyes on the baby.

Give every parent a calm, trustworthy second set of eyes on their baby — one that runs in their own home, answers to them alone, and never turns their child into a data product.

New parents are sold anxiety. The baby-monitor market has moved from a simple radio to a camera, an app, a subscription, and a cloud that stores months of nursery video and biometric data on a vendor's servers. We believe the intelligence belongs in the home — a hub the size of a paperback, watching the crib, listening for cries, tracking the room, and working with the vital-sign wearables families already own, with every frame of video and every heartbeat processed and stored inside the house.

The problem

Everyone else is stuck with the cloud.

The technically capable minority already solve this with weekends of open-source home-automation tinkering. Everyone else has no alternative.

Cloud dependence

Leading connected monitors stream nursery video to remote servers by default. Core features stop working during outages, subscriptions rise, and some products have been bricked when the vendor moved on.

Fragmentation

Camera, pulse-ox sock, room thermometer and sleep log each have their own app, none of which talk to each other. A parent gets four notifications about one event, or none about the one that mattered.

Alert fatigue

Single-sensor alarms fire on a loose sock or a passing car. Parents learn to ignore them, which defeats the purpose of having a monitor.

Privacy as afterthought

Infant biometric and video data is among the most sensitive a household produces, yet it is routinely retained, analysed, and in some cases shared under broad consent language.

The product

A small home hub and companion app.

Hearth connects to a nursery camera, a room sensor, and optionally an Owlet Dream Sock, and runs all analysis on the device.

Movement & position

Knows whether the baby is asleep, restless, awake, rolled, or climbing — from the camera, on-device.

Sound & cry understanding

Distinguishes a brief fuss from a sustained cry, a cough from background noise, and tells you which.

Room environment

Tracks temperature, humidity, light and noise; can drive a fan or air conditioner to keep the room in the safe range.

Visual condition cues

Flags face-covered, uncovered, and — under controlled lighting — noticeable skin-tone change versus the child's own baseline, always with a snapshot for the parent to judge.

Vital signs, via Owlet

Pulls heart rate, oxygen and skin temperature from the family's existing sock and cross-checks them against movement and sound, so a loose sock reads as a loose sock.

One calm notification stream

Fuses every signal into a single state and notifies on meaningful changes, not raw readings. Adult-in-room and quiet-hours awareness built in.

Plain-language summaries

"How did she sleep last night?" answered by a small language model running on the hub, from the day's event log.

Local by architecture

Video never leaves the LAN. Privacy is a property of the design, not a promise in a terms-of-service document.

Open at the edges

Works with any standard IP camera and any common room sensor. Parents aren't locked into our hardware, and we aren't locked into any one supplier.

What it is not: Hearth is a parental awareness tool, not a medical device. It does not claim to detect or prevent SIDS, and it does not replace the independent alarms on the Owlet or the parent's own judgement. Every alert is a prompt to look. This positioning is a deliberate regulatory and ethical choice, and it is also the honest one.
Why now

The pieces finally exist. Nobody has assembled them.

01

Edge AI is cheap

A sub-$200 mini PC or single-board computer can now run real-time object detection, pose estimation and audio classification simultaneously — three years ago this required a cloud GPU.

02

Privacy is now a purchase criterion

Camera-vendor breaches and subscription backlash have made "local" a feature consumers ask for by name, well beyond the enthusiast niche.

03

The open-source stack is mature

Home Assistant, Frigate and the surrounding ecosystem have proven the architecture with millions of installs. Our job is to productise it for a specific, high-value moment in a family's life, not to invent it.

04

The wearable exists; the integration does not

Owlet is in hundreds of thousands of nurseries. No product today combines its vitals with camera context. Community integrations show the demand; a supported product does not yet exist.

Market & business model

Hardware is the product. The subscription is a convenience.

Our first customer already owns, or is about to buy, a premium connected monitor and a pulse-ox wearable — concentrated, reachable through the same channels that sell the wearables, and highly motivated by privacy and reliability. The model is intentionally the inverse of the incumbents: this is cheaper to support, aligns with the privacy promise, and earns trust that compounds into referrals in a category driven almost entirely by parent-to-parent recommendation.

Hub hardware

A pre-configured hub with accelerator, sold at a healthy margin over commodity components. One-time purchase; the customer owns it outright.

Starter bundle

Hub plus a vetted camera and room sensor for parents who want one box.

Optional Hearth Plus

Not required for core function. Covers secure remote access, cloud-free backup coordination between family devices, priority support and early model updates.

Partner integrations

Co-marketing and, where possible, supported integration agreements with wearable and camera vendors.

Expansion path: toddler and child-room monitoring on the same hub, elder care (the same fusion of movement, sound, environment and wearable vitals maps directly onto ageing-in-place monitoring), and pet or general home awareness as a retention play once the hub is in the house.

Roadmap

Prototype to pilot to launch, over the next year.

Prototype

Working hub on reference hardware: movement, cry, environment, Owlet cross-check, single notification stream. Founding-team nurseries.

Complete / in progress

Pilot

50–100 households from parent communities and wearable-owner groups. Measure false-alert rate, setup time, and retention.

Next 6 months

Launch

Pre-configured hub and starter bundle; companion app on iOS and Android; direct-to-consumer and one retail partner.

12 months

Partnerships

Supported integration with at least one wearable vendor; camera vendor bundle.

12–18 months

Adjacent markets

Toddler profiles; elder-care pilot.

18–24 months
Key risks, and how we manage them

Named honestly, not hidden.

Wearable API dependencyOwlet offers no official third-party interface; integration relies on a community-maintained one that can break. The product is fully functional without vitals, degrades visibly and gracefully, and we pursue a formal partnership early.
Regulatory perceptionAnything near infant vital signs invites medical-device scrutiny. Mitigated by consistent non-medical positioning, conservative language in product and marketing, and legal review of every claim.
Trust and liabilityA missed event is a reputational catastrophe. Mitigated by self-monitoring that alerts loudly on any sensor failure, alerts that always include a snapshot, and a design rule that the system fails toward "go and look".
Incumbent responseA major vendor could add local processing, but they are structurally committed to subscription revenue and cloud data — our openness to third-party cameras and sensors is something they cannot easily match.
Setup complexityThe enthusiast stack is hard. The entire company exists to remove that; pilot success is measured in minutes-to-first-alert.
Read the full paper

The detail behind this page.

This site is the pitch. The full white paper covers the market, business model, technology layers, and roadmap in detail.

Where we are

We're building the baby monitor we wanted and could not buy: smart enough to be useful, honest enough to be trusted, private enough that the nursery stays a nursery.

Hearth moves from working prototype to pilot and launch over the next year: hardware design and certification for the hub, the companion app, a pilot programme with real families, and the first partnership conversations with wearable and camera vendors.