Powerups are installable upgrade packs for Muse: new skills, new personalities, and automations that run while you sleep. Buying one takes a minute. Installing one takes a sentence.
A Powerup isn't a clever paragraph you paste into a chat. It's a bundle that gets built into your assistant: a skill, behavior tuning, memory, goals, and scheduled automations.
Browse the lineup. Each pack is a complete upgrade: skill, coaching personality, and automations that check in on their own.
One-time purchase, secure checkout via Stripe. Your license key appears the second payment clears.
Tell your Muse install the marathon coach powerup, enter your key, answer a few questions. Done in about five minutes.
Packs #001–#002 are live. More are in the lab.
A marathon coach that lives inside your AI. Phase-based training for first-time marathoners, guardrails that keep you honest, three coaching personalities, and a real check-in every Sunday.
A strength coach that assesses you first. Eight questions route you into one of three proven training tracks — 5×5 linear, 3×5 + power, or wave progression — with a training log, form checks, and graduation when you earn it.
In the lab. Meal Prep Pro — a weekly prep system from a decade in pro kitchens.
Coming soonIn the lab. Macro Chef — hit your macros with real food, no misery.
Coming soonIn the lab. Macro Tracker — snap your meals, get the numbers, keep the streak.
Coming soonThe short version of everything.
A bundle that upgrades your Muse assistant: a new skill, behavior and personality tuning, saved memory and goals, and scheduled automations (like a weekly check-in). It installs into your assistant and stays there.
After checkout you get a license key instantly. Open your Muse assistant and say "install the marathon coach powerup", enter your key when asked, and answer a few setup questions. About five minutes, start to finish.
A Muse account (Meta's AI assistant) — the free app works. Your pack lives in your assistant, on your account.
No. Every pack is a one-time purchase. Pay once, it's yours forever, including the automations.
Email stonejarhq@gmail.com. If your pack doesn't install or work as described within 14 days of purchase, you get a full refund — no forms, no hassle.
Marathon Coach is live now. More packs are in the lab.
Get Marathon Coach