GTM Sauce

B2C · kickboxing workout app

How Oomph grows

2 tactics and 1 figures from 1 interview.

About Oomph

What it is
Workout app the guest ran for years with App Masters' help; never scaled
Business model
subscription with high-ticket nutrition coaching upsell
Outcome
Never scaled; some monthly subscribers still paying after six years

As described in the interviews, not independently verified.

Oomph's 2 tactics

Oomph · B2C · kickboxing workout app

Turn the most-used feature of an old app into a new standalone app
Led to FaithFull, which now converts 7.21% of installs to paid

The last feature added to the Oomph workout app was AI calorie tracking via an SDK. Seeing many users actually use it (fast logging, AI trending), the founder built a new app around it, adding the faith angle.

Workedvalidationfeature-development
App Masters · 2026-05-09

FaithFull · B2C · calorie tracker for Christians

Offer app users weekly one-on-one coaching as a pricey add-on
Founder says it has been 'really cool'; no numbers

In Oomph, app users were upsold to a sales call and closed on a high-ticket nutrition coaching program. FaithFull now does the same: users upsell out of the app into weekly high-ticket coaching with coach Natalie.

Unknownupsell-expansion
App Masters · 2026-05-09

Oomph by the numbers

MetricValueContextSaid in
ltvannual beats monthly even with monthlies still paying after six years
approximate
Oomph plan LTV comparisonApp Masters
2026-05-0925:14

Topics

Upsells and expansion revenue1Validating an app idea before building1

Interviews