Show HN: Made a thing to use AI with intervals.icu (intervals.pro)

A new tool built on Intervals.icu — called Intervals Pro — brings an AI “interactive coach” directly into athletes’ training accounts: you can ask it to analyze years of training data, generate and adjust multi-sport plans (running, cycling, swimming, strength, mixed), create device-ready workouts (e.g., “hard Z3 intervals run this afternoon”) and sync them back to Garmin and other platforms. The system ingests planned events, notes, wellness metrics, lifestyle logs and historical training to customize guidance, run daily wellness checks that alter plans, and give coaches high-level dashboards of athlete status (who’s improving, who needs attention, upcoming races). Technically it’s notable for tying model-driven generation into a complete training stack: it pulls structured performance and recovery signals from Intervals.icu and writes autotuned workouts back into users’ device sync flows. Users can pick response-speed vs. depth (Gemini 2.5 Flash for fast replies or GPT-5.1 for deeper analysis), which highlights latency/compute tradeoffs in practical sports coaching. The builder emphasizes affordability and gratitude to Intervals.icu’s open platform (credit to David Tinker), positioning Intervals Pro as a tightly integrated, cost-effective alternative to siloed AI training apps — with implications for coach workflows, data-driven periodization, and on-device workout automation.