Cyventine — Quit Program
Product design, Development, Health
Cytisine is a quit-smoking course: 100 tablets over 25 days, stepping down from six doses a day to one. Get the timing wrong and it fails. I designed and built Cyventine, its companion app, with the website and campaign.
- Role
- Product Designer and Engineer
- Team
- Through Owlry
- Timeline
- 2026
- Platform
- iOS, Android and web
100
tablets
25
days
On-device
v1 stays on the phone
The problem
A schedule that changes five times in 25 days
People quitting are already under strain. An app that nags or loses track makes it harder.
The cytisine schedule
Six doses a day down to one
Who it is for
- 3,000,000+
Cigarette smokers in Australia
- 61%
Vape
- 32%
Use nicotine replacement therapies
My role
End to end
Through Owlry, I did the design, the iOS and Android build, the website and the campaign.
The process
The schedule is the product
I treated the schedule as the product, designing for missed doses, late starts and moving the first dose.
How much the app should know
I weighed three options against compliance, security and launch time.
Full user accounts, in the app
Managed in the app.
Benefits
- Full journey tracking
- Email nurture
- Rich insights
Considerations
- Highest compliance burden
- Sensitive data stored
- Extra security
- Longer App Store approval
Website-managed accounts
Managed on the website.
Benefits
- Some user tracking
- Email automation
- Faster app release
Considerations
- Website security needed
- Ongoing account management
- Compliance still applies
Anonymous analytics
Anonymous events and trends only.
Benefits
- Fastest to market
- Lowest compliance overhead
- Simpler security
- Group insights, like how many reset their journey
Considerations
- No individual tracking
- No email nurture
- No personalised data
The solution
Kind about a missed dose
The day, at a glance
The day rolls at midnight. Reminders carry their label, “dose 3 of 5”, so people always know where they are.
No renumbering, no nagging
A missed dose is quietly dropped, never hidden by renumbering, and the next keeps its label. After day 25 the app marks the journey complete and stops.
One rule with teeth
Nothing leaves the phone
In version one, the schedule, progress and settings stay on the device.
The website around it
The impact
Ready for release
Built with Ionic React, Capacitor, React 19 and TypeScript for iOS 15+ and Android 7+, it is ready for TestFlight and a signed Android bundle, pending clinical sign-off.
Reflection
Design and code in step
Building it myself kept the logic and interface in step. Every design rule had a test in the code.
Through Owlry
