See the pattern in your pieces
An emotion journal that turns quick emotional check-ins into a visual record you can return to over time.
Mosaic is an emotion journal built for quick, low-pressure reflection. People start with one of seven emotion families, add detail only when it helps, and can save a check-in in as few as three taps. Up to four check-ins become one daily mosaic tile, creating a visual record that makes shifts over time easier to revisit.
Mood tracking can become another task to manage. In competitive app review research, I repeatedly saw frustration with long check-in flows, unclear emotion language, privacy concerns, and tools that either oversimplified a day or demanded too much effort. Mosaic was designed to hold that balance: quick enough for everyday use, expressive enough for nuance, and calm enough to support honest reflection.
To understand where existing mood trackers break down, I reviewed 150+ public App Store reviews across 5+ mood-tracking and journaling apps. I grouped repeated feedback into three themes that shaped Mosaic’s interaction model.
Friction
“multiple entry screens are redundant and nauseating”
Product risk
When a check-in feels like a form, reflection can become work before someone records anything.
Design response
Start with a broad emotion family and let people save a minimal check-in in as few as three taps. Journaling and added detail remain optional.
Emotional range
“Sometimes I’m feeling normal or good or bad, but also I can feel content or anxious, or nervous...”
Product risk
A flat emotion list creates opposite failure modes: too few choices can flatten someone’s experience, while too many can create decision fatigue.
Design response
Use seven familiar emotion families as starting points, then let people explore more specific feelings only when they want greater nuance.
Trust
“I want to track my mental health without worrying about my data being collected.”
Product risk
When people are uncertain how sensitive reflections are handled, they may hold back or avoid the product altogether.
Design response
Treat privacy as a visible product boundary: sensitive mood and journal content stays on the device by default, while product telemetry excludes personal reflection content.
Reviews also showed that logging alone was not enough. People wanted a clearer way to look back at emotional patterns without being pushed into a dense dashboard. That informed Mosaic’s weekly and monthly insight views.
The goal was not to fit every possible tracking option into one check-in. It was to make the first choice easy while ensuring that each entry could become more useful over time.
Start simple
People do not always need the same level of emotional specificity. Mosaic begins with seven emotion families, then lets someone explore more specific feelings only when they want to. The default stays quick, without treating every day as simple.
Every check-in starts with a broad choice. More specific feelings, notes, and context tags remain available without becoming required steps.
Represent change
A single label cannot always represent a full day. Mosaic allows up to four check-ins, then combines them into one daily tile. That makes emotional shifts visible without turning a day into a scattered list of separate logs.
Each new check-in adds another segment, so one tile can hold the shape of a changing day.
Reflect gently
Check-ins become more useful when they can be revisited in context. Monthly and yearly mosaic views help people step back from individual moments and notice what has been showing up over time, without turning reflection into a score.
The monthly view keeps individual days legible. The yearly view makes the longer rhythm of emotional reflection easier to see at a glance.
Mosaic uses a dark, quiet foundation so emotional reflection can feel personal rather than clinical. The interface stays restrained while color, type, and small moments of motion give each check-in its own presence.
System palette
Mosaic keeps its interface colors restrained so the colors attached to emotional entries can remain the most expressive part of the experience.
Emotion families
Color variation belongs to emotional entries, while the surrounding interface stays intentionally quiet.
Type roles
Typography separates reflection from supporting information without making the interface feel ornamental.
Editorial display type for page titles and reflective moments.
Neutral system text for notes, choices, and supporting copy.
Monospace labels for dates, metadata, and small system details.
Mosaic keeps the interface deliberately quiet. The black canvas, softened surfaces, and restrained gold accent create hierarchy without competing with the colors attached to each emotion.
The Today screen is the clearest expression of that balance. Emotion colors carry the personal signal, while the surrounding interface makes space for the moment instead of treating it like a dashboard.
Insights are designed as a paced reflection rather than one dense dashboard. Emotional summaries, recurring feelings, and timing patterns are grouped into distinct moments, so people can take in what stands out without having to decode everything at once.
Accessibility is part of the same product system, not a separate version of Mosaic. High-contrast text makes subtle text and borders easier to see. Reduced motion removes screen transitions and heavier animations. Haptic feedback can also be turned off entirely.
Those settings let the interface adapt to different needs while preserving the same core experience.
Built withReact Native · Expo · TypeScript · SQLite + Drizzle · Zustand · MMKV · Unistyles
The technical work focused on making a simple check-in useful beyond the moment it is saved. A single entry can shape the day’s mosaic and contribute to longer-term patterns, while Mosaic keeps the emotional language consistent across the app.
Shared emotion system
Each feeling belongs to an emotion family and has display details that can be reused throughout Mosaic.
Saved check-in
Each check-in remembers which feeling was selected and when it happened. Notes and context tags stay optional.
Why it matters
That small structure gives Mosaic room to support reflection at different points in time.
Instead of copying a label or color into every check-in, Mosaic looks up those display details when it needs them. That leaves room to refine wording, add translations, or adjust palettes over time without rewriting someone’s history.
Mosaic is live and still early. The next phase is focused on learning where more depth would genuinely help, while keeping the core check-in private, lightweight, and easy to return to.
Capacity
The current four-entry limit keeps a day easy to read at a glance. I'll use privacy-conscious interaction signals to understand whether people reach that limit or want to capture more moments. A higher limit is worth testing only if the daily mosaic can still make those moments easy to read.
Private insights
Explore optional AI-assisted summaries that help people notice recurring emotions, shifts over time, and meaningful timing patterns in their own history. The goal is to turn existing check-ins into clearer, more useful observations, with on-device processing where supported.
Color access
Explore alternative emotion palettes and supporting visual cues so Mosaic's patterns remain easy to distinguish across different forms of color vision. The goal is to preserve color as a meaningful part of reflection while making the system easier for more people to read.