· TriCoach
57% Better, 45% Faster, 41% Cheaper: Rebuilding TriCoach's AI Coach
Part 2: a decision model picks what to read, code acts on it, and the language model only writes. Graded blind, answers came 57% better, 45% faster and 41% cheaper.
Notes
How the apps are built.
· TriCoach
Building an AI Coach Into TriCoach: Architecture and Guardrails
How I added a general purpose AI coach to TriCoach: deterministic math for the numbers, cited sports-science rules, one model in a goal-checked loop of plain code, and native visuals the user approves.
· iPhone Duo
A Prompt for Making iOS Apps Great on iPhone Duo
I moved my apps to iPhone Duo by hand, then turned every tweak that worked, and every shortcut that didn't, into one prompt for coding agents.