16-Type Personality Test and Compatibility App
A 16-type personality test app with career and relationship insights, friend matching and AI-written group profiles.

- Industry
- Built with
- Flutter
- React
- Node.js
- MySQL
The project
A mobile app that helps people understand themselves and the people around them. A short assessment measures four axes of personality preference and maps each user to one of 16 personality types. Users pick a quick, standard or in-depth test, see their profile on an interactive chart and read insights on their traits, career paths, relationships and growth. They can compare results with friends, form circles for family or teams, and, on a premium plan, ask an AI coach questions. The app runs on iOS and Android in several languages, and we handled it end to end, from design to store release.
The challenge
- Long, complex personality tests put people off before they reach a result.
- Results often stopped at a label, with little guidance on careers, relationships or growth.
- People had no easy way to see how their personality fits with a partner, friends or a team.
What we built
- A four-axis assessment in three lengths, with an interactive chart and an honest note when an axis is too close to call.
- Type profiles covering strengths, watch-outs, work, communication, stress and growth, plus a new insight every week.
- Friend matching and group circles with AI-written profiles based on members' actual scores.
- A premium AI coach, a one-off personal edition with a PDF report, and guest mode with no account.
- A Flutter app for iOS and Android with a Node.js and MySQL back end and a React admin panel.
Key features
Three test lengths
Users choose a quick, standard or in-depth test and can retake it at any time.
Interactive profile chart
Results are shown on a chart across the four personality axes.
Weekly type insights
A new insight written for the user's type arrives every week.
Friend compatibility
Two profiles are compared axis by axis to show where people align and differ.
Group circles
Couples, families, friends or teams join by code and get an AI-written group profile.
AI coach
Premium users ask questions about work, relationships and growth, typed or dictated.
Personal PDF report
A one-off purchase rewrites the full profile from exact scores as a report to keep.
Guest mode
People can take the test without an account, with results kept on the device.





