The promise of a smartwatch is that it knows you. It tracks your heart rate, your sleep, your stress. But for Dhruv Adhia, co-founder of Prana Labs, that data was a starting point, not an end. The real goal was to close the loop, to turn measurement into intervention. His company’s answer is Vayu, an app that uses the sensors already on your wrist to guide your breathing in real time, aiming to move digital wellness from passive tracking to active, biofeedback-driven regulation [TechCouver, July 2026].
It is a bet on a specific kind of patient outcome: the reduction of acute stress and the improvement of heart rate variability (HRV), a biomarker linked to autonomic nervous system resilience. For a population navigating daily anxiety and workplace burnout, the standard of care is often a meditation app on a phone screen or a referral to a stress management course. Prana Labs is proposing a more integrated, physiological alternative, one that lives on the device people already wear [HR Reporter, October 2026].
The biofeedback wedge
Vayu’s technical wedge is its focus on screen-free, haptic guidance. While countless apps offer guided breathing, most require you to watch a visual pacer on your phone. Vayu instead uses the smartwatch’s vibration motor to cue inhalation and exhalation, a design choice led by co-founder and Chief Design Officer Deepali Raiththa, whose background explores the intersection of art, the body, and breath [PERPLEXITY SONAR PRO BRIEF]. The app pulls heart rate and HRV data from the watch to inform session length and difficulty, creating what the company describes as an AI-personalized biofeedback loop [Kate Culver - D-Wave | LinkedIn].
This positions Vayu at a curious regulatory crossroads. It is a consumer wellness product, not a medical device requiring FDA clearance. Yet its mechanism of action,using biometrics to modulate a physiological state,touches the edges of digital therapeutics. The company’s participation in programs like NVIDIA Inception and NEXT AI 2026 suggests a focus on technical validation, though peer-reviewed clinical data on Vayu’s specific efficacy is not yet part of the public record [PERPLEXITY SONAR PRO BRIEF].
Funding and founder momentum
The company, founded in 2025, has raised approximately $500,000 to date through a combination of grants and growth funding. A $150,000 round was reported in November 2025, followed by another $350,000 in government-backed support and grants through mid-2026 [Business Wire, November 2025] [TechCouver, July 2026]. The founders bring complementary histories: Adhia is a technologist with a two-decade personal practice of pranayama (yogic breathing) and a prior co-founding role at H+ Technology, which he says achieved an exit at an $85 million valuation. Raiththa contributes 15 years of design exploration focused on embodiment [PERPLEXITY SONAR PRO BRIEF].
Nov 2025 Growth Funding | 150 | K USD
2025-2026 Grants & Support | 350 | K USD
Traction, as reported by the company, sits at over 70,000 downloads for the Vayu app [Vayu App, retrieved 2026]. The product is free to download with a premium tier offering curated sessions, analytics, and an AI assistant. A version for children, Vayu Kids, is listed as in development, indicating a planned expansion of the user base [PERPLEXITY SONAR PRO BRIEF].
The crowded field of calm
The primary risk for Prana Labs is one of context and evidence. It operates in a wellness category saturated with apps claiming to reduce stress, where user retention is famously difficult and clinical validation is sparse. While the haptic, watch-first approach is a differentiator, it must compete for wrist real estate and user attention against giants like Calm and Headspace, which also offer breathing exercises, and against the native stress-tracking features built into watchOS and Wear OS.
The company’s most plausible answer lies in its focus on the biofeedback mechanism itself. If it can generate and publish data showing that its HRV-informed, haptic-guided sessions produce a measurably stronger or faster physiological response than audio-only or screen-based alternatives, it could carve out a defensible niche. The planned move into organizational wellness sales provides a potential B2B revenue path that is less reliant on fickle consumer app store dynamics [PERPLEXITY SONAR PRO BRIEF].
What to watch in the next year
The next twelve months will test whether Vayu can transition from an interesting app to a sustainable business. Key milestones are likely to include:
- The first enterprise pilot results. The company has mentioned making initial pilot results public, though the partner remains unnamed. A published case study with a corporate wellness client would be a strong signal [TechCouver, July 2026].
- Progress on Vayu Kids. Launching a dedicated product for children would open a new market segment and testing ground for the biofeedback concept.
- The next funding round. With a reported target of a $1.2 million pre-seed round and $350,000 already committed as of July 2026, closing that round would provide runway to accelerate development and marketing [TechCouver, July 2026].
For now, Prana Labs is serving a patient population defined not by a single disease code, but by a pervasive modern condition: chronic, sub-clinical stress. The standard of care for this today is often self-directed,a podcast, a meditation app, a wellness webinar. Vayu’s proposition is that the care can be smarter, responding directly to the body’s signals through the computer already strapped to your wrist. The ambition is to make stress management not just mindful, but measurable.
Sources
- [Business Wire, November 2025] Prana Labs Secures $150K to Advance Vayu, Its AI-Guided Breathwork and Mindful Technology Platform | https://www.businesswire.com/news/home/20151111327460/en/Prana-Labs-Secures-$150K-to-Advance-Vayu-Its-AI-Guided-Breathwork-and-Mindful-Technology-Platform
- [TechCouver, July 2026] Vayu by Prana Labs Wants Smartwatches to Do More Than Measure Stress | https://techcouver.com/2026/07/27/vayu-by-prana-labs-wants-smartwatches-to-do-more-than-measure-stress
- [HR Reporter, October 2026] Mindfulness at work can help employees keep pace with AI, expert | https://www.hrreporter.com/focus-areas/wellness-mental-health/mindfulness-at-work-can-help-employees-keep-pace-with-ai-expert/394961
- [PERPLEXITY SONAR PRO BRIEF] Company briefing on Prana Labs and Vayu
- [Kate Culver - D-Wave | LinkedIn] Post describing Prana Labs' technology | https://www.linkedin.com/in/kate-culver-333388143/
- [Vayu App, retrieved 2026] App store description and company-reported download figure