VO2Master.
On the big screen.

Why desktop?

• Tiny phone screen — During a VO2max ramp test, you need to see chart, metrics, and protocol stage at a glance. On a phone, you're constantly scrolling.
• No FTMS trainer control — The VO2Master app can read power data, but can't control your smart trainer's resistance. OpenSpiro sends automatic watt targets per protocol stage.
• No VT1/VT2 detection — OpenSpiro automatically detects ventilatory thresholds and marks them on the chart. No manual analysis needed.

OpenSpiro brings your VO2Master to the big screen. Full-size charts, all metrics visible at once, and automatic trainer control — things a phone app can't do.

VO2Master Manager App vs. OpenSpiro

Built for coaches and studios

If you run a coaching business or a performance diagnostics studio, OpenSpiro gives your VO2Master the software it deserves:

• Fullscreen dashboard on a large monitor — your athlete sees their data live
• Power meter + smart trainer in the same session — no manual merging
• Switch between athlete profiles in seconds — no re-login
• Guided protocols with individual watt thresholds per athlete
• Session replay for post-test review with your athlete
• CSV/JSON export for your own analysis tools
• 100% local — no cloud, no subscription, no data leaving your machine

OpenSpiro is not affiliated with VO2 Master Health Sensors Inc. VO2Master is a trademark of its respective owner.