Win Diary Case Study
Wellbeing & Mood Tracking
A private diary for moods and small wins, with cards you make yourself and charts that show the link between the two.
Wellbeing
iOS and Android
Global
Client type
Independent founder
Delivered
iOS, Android, on device storage
Headline result
1K+ installs
The Challenge
Mood trackers ask how you feel. They rarely help you notice why.
The founder had used every journalling app going and found the same shape each time: a mood score, a wall of text, and no sense of what actually made a good day good. The insight they wanted to build around was that recording wins changes what you remember about a week.
Privacy was the other half of the brief. People will not write down an honest bad day if they suspect it is being uploaded, analysed or used to sell them something.
The Solution
Logging
A mood and a win, in under a minute
One tap for how the day felt, one line for something that went right. That is the whole daily ritual, which is why people keep doing it.
Win cards
Cards you design, not stickers we chose
Users build their own win cards with their own wording and colours, so the categories match their life rather than a wellness template.
Charts
The pattern behind a good week
Charts put mood next to the wins recorded around it, so the app can quietly show that the best weeks had a certain kind of day in them.
A signature detail
Choosing to keep the diary on the phone
We could have put entries in a cloud database and shipped faster. Instead the diary stays on the device, with an optional encrypted backup the user turns on themselves. It cost us a more complicated build, and it is the reason the app can say plainly on the listing that nobody else reads your diary. The reviews mention it constantly.
- 1 Entry written Mood and win captured on the device.
- 2 Stored locally Encrypted on the phone, not on a server.
- 3 Backup is opt in Off by default, key held by the user.
- 4 Charts computed on device No entry leaves the phone to be analysed.
The Result
1K+
installs on Google Play.
0
diary entries stored on our servers.
1 min
is all the daily ritual asks for.
The screens
Download Win Diary
Live on the stores now. See the work for yourself.
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