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Lumen vs Function Health

Side-by-side comparison of two indie startups from the Startup Spotlight directory.

Option A
Lumen

Lumen

Health

The world's first hand-held metabolism tracker.

Lumen is a breath-analysis device that reveals whether your body is burning carbs or fat — and tailors nutrition guidance accordingly.

Founder
Daniel Tal
Founded
2014
Team
51-200
Listing
Free (nofollow)
Listed
May 2026
View Lumen →
Option B
Function Health

Function Health

Health

100+ lab tests, twice a year.

Function offers comprehensive annual lab testing and clinician-led insights — turning your blood work into an actionable longevity plan.

Founder
Jonathan Swerdlin
Founded
2020
Team
51-200
Listing
Free (nofollow)
Listed
May 2026
View Function Health →

See more alternatives

Lumen alternatives →Function Health alternatives →