Context

Double Bagel helps casual tennis players find and join tournaments without the usual scheduling friction. I led product design from the start, working directly with founders and developers from concept through post-launch iteration. My scope covered research, user flows, interface design, brand identity, and the design system.

Existing tennis apps often felt built for serious competitors. Casual players needed an easier way to get into a game. The design challenge was to make joining a tournament straightforward while giving the experience a social, welcoming feel.

Design process

User interviews, app reviews, and a competitor audit pointed to the same friction: casual players found existing tools hard to navigate and too focused on competition. That gave us a clear priority: help people get into a game with less effort.

I translated those findings into an MVP direction with the founders. Journey maps and an interactive prototype made the key flows concrete before development. Gamified apps such as Duolingo informed the tone, while the tennis journey determined what the product needed to do.

I designed 70+ screens across the core journeys and worked closely with developers through implementation. Frequent reviews helped us resolve interaction details and keep iteration moving.

Three priorities shaped the interface:
• A short path from opening the app to joining a tournament
• Clear, encouraging language and useful feedback
• Badges, streaks, and progress that give players a reason to return

Tournament Flow

List of Tournaments

Social features and progress

Design

Branding

I created the brand identity and design system for the app and its marketing. A playful visual language supported the product’s casual positioning, while reusable components gave the team a consistent base for new features.

Typography

Headlines

Acid Green

#C6F600

#19A1FC

Active Blue

Primary Dark

#141E23

Body

5,000+ users in the first year, with no marketing spend.

50+ user interviews helped inform the roadmap. Early feedback highlighted quick onboarding and a feel that was “fun but professional.”

Launch and feedback