BlogAug 11, 20268 min read
Why We Cut the 30-Day Challenge Feature
We built a 30-day habit challenge for ViviDiary, tested it, and immediately killed it. Here is the raw data on why streak-based UX destroys long-term retention.
Ethan ColeReadTopic
A/B Testing
5 articles
BlogEthan ColeRead
BlogJul 30, 20265 min read
Why We Built a Guilt-Free Tracking UX for Summer 2026
Most habit apps punish you for living your life. Here is the data behind why ViviDiary shifted to a guilt-free tracking UX this summer, and the features we killed along the way.
Ethan ColeRead
BlogJul 25, 20267 min read
Liquid Glass Mood Tracker UI: Why We Rejected Apple's 2026 Trend
We built a Liquid Glass mood tracker UI to match Apple's 2026 design language. Here is why our A/B tests forced us to kill it for our core logging experience.
Ethan ColeRead
BlogJul 24, 20266 min read
Why We Rejected the ADHD Second Brain Planner UX
Many ADHD users ask for a 'second brain' planner. Here is why our UX testing led us to kill that feature and build low-demand emoji logging instead.
Ethan ColeRead
BlogApr 27, 20267 min read
Mobile Widget Design: Why We Killed Our Mini-Journal
We assumed users wanted a mini-journal on their home screen. Here is why we killed our complex widget, prioritized a two-second interaction, and boosted daily retention.
Ethan ColeRead