Real-revenue cases
Tanion is an app that helps people get an even tan without burning, using real-time UV index, a 10-day forecast, and personalized tanning routines that adapt over time; it earns subscription revenue, with $194/month verified via Stripe.
01
It replaces guessing sun exposure from feel or a generic weather app, which is genuinely useful for people who want a tan without burning. But tanning is seasonal and situational, so subscribers may only need it a few months a year, making it a want rather than a must-have.
Users pay a subscription for UV index data, a 10-day forecast, and personalized tanning routines. Pricing and billing cadence are not stated in the source.
Guessing sun exposure by feel or checking a generic weather app
02
Not mentioned in the source
03
The transferable move: take a public data source (weather, regulations, prices, schedules) plus personal parameters and turn it into a subscription tool for one narrow use case. For AI products, the same structure works — the model converts public data into personal action advice, and you charge for the continuously updated personalized plan rather than a one-off lookup.
04
Revenue basis · Stripe-verified (TrustMRR)
Only a one-line product description and the Stripe-verified $194/month figure; no user counts, conversion, churn, or retention data
No pricing, billing cadence, or payment funnel, so it's impossible to infer how many paying users $194/month represents
No acquisition channel or cold-start detail, so the go-to-market playbook can't be verified