
Toastie
A health tracking app for people with chronic conditions. Over 3 months, I led a team of 5 designers to redesign the Insights page, making complex health data simple, actionable, and visually clear. I directed design quality, ran the process, and handled final UI polish
Role
Design lead
Timeline
Sep 2024 - Nov 2024
Scope
Insights page, data visualisation, design system QA
Problem
Users with chronic illnesses were logging symptoms but getting nothing useful back. The existing Insights page was overwhelming, hard to navigate, and failed to surface patterns or next steps.
Solution
We redesigned Insights around 3 goals:
- Make data glanceable
- Surface actionable alerts
- Help users communicate with doctors through easy data export.
Approach
We had 3 months and a team with mixed experience levels. I ran a hybrid process: waterfall for the first 2 weeks of research, then agile sprints for design and iteration.
I allocated tasks by skill level, with experienced designers on complex screens and newer members on system components.
15/100
original SUS score
2/5
satisfaction score
52
unique symptoms to log
Data before redesign
The Design Evolution
Each main screen went through 3 stages: the original Toastie design, our team's hi-fi iteration, and a final polish pass for visual consistency.
Competitive analysis & testing revealed…
Overwhelming data
"Not sure what I'm looking at…
a bit much."
Tedious logging
"Logging 52 symptoms feels
like a chore"
No actionables
"Feels a bit underwhelming
to use"
Symptom Categories
The original app had 52 individual symptoms to log in a flat list. We condensed them into 9 intuitive categories, cutting average logging time from 58s to 25s.
Users could find what they needed faster, and the category illustrations gave us an opportunity to bring calm warmth into a screen that previously felt chaotic.

Actionable Resources
2 new section we introduced to close the gap between tracking and acting. We added personalised tasks, automated alerts, daily streaks, and a community resources page to help users gain more insight into their conditions and connect with other people experiencing the same illness.
Results
15 → 75
system usability score
52 → 9
symptom categories
58s → 25s
faster logging time
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