Corporate wellness software is not one market. It is four markets that share a budget line, and most buying mistakes come from comparing tools that were never solving the same problem.

This guide separates the categories, explains what each is genuinely good at, and covers the metric that determines whether any of them returns anything: sustained engagement.

Disclosure: Vayu is our product. We have included it in the measurement-first category below and tried to be specific about where the other categories are the better fit, because a buyer's guide that concludes you should buy the author's product is not useful to anyone.

The Four Categories

Clinical mental health platforms provide therapy and psychiatry access, usually with licensed providers and a defined care pathway. This is the right category when your driver is clinical need, benefits parity, or reducing behavioural health claims. It is the most expensive tier and the one your benefits team will scrutinise most closely.

Meditation and content libraries supply large catalogues of guided audio, sleep content, and mindfulness courses. Strong for breadth, familiar to employees, easy to launch. The weakness is measurement: content consumption is the metric, and content consumption is not a health outcome.

Fitness and perk aggregators bundle gym networks, studio access, and app subscriptions into one benefit. Good perceived value and useful for recruiting. They address physical activity rather than stress physiology, and utilisation tends to concentrate among employees who were already active.

Measurement-first tools instrument a specific physiological signal and train against it. Narrower scope than a content library by design, with the trade that there is an objective number to report at the end of a pilot.

The Question That Actually Decides It

Ask any vendor for sustained engagement at 30 and 90 days, expressed as a percentage of enrolled employees, not of downloads.

This single question separates the field faster than any feature comparison. Wellness app engagement decays sharply, and a platform serving 5 percent of your workforce in month three is not producing a return regardless of how comprehensive its catalogue is. Category-average 30-day retention for health apps sits in the low twenties percent. Vayu's is 64 percent, roughly 2.5 times the category average, which is the number we would want a buyer to interrogate hardest if the roles were reversed.

Vendors who cannot answer this question with a number usually cannot answer it.

What to Compare, in Order

Sustained engagement at 90 days, as a share of enrolled employees. Everything else is downstream of this.
Whether an outcome is measured at all. Session counts are activity. Changes in a physiological or validated psychometric measure are outcomes.
Time to value. A tool requiring a six-week rollout and manager training has a different risk profile from one an employee can use in two minutes.
Privacy posture. Whether individual-level data reaches the employer, and whether aggregate reporting has a minimum cohort size. Get this in writing.
Device requirements. Anything requiring a specific wearable excludes part of your workforce immediately.
Real per-employee cost at your actual enrolment rate, not list price at 100 percent adoption.

Where Breath-Based Tools Fit

Breathing sits in an unusual position in this market. It is the only voluntary input that directly and immediately changes autonomic state, it requires no equipment, and the effect is measurable within a single session through heart rate variability.

That makes it well suited to the measurement-first category and poorly suited to replacing clinical care. A breathing tool is not a substitute for a therapy benefit, and any vendor implying otherwise should be treated with suspicion. What it can do is address the acute, high-frequency stress load that clinical platforms are too heavyweight to reach, the 90 seconds before a difficult meeting rather than the standing appointment on Thursday.

Vayu in This Category

For transparency, here is our own position, stated the way we would want a competitor to state theirs.

Dimension	Detail
Approach	Haptic-guided breathwork with HRV-adaptive pacing, on the wrist rather than the phone
Devices	Apple Watch and Wear OS, 68+ models
Scale	70,000+ downloads, 65,000+ users, 15+ countries, 4.8 rating
Engagement	64% 30-day retention, about 2.5x category average
Evidence	199-participant pilot, preprint under peer review; SFU Metacreation Lab and NRC IRAP pilot reported −16% perceived stress and +28.6% HRV
Teams pricing	$4 to $8 per employee per month, depending on size
Pilot	Free 30-day pilot for teams of 25 or more

Where we are the wrong choice: if you need clinical care delivery, a broad content catalogue for a diverse population, or a physical fitness benefit, one of the other three categories will serve you better. Several buyers run a content library and a measurement tool together, which is a reasonable combination.

How to Run the Evaluation

Pilot before committing. A 30 to 90 day pilot with a defined cohort answers more than any vendor demo, and the structure matters more than the length.

Pick a single team of 25 or more rather than spreading thinly across the organisation
Baseline before launch with a validated instrument, the Perceived Stress Scale is the common choice, and measure again at the end
Track enrolment, 30-day engagement, and 90-day engagement separately
Agree the success threshold with the vendor before starting, in writing
Confirm the privacy model before a single employee enrols

A wellness tool nobody opens in month three costs more than one that was never bought, because it also spent your credibility with employees.

Key Points

Corporate wellness software splits into clinical platforms, content libraries, fitness aggregators, and measurement-first tools, which solve different problems.
Sustained 90-day engagement as a share of enrolled employees is the decisive metric, and most vendors avoid quoting it.
Measure outcomes, not activity; session counts are not results.
Breath-based tools complement clinical benefits rather than replacing them.
Run a structured 30 to 90 day pilot with a baseline measure and a pre-agreed success threshold.