SignPal
A research-driven UX project designing an accessible sign-language learning app — from user research through high-fidelity Figma prototype to two rounds of usability testing.
Overview
SignPal addressed a real accessibility gap: most people who want to learn sign language to communicate with Deaf or hard-of-hearing family members have very limited quality digital options. I designed a solution using a full human-centred design process.
Starting from research, I worked through user research, persona development, journey mapping, wireframing, high-fidelity Figma prototyping, and two rounds of moderated usability testing with real participants.
Problem Space
466M+
people worldwide with disabling hearing loss (WHO)
90%
of Deaf children are born to hearing parents
Limited
quality digital tools exist for casual learners
Research & Design Activities
- Conducted desk research into sign-language learning barriers for Deaf and hard-of-hearing communities
- Developed user personas representing distinct learner profiles across age and sign-language familiarity
- Created user journey maps illustrating pain points in existing tools
- Designed low-fidelity wireframes for initial concept exploration
- Built interactive high-fidelity Figma prototype covering onboarding, lessons, and progress tracking
- Planned and facilitated two rounds of moderated usability testing with real participants
- Synthesised findings into a structured report with prioritised design recommendations
- Iterated on prototype design based on testing insights
Key Design Decisions
Accessible First
All components to WCAG AA — high contrast, large tap targets, screen-reader-friendly labels.
Progressive Disclosure
Lessons structured to introduce concepts gradually, reducing cognitive overload.
Immediate Feedback
Visual feedback on lesson completion and sign accuracy to reinforce learning.
Inclusive Iconography
Custom icon set with clear hand-gesture illustrations rather than ambiguous photos.
Usability Testing Findings
- 1Navigation hierarchy simplified after participants struggled to find the lesson library from the home screen
- 2Speed controls added after users wanted to replay signs at slower speeds
- 3Onboarding goal-setting extended so users can specify who they are learning for
- 4Colour contrast ratios adjusted across all key screens to pass WCAG AA
Why This Matters
SignPal shows I can approach product design from a research-first mindset — validating decisions with real users before shipping. It demonstrates the kind of thinking that produces software people actually want to use.