> For the complete machine-readable documentation index, see [llms.txt](/llms.txt). Full corpus: [llms-full.txt](/llms-full.txt).

# Vital signs from any camera — Presage SmartSpectra SDK

Turn any smartphone or webcam into a real-time vitals sensor. No wearables, no contact sensors — just a camera and a platform SDK.

- [Get API Key](https://physiology.presagetech.com/auth/login)
- [Read the Docs](https://smartspectra.presagetech.com/docs/)
- Now enrolling: [St. Louis, MO — Research Study](https://calendly.com/jim-hrvp/research-study-1?utm_source=presagetech_com&utm_medium=website&utm_campaign=stlouis_research_study)

## FDA cleared

Regulatory milestone · K254169

- **Heart rate:** 1.32 BPM RMSE
- **Breathing rate:** 1.75 BrPM RMSE
- **iOS & Android:** Free for everyone

SmartSpectra Vital Signs Monitor 1.0 received FDA 510(k) clearance (K254169) for heart rate and breathing rate on iOS and Android — and those cleared metrics are free for all through the 1.0 SDK: hospitals, clinics, health organizations, educators, and developers.

## Integrate in minutes, not months

Robust wrappers for every major platform. Start extracting vitals with a few lines of code — or hand the quick start to your favorite AI coding tool.

How it works:

1. **Drop the SDK into your app** — Install with your package manager, add the measurement view.
2. **Point a camera** — Any phone, laptop, or webcam. No wearables, no calibration.
3. **Extract vitals in real time** — Pulse, respiration, HRV — processed on-device, streamed to your app or LLM via SDK or REST.

Quick start docs are available for Swift, Kotlin, C++, Python, JavaScript, and Java at [/docs/quickstart.md](/docs/quickstart.md).

## Discover what you can measure

One camera. Every signal below.

### Vital signs & breathing

- Heart rate — *FDA cleared*
- Respiratory rate — *FDA cleared*
- Heart rate variability (HRV)
- Blood pressure changes (uncalibrated)
- Pulse waveform

### Facial expressions & speech

- Micro-expressions & facial action units
- Lip & speech activity
- Blink rate & eye tracking

Accuracy depends on lighting and motion. Metrics beyond heart rate and breathing rate are not FDA cleared.

## Frequently asked questions

**What is SmartSpectra and how does it work?**
SmartSpectra is a contactless health-sensing SDK that turns any camera into a real-time biometric sensor. It tracks facial and chest movements to extract anonymized health metrics including pulse rate, breathing rate, HRV, and more — all without requiring any wearables or physical contact.

**Which platforms and programming languages does SmartSpectra support?**
SmartSpectra supports iOS (Swift), Android (Kotlin), and cross-platform C++ on Linux, macOS, and Windows, plus Web (JavaScript/TypeScript). Native SDKs are available for each platform with a unified API.

**How does Presage protect privacy and handle user data?**
Privacy is built into SmartSpectra by design. All processing happens on-device — no facial images or video are stored or transmitted. Only anonymized metrics are used (with consent) for algorithm improvement.

**Is SmartSpectra FDA-cleared?**
Yes. SmartSpectra Vital Signs Monitor 1.0 SDK has FDA 510(k) clearance (K254169) for contactless pulse rate and breathing rate measurement on iOS and Android. Other metrics available through the broader SmartSpectra platform — such as HRV, breathing waveforms, and facial expression analytics — are not part of the cleared indication and are intended for wellness and research use.

**Is there a free tier?**
Yes. The Community Edition is free with no credit card required — 10K virtual sessions/month, all SDK features, and community support via Discord. Perfect for prototyping and non-commercial use. Pro is just $99/month for up to 5k users.

**I want the tech but don't have a developer.**
No developer — no problem. We can host your UI and personalized activities for your users on our Coherence by Presage Tech app. These are easily customizable — no coding required. Contact support@presagetech.com to get started.

Still have questions? Email [support@presagetech.com](mailto:support@presagetech.com).

## Simple, transparent pricing

Start free. Scale as you grow. No credit card required. All AI token credits included for your users.

### Community — Free
Perfect for prototyping and personal projects.
- 10K virtual sessions/mo
- 150 Insight Tokens/mo
- All SDK features
- Community Discord support

### Pro — $99/mo
For production apps with up to 5k real users. AI included at cost.
- Unlimited measurements
- 6.5M Insight Tokens/mo
- Storage & reference data
- BYO-LLM option

### Platform — $500+/mo
For high-volume teams scaling to 30K users.
- 35M Insight Tokens/mo
- FHIR / SSO / audit logs
- 99.9% SLA
- All Pro features

### Regulated — Custom
For regulated, on-prem, and government systems.
- Clinically validated algorithms
- FedRAMP / government systems
- Medical-grade SLA
- On-premise option
- Contact: support@presagetech.com

Full pricing details: [/docs/pricing.md](/docs/pricing.md)

## Ready to build with human sensing?

Sign up for updates, SDK releases, and developer resources. Building something cool? [Contact us](mailto:support@presagetech.com) — we'd love to help you ship it.

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