seed: "A micro-journaling app that asks only 3 questions per day — one about what drain…"
The Pitch
Nimbus Log is a mobile micro-journaling app that greets you each day with exactly three questions — what drained your energy, what lit you up, and one rotating wild-card prompt drawn from a curated library of thousands — each answered in under two minutes through free-text or quick emoji-tap responses. Every entry feeds a living weather map on your home screen, where stormy grays signal depletion clusters, golden sunbursts mark high-energy stretches, and shifting gradients reveal the emotional seasons you never noticed you were living through. The free tier delivers the daily ritual and a rolling 30-day weather view, while a $5/month subscription unlocks long-range pattern analysis — surfacing insights like "Wednesdays consistently bring your lowest energy" or "creative tasks appear in every energized entry" — along with exportable reflection archives. Built without mandatory accounts, social feeds, or bloated AI coaching layers, Nimbus Log earns its place in your daily routine by staying radically small, delivering one rare thing traditional journaling almost never manages: the moment you finally see yourself.
For Whom
🧠✨💭 A burned-out UX researcher named Maya, 31, who keeps a notes-app graveyard of abandoned journal attempts, spends Sunday nights anxiously replaying the week with no framework, and desperately wants to understand why some weeks leave her hollow while others feel electric — but refuses to open a blank page again.
Mock Screens
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Overview
🌤️
Your weather this month
Partly cloudy with bright spells — 3 high-energy streaks, 2 storm fronts near week's end
30-day weather map grid (teal highs, amber lows)
Today's forecast card: 'Tuesday looks heavy ⛅'
Streak badge: 🔥 11-day logging streak
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In use
🌦️
Thursday Check-In
What drained you today? — 'Back-to-back standups with no breathing room between them'
⛈️ Drain field typed & glowing amber
☀️ Energy prompt sliding up next
🗓️ 14-day weather strip across bottom
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Result
🌤️
Your 30-Day Weather Map
Mostly cloudy Mondays, golden Friday afternoons — your patterns are emerging.
Insight chip: 'Tuesdays drain you 78% of the time'
Streak badge: 14-day log streak 🔥
Export PDF button — unlocks with Pro
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The Hero View
the one screen / scene people will remember
9:41● ● ●
🌤
Your Weather Map — Last 30 Days
October 2024 · 23 of 30 days logged · Current streak: 11 days
Nimbus Log
This week looks partly cloudy with clearing skies
You've logged 5 days this week. Energy peaks landed on Monday and Thursday — both tied to deep-focus work blocks. Tuesday and Wednesday showed heavy drain, correlating with back-to-back meetings. Today's wild card ('What surprised you?') is waiting.
Avg Energy Score
6.4 / 10
Top Drain Tag
📅 Meetings (14×)
Brightest Day
Oct 14 — Score 9.1
in this view
1
🌧 Tuesday Oct 22
Drained: 3-hour review call · Energized: lunch walk · Wild card: 'Found $12 in old jacket'
Drained: commute delay · Energized: solo work sprint, 90 min · Wild card: 'Someone remembered my name'
4
☀ Friday Oct 25 — Today
Drained: ? · Energized: ? · Wild card: waiting for your answer
✏️ Answer Today's 3 Questions
🗺 Explore Full Weather Map
📤 Export October Reflections
Core Features
Three-question daily check-in (drain/energize/wild card) completing in under 90 seconds with freetext or quick-tap emoji responses
30-day personal weather map rendered as an animated cloud-and-sky canvas where storm icons cluster on high-drain days and sunshine bursts mark high-energy periods
Smart wild card engine rotating 60+ prompts spanning creativity, relationships, body sensations, and micro-ambitions to surface unexpected self-insight
Weekly pattern digest highlighting recurring drain triggers and energy sources with day-of-week trend overlays (e.g., Tuesdays show storm clusters)
Streak-based gentle nudge system using weather metaphors for reminders—'A front is moving in, time to check your forecast'—with zero guilt-framing for missed days
Locked premium trend correlations showing long-range emotional seasonality, exportable PDF reflection reports, and a searchable entry archive filtered by weather state
Offline-first local data storage with optional encrypted cloud backup, no mandatory account creation required to start journaling
aiOpenAI GPT-4o-mini for wild-card prompt generation and semantic tagging of free-text entries, text-embedding-3-small for clustering emotional themes across entries, lightweight sentiment scoring via Hugging Face Inference API (distilbert-base-uncased-finetuned-sst-2-english) for drain/energy classificationdataPostgreSQL via Supabase for structured journal entries and user metadata, pgvector extension for semantic embedding storage of open-ended wild-card responses, Redis (Upstash) for session caching and daily prompt rotation statebackendSupabase (PostgreSQL + Auth + Edge Functions) as unified backend, Row-Level Security for private user data isolation, PostgREST auto-generated API layer, Supabase Realtime for streak and notification triggersfrontendReact Native (Expo) for cross-platform iOS/Android, React Navigation for screen flow, Victory Native for weather-map chart rendering, Reanimated 3 for smooth transition animations between journal statesplatformExpo EAS Build and Submit for app store deployment, Expo Notifications for daily 3-question reminder push, Vercel for landing page and web-based onboarding funnel, RevenueCat for freemium subscription and paywall management across iOS and Android
The Vibe Trail
01 · audience
🧠 ✨ 🎯 💭
Introspective seekers who crave self-understanding without overwhelming complexity or daily friction.
02 · domain or indu
🏥 🧘 📊 💆
Mental wellness meets data visualization—therapeutic journaling powered by thoughtful design and pattern recognition.
03 · mood/feeling
🌤️ 🌈 ☁️ 🌊
Contemplative yet hopeful, like watching clouds shift across your internal sky, revealing clarity beneath turbulence.
04 · problem being
😴 ⚡ 🔄 ❓
Decoding what fuels or depletes you daily, then surfacing hidden emotional rhythms through simple, repeatable questions.
05 · core interacti
❓ 🗺️ ✍️ 🎨
Answer three focused prompts, watch emotions transform into personal weather patterns, discover yourself through visuali…