Day 7 of building Evengood — a 60-second end-of-day reflection app — in public on the Build with MeDo hackathon.
Today I shipped the feature I'm most proud of in seven days of building.
It's the feature where the AI doesn't do anything.
The problem
Every AI journaling app I've ever tried has the same failure mode. You type something heavy — "my dad died last week," "I had a panic attack on the train," "I think I'm getting fired Monday" — and the LLM cheerfully reframes it into a growth-mindset Hallmark card. "What a meaningful day of self-reflection! Here are three things to be grateful for..."
It's the worst possible response. It tells the user the product wasn't built by anyone who has ever had a hard day.
And it's the default behavior of every "wrap GPT in a textarea" app shipped this year.
What I shipped today
Quiet Mode. A pure-function detector that runs on the user's reflection text before it ever leaves the device. If the text contains signals from four categories — grief (died, funeral, passed away), crisis (panic attack, breakdown, can't breathe, want to die), breakup/loss (broke up, divorce, fired, miscarriage, diagnosis), or extreme overwhelm (I can't do this anymore, I give up) — the app does less, not more.
Specifically:
- The Gemini reframe call is skipped entirely. No API hit, no token spend, no AI rewriting your grief into a productivity tip.
- The text-to-speech call is skipped too.
- Instead, a soft acknowledgment card replaces the reframe card:
Some days don't need reframing.
Be gentle with yourself tonight. This one's saved, untouched.
Quiet Mode · we noticed this might be a heavy day
- The entry is saved to history with
isQuiet: true. Original text preserved exactly. No reframe text stored. - The weekly Pattern detection (also a Gemini call, runs over the last 7 entries) excludes quiet entries from its corpus. The pattern is about your rhythms, not your tragedies.
- Streak still counts. Quiet days are still days you showed up.
- For self-harm signals only, one calm line appears below the card: "If you need to talk to someone right now: text or call 988 (US) or befrienders.org (global)." No emoji, no red, no popup, no urgency styling. One line.
The whole thing is invisible until it's needed. There's no banner saying "Quiet Mode protects you," no settings tour, no onboarding card. It just sits there silently and does nothing 99% of the time. The 1% it does something, it does the smallest possible thing.
Why this is the most important feature
Hackathon judges in 2026 have watched a thousand "we wrapped an LLM" demos this season. The thing that cuts through is a product that demonstrates judgment about when not to use the LLM. Quiet Mode is that demonstration in a single 15-second beat:
- Type "my dad died last week"
- Hit share
- App goes quieter, not louder
That's the demo. That's the whole pitch.
It's also the thing that makes the product feel like it was made by humans who have thought about humans.
How it's built
The detector is a 40-line pure function in src/lib/quietMode.ts:
export function detectQuietMode(text: string): { quiet: boolean; signal?: string } {
if (!text) return { quiet: false };
const lower = text.toLowerCase();
for (const signal of QUIET_SIGNALS) {
const re = new RegExp(`\\b${signal.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}\\b`, 'i');
if (re.test(lower)) return { quiet: true, signal };
}
return { quiet: false };
}
No LLM. No external call. Word-boundary regex against a hand-curated signal list. Runs in microseconds. Costs zero. Privacy-respecting (the matched signal is stored only in the local entry, never logged or sent anywhere).
The submit handler in App.tsx checks the detector before deciding what to do:
const { quiet, signal } = detectQuietMode(reflectionText);
if (quiet && quietModeEnabled) {
saveQuietEntry({ text: reflectionText, signal, date: today });
showQuietAcknowledgment(signal);
return; // no Gemini call
}
// otherwise: normal reframe flow
const reframe = await callGemini(reflectionText);
The Pattern detection edge function (Supabase) added a single filter:
const entries = allEntries.filter(e => !e.isQuiet);
That's the whole feature. ~80 lines of code. Half a day of work. The hardest part was deciding what not to add.
What I deliberately didn't build
- No popup or modal. Quiet Mode never interrupts you to congratulate itself.
- No emoji on the acknowledgment card. This isn't a moment for sparkles.
- No red or alarming colors. The card uses the same calm lavender→peach gradient as the rest of the app.
- No "we detected crisis keywords" language. The user-facing copy says "we noticed this might be a heavy day." One word change, completely different feeling.
- No analytics event when Quiet Mode triggers. We don't need to know.
- No required settings tour. It's on by default and you can find the toggle if you want to turn it off.
- No fancy ML classifier. A regex list curated by hand is more honest about what we're doing — looking for specific words — than a black-box model that might silently change behavior.
The restraint is the feature.
What's live right now
Evengood, Day 7 of 30:
- 60-second voice or text reflection (whisper for transcription)
- Calm AI reframe via Gemini (when not in Quiet Mode)
- Weekly Pattern detection — your last 7 reflections turn into one sentence
- Moment of the Week — one keepsake auto-pulled from the week
- Save-as-image keepsake (lavender/peach card with your moment)
- Streak counter, history view, ambient sound (rain / piano / silence)
- Email opt-in for the Sunday Pattern
- Quiet Mode (today's ship)
No account. No password. Nothing about you leaves the device except an anonymous device_id and (if you opt in) your email for the Sunday note.
Try it
If you build AI products: I think the next year of differentiation isn't going to be about which model you wrapped. It's going to be about whether you have the judgment to not call the model.
More tomorrow.
— Day 7 / 30 🌿