Case Study · Health · iOS · Web

Quitly

A stop-smoking app with an AI coach, live money and health milestones and real payments. Built to help people actually quit.

iOSWebAI CoachStripeCapacitor
Good evening, Finlay
25 Days Smoke Free
34/100 recovery
Money Saved£157
Avoided252
Quinn

"Day 25. This is who you are now."

HOMEPROGRESSSOSCOACHPROFILE

A coach in your pocket.

Quitting is hard because progress is invisible. Quitly makes it impossible to miss: every hour smoke-free turns into money saved, health regained and a recovery score climbing toward 100. Quinn, the built-in AI coach, sets a plan for the day and is there the moment a craving hits, with a one-tap SOS that escalates to help when it is severe. It runs on the web today with real Stripe payments and an iOS build underway.

PlatformsiOS, Web
StackReact, Vite, Express
AIOpenAI coach (Quinn)
PaymentsStripe, live

Under the hood.

Quinn, the AI coach

An always-on coach that adapts its daily plan and check-ins to how the day is actually going.

Live money + health saved

Real-time counters of cigarettes avoided, money saved and health milestones as they are hit.

Craving SOS

One tap logs how strong the urge is and routes straight to help when it is severe.

Recovery score

A single 0-100 number that captures momentum and nudges the next right step.

Streaks + milestones

Smoke-free streaks and health milestones that make quitting feel like visible progress.

Real payments

Stripe checkout live, plus an iOS build wrapped with Capacitor and Apple IAP.

A look at Quitly.

Good evening, Finlay
25 Days Smoke Free
34/100 recovery
Money Saved£157
Avoided252
Quinn

"Day 25. This is who you are now."

HOMEPROGRESSSOSCOACHPROFILE

The stack.

React 19ViteTailwindExpressOpenAIStripeCapacitorRender

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