- Stage
- v0.9 live, November 2026
- Platform
- Installable PWA, offline first
- Role
- Research, design and build
- Pen pals
- 36 fictional characters, written by AI. Never real strangers
The problem
Mood journals ask a lot and give little back, so most people stop within a week. Streaks make every missed day feel like failure.
Hypothesis
If a quick check-in earns something to look forward to, like a letter that might arrive, people will keep showing up without streak pressure.
How it works
Calm by design: no streaks, no guilt, no red counts- 01Check inA few taps: mood, energy and one feeling. Notes are optional. Each check-in earns 5 Chronons.
- 02Drift a letterIn the Post Office, spend Chronons to send a letter to the past or the future, on stationery you choose.
- 03Wait and wonderReplies land at mail time, days later, or never. Random letters arrive too, about once a week.
Patterns, not diagnosesMood over time and your week at a glance. Never a score.
Pen pals across time36 fictional characters from the past and the future, each with their own voice and closeness.
Stationery and keepsakesPaper, ink, pens and wax seals shape who might reply. Letters can carry mementos for your Keepsake Box.
Letters to future youWrite one now and seal it. Read it when it arrives. It stays on your phone.
The AI module
Claude writes every pen pal letter in the background, in each character’s voice. It only sees the letters you write to them: never your journal, never your letters to future you. Pen pals never diagnose or act as a therapist. If the AI is slow, a hand-written letter goes out instead, so the post never stops.
Screens
Real screens with sample data. Dark mode shows each app’s dark theme.
Progress
- ✓Bible, pen pal roster and mockups for every screen
- ✓v0.1 to v0.9 in 8 phases, November 2026
- ✓Post Office: the mail engine, shop, stationery and Keepsake Box
- ✓AI module live: Claude writes the letters
- ✓Shared Innova Space passkey with Nudge! and Noggin?
- Playtest letter timing and Chronon prices
- Interviews about journaling habits
Open questions
- How often should letters arrive to keep anticipation fun?
- Are Chronon prices balanced against daily check-ins?
- How can patterns stay gentle and never feel like a diagnosis?