Email copied
Get in Touch

Toastie

A health tracking app for people with chronic conditions, taken on as a live client project through Prodigi, university design society. I joined as project manager, then stepped into the design lead role when the project fell behind and needed stronger design ownership. Over 3 months I directed 4 other designers on a redesign of the Insights page, turning complex health data into something glanceable and actionable. I set the quality bar and ran the process, and as the deadline closed in I carried a large share of the design work myself.
Role
Design lead
Timeline
Sep 2024 - Nov 2024
Skills
User research
Project management
Quality assurance
Prototyping
Tools
Figma
Notion
Dovetail
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
Team bonding and live ideation day

Approach & challenge

Approach &
challenge

Approach & challenge

Initial approach

Initial approach

I ran a hybrid process: two weeks of waterfall research to get the team aligned on scope fast, then agile sprints for design and iteration. I allocated tasks by experience, stronger designers took the complex screens, newer members built out system components. I also rotated assignments over time so no one was stuck on the smaller UX work for the whole project, everyone got a turn on the more engaging screens.

Late-stage approach

With the initial structure, we were projected to fall behind schedule, which required me to be more hands-on. The team had strong research skills but mixed design ability. Early hi-fi outputs weren't at the quality bar the client expected, and iteration cycles were taking longer than our 3-month timeline could absorb.

Research

Research

Research

Market gap

We analysed 13 symptom-tracking apps and found a common gap in the market.
  • Flo charges $13.99 a month for insights.
  • Clue charges $9.99, and won't let you export data.
  • Chronic Insights charges $59.99 for advanced insights.
  • Nerva is $200 a year with no cheaper tier.
Toastie gave insights away free, but every symptom had its own separate data page, so nobody could see information holistically. So, the opportunity was one centralised hub to look at insights.

Structured interviews

We ran 10 semi-structured interviews with people managing chronic conditions. Mostly in their twenties, six living with PCOS, conditions running one to five years and some still undiagnosed. We also had them use the app and log a symptom while we timed it.
Overwhelming data
"Not sure what I'm looking at…
a bit much."
"Not sure what I'm looking at… a bit much."
"Not sure what I'm looking at, bit much."
Tedious logging
"Logging 52 symptoms feels
like a chore"
"Logging 52 symptoms feels like a chore"
No actionables
"Feels a bit underwhelming
to use"
"Feels a bit underwhelming to use"
58
seconds logging time
seconds logging time
52
unique symptoms to log
unique symptoms
to log
How might we turn health data into personalised, actionable insights for busy people?

Insights Hub

A hub that shows insights at a glance, daily actionables backed by data and community threads.

Original

Hi-fi

QA

Visual hierarchy
Busy, jaded users don't want to work to find what they need. I grouped content into clear sections, toned down the saturation, and added a warmer palette (avoid clinical) and stronger hierarchy for scannability.
Tab structure
I split symptoms, actionables, and resources into their own tabs. It's a space-efficient way to prevent information overload and keep next steps clear, and cycling through tabs is a natural mobile gesture.

Symptoms & data analysis

Users can view detailed analytics and visualisations of their tracked symptoms.

Original

Hi-fi

QA

Space efficiency
I replaced excessive scrolling with a swipe and added a trend summary below the visual, so users could immediately see what mattered.
Date selector
I brought the date selector back into the open, which reduced friction since users often switch between time frames to compare and export data.

Data export

Users export their tracked data to bring to hospital visits, so they can get more useful advice from doctors.

Hi-fi

QA

Export function
There was no export function originally, so we built one with a clear CTA and a linear process to address the lack of actionables.
Simplifying UI
The hi-fi version had too many options, adding cognitive load to our busy, jaded users didn't need. In the QA, I simplified it down to the essentials for a frictionless flow.

Symptom categories

Helped users find what they needed faster and brought calm warmth into a screen that previously felt chaotic. The idea was to lean on clean visuals, a show-don't-tell approach and a linear flow.

Actionables

Two new features helped users actually start and maintain habits that improve their condition:
  • Personalised tasks with auto-alerts

  • Daily streaks for app retention

Community resources

A new page let users gain insight into their condition and connect with others going through the same thing.

The pivot & output

I spent time coaching the team on best practices and giving them opportunities to own the UI work, but as the deadline closed in I took on final polish and QA across every screen. With collaboration, I aimed to keep the essence of their designs intact while ensuring consistency and good finish.

Each screen went through 3 stages: from original Toastie design, our team's hi-fi iteration, and a final polish pass for visual consistency.

The pivot & output

I spent time coaching the team on best practices and giving them opportunities to own the UI work, but as the deadline closed in I took on final polish and QA across every screen. With collaboration, I aimed to keep the essence of their designs intact while ensuring consistency and good finish.

Each screen went through 3 stages: from original Toastie design, our team's hi-fi iteration, and a final polish pass for visual consistency.

Insights hub

A hub that shows insights at a glance, daily actionables backed by data and community threads.

Original

Hi-fi

QA

Tab structure
I split symptoms, actionables, and resources into their own tabs. It's a space-efficient way to prevent information overload and keep next steps clear, and cycling through tabs is a natural mobile gesture.
Visual hierarchy
Busy, jaded users don't want to work to find what they need. I grouped content into clear sections, toned down the saturation, and added a warmer palette (avoid clinical) and stronger hierarchy for scannability.

Symptoms & data analysis

Users can view detailed analytics and visualisations of their tracked symptoms.

Original

Hi-fi

QA

Space efficiency
I replaced excessive scrolling with a swipe and added a trend summary below the visual, so users could immediately see what mattered.
Date selector
I brought the date selector back into the open, which reduced friction since users often switch between time frames to compare and export data.

Data export

Users export their tracked data to bring to hospital visits, so they can get more useful advice from doctors.
Users export their tracked data to bring to hospital visits, so they can get more
useful advice from doctors.

Hi-fi

QA

Simplifying UI
The hi-fi version had too many options, adding cognitive load to our busy, jaded users didn't need. In the QA, I simplified it down to the essentials for a frictionless flow.
Export function
There was no export function originally, so we built one with a clear CTA and a linear process to address the lack of actionables.

Community resources

A new page let users gain insight into their condition and connect with others going through the same thing.

Actionables

Two new features helped users actually start and maintain habits that improve their condition:
  • Daily streaks for app retention
  • Personalised tasks with auto-alerts

Symptom tracking categories

Helped users find what they needed faster and brought calm warmth into a screen that previously felt chaotic. The idea was to lean on clean visuals, a show-don't-tell approach and a linear flow.

Gentler Insights Hub

We never acted on the gradient issue at the time, so I went back and reworked the screen to see what it would have looked like if we had.
Notification card
This is important since it shows urgent, actionable information. I gave it priority: softer gradient and circles for warmth, with colours chosen to stay legible and still grab attention.
Pinned insights
I toned down the colour coding. It's less intrusive and keeps flare intact, and keep each stat scannable without competing with the notification card for attention.

Testing

Testing

How we tested

We timed the same logging task again on the redesign: find a symptom you actually get, period cramps for instance, and log it. Alongside that we ran moderated think-aloud sessions across four tasks: reading your stool data insights, finding and completing actionable tips, and exporting your health data as a PDF.

What testing showed

Main problem was that the Insights Hub screen had too much going on to take in at once. One participant said the gradients made her think harder rather than less.

Gentler Insights Hub

We never acted on the gradient issue at the time, so I went back and reworked the screen to see what it would have looked like if we had.
Notification card
This is important since it shows urgent, actionable information. I gave it priority: softer gradient and circles for warmth, with colours chosen to stay legible and still grab attention.
Pinned insights
I toned down the colour coding. It's less intrusive and keeps flare intact, and keep each stat scannable without competing with the notification card for attention.

Results

Results

I delivered a centralised Insights page, a redesigned symptom analysis view, and a data export that didn't exist before. People with chronic conditions get very little time with their specialist, and being able to hand over a clean summary of their tracked data changes that conversation.
Limits of the data
Both rounds were small. The logging test ran remotely with peers rather than recruited users, and the think-aloud had three participants. Enough to find the obvious problems, not enough to treat either number as precise.
52 9
symptom categories
symptom categories
58s 25s
58s 25s
faster logging time
faster logging time

"The redesign made everything cleaner and easier to navigate.
A huge improvement from where we started."
"The redesign made everything cleaner and easier to navigate. A huge improvement from where we started."
Client, Toastie

Reflection

Reflection

I took this on alongside my job at DAPPA. I wanted to upskill my management, and leading skills. It was also a field I knew nothing about which was exciting to me.

Be more hands-on at the start

This was advertised as a PM role, and I took that too literally. I thought I could stay out of the design work, but I needed to be more hands-on. Jumping into ideation and early sketches with the team would have caught more inconsistencies before they became bigger issues.

Balancing team needs, skills and growth vs. results

Everyone had different skill levels, and each wanted meaningful work to own. Trying to appease everyone spread quality too thin. When the timeline demanded higher polish, I worked through it alongside the team rather than taking over in isolation.

Test more, and earlier

Three participants isn't enough to be confident, and we tested too late to act on much of what we found. A few months later at DAPPA I ran guerrilla testing at UNSW and got far more in a day. If I ran this project today, this is what I'd reach for to validate our designs.
The best designs feel obvious. Let's make more of it.
Email copied
Get in Touch
Isaac Jiang

© 2026

The best designs feel obvious. Let's make more of it.
Email copied
Get in Touch

© 2026

The best designs feel obvious. Let's make more of it.
Email copied
Get in Touch

© 2026