TrainBud

TrainBud puts your training and recovery numbers on your wrist and lets you ask an AI assistant about them without reaching for your phone. It opens on Today: not a grid of numbers, but what actually stands out — measured against your own baseline, not a population average. • "Resting heart rate 4 bpm above your 28-day baseline, 3 days running" • "5.6 h of sleep short of your usual 6.3 h over the last 7 nights" It says when it does not have enough history to compare anything yet, rather than pretending everything is fine. A glance shows your recovery score and last night's sleep without opening anything. Open it and swipe or tap through the cards you switched on: • Today — what stands out, in plain language • Week — this week against last, and where your training load is heading • Ask AI — questions drawn from what actually fired, plus up to five of your own that you write in the dashboard • AI Insight — a daily one-line tip built from your own numbers • Overview — recovery, sleep, stress and VO2 max in one grid • Recovery — score with a colour-coded ring, plus resting and maximum heart rate • Sleep — hours and quality score • Activity — latest workout with duration, distance, average heart rate and VO2 max • Stress — daily average Which cards appear, and in what order, is yours to set in the dashboard. Values are colour-coded against thresholds you can change. If the server is briefly unreachable, the app shows your last cached summary with an "updated X ago" marker. SETUP REQUIRED — THIS APP NEEDS YOUR OWN SERVER TrainBud is the watch front end for a free, open-source companion server that you run yourself. It does not work standalone. 1. Install and configure the server (Node.js 20+): npx trainbud setup 2. Run: trainbud serve 3. Expose it over HTTPS with a tunnel (Cloudflare Tunnel or ngrok both work) 4. In the app's settings, enter that HTTPS URL as Server URL 5. Open the dashboard link the server prints, and approve the six-digit code shown on your watch — this pairs the watch, so no API key is ever typed on the device AI features are optional and off by default. They require your own Anthropic API key, entered once in the companion dashboard, and every call is metered there with an optional monthly cap. No AI runs on the watch: your question is sent to your own server, which calls the AI provider on your behalf and returns the text. HEALTH DISCLAIMER TrainBud is for general wellness and training information only. It is not a medical device, it does not diagnose, treat or prevent any condition, and its output — including AI-generated text — is not medical advice. Consult a qualified professional before making decisions about your health or training load. TrainBud is an independent open-source project, not affiliated with, endorsed by or sponsored by any device or platform vendor. Setup guide and source: https://github.com/Zsadigzade/trainbud