# KnowMe

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Michael Morahan](https://cerebralvalley.ai/u/msfm)
- **GitHub:** https://github.com/morahan/KnowMe
- **Demo video:** https://www.youtube.com/watch?v=0pLPUXx2LjM
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4293

KnowMe: a private, calm journal for changing a habit

It's for people changing a habit like alcohol, cannabis, gambling, or nicotine. In ten seconds you log the moment a craving shows up: how strong it was, where you were, how you felt, whether it passed, and what helped. Everything stays on your phone. KnowMe shows your own patterns in plain words ("Most of your cravings land between 7 and 10pm"). In a hard moment, "I'm in it" shows your own reasons, your top helpers, and a slow breath circle. It never tells you what to do, never shames you, and never calls anything a relapse.

The problem
Habit apps tend to punish a slip with red failure states and broken streaks, or hand out generic advice that ignores when, where, and why your cravings happen. KnowMe gives you a mirror instead: fast enough to use mid-craving, honest enough to trust, and private enough to be truthful in.

How I built it: Meta Wonder
I built KnowMe solo, and Meta Wonder was the main builder. I wrote short guiding docs for the product, design, safety rules, and code structure. Wonder built from them phase by phase: the Expo and React Native app, the on-device SQLite data layer, every screen, the Vercel proxy, and the tests.

How Llama is used
Meta Llama powers Reflect, a short weekly letter. Only when you tap Reflect, the app builds an anonymous summary on the phone: counts, average intensity, cravings by hour, top contexts, feelings, and helpers, and your own reasons. No notes leave the device unless you turn them on. The summary goes through my own proxy, which keeps the API key off the phone. Llama writes 4 to 6 calm sentences that mirror your week, then asks one open question. No advice, no medical guidance, no shaming words.

Privacy
There are no accounts, no sync, and no analytics. Reflect is the only network call. The proxy logs only token counts and errors, never content.

Safety, in layers

1. On the device, every free-text field is checked for crisis language before anything is saved or sent. A match shows a full-screen card with 988 and 911 right away. 2) The proxy re-checks the text, then Llama runs a focused safety screen before writing anything. If the screen fails, no letter is made. 3) The reply is checked again, and a flag shows the same card instead of the letter. The prompt also forbids medical, dosing, and withdrawal advice. Each letter is labeled "Written by Llama from a private summary." Get support is always one tap away. The crisis eval is about 70 phrases I wrote myself, not a clinical validation. Expanding it comes first after the hackathon.

What's next: GuideMe
An in-the-moment coach inside "I'm in it" that notices what has helped you before ("Last time at this hour, a walk helped") and asks, never orders. It will follow the same rules as Reflect: summaries only, the crisis card first, and a clear "this is Llama, not a person" label.

Know thyself. The data is yours. The conclusions are yours.

## More from Meta Global AI Developer Hackathon

- [nsambleTeam](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4290)
- [Advision](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4291)
- [Wildseek](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4292)
- [LawnLens](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4294)
- [toba_apex](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4295)
- [Cruyff](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4296)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4293. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt