Lift heavier.
Log nothing.
Kilo knows.
A native iOS strength app with an AI coach that builds your routines, an Apple Watch companion that tracks every set, and stats that finally make sense.
The thesis
Three principles. Zero compromises.
Native to the bone
SwiftUI, SwiftData, Liquid Glass. iOS 26+ only — every detail tuned to the device, nothing held back for cross-platform parity.
AI as a teammate
A coach in chat, in your routines, in any URL you share. Not a chatbot bolted on — intelligence is part of the workflow, not a window.
Equipment-aware
Configure what you have. Every routine, every suggestion, every weight increment adapts to the gear in your gym.
AI Coach
A coach that types
when you talk back.
Ask for a four-day push-pull split. Paste a YouTube video. Drop a routine PDF. Kilo's coach reads it, builds it, and drops it into your library — with full tool transparency so you always see what it touched.
Apple Watch
Your wrist becomes
the remote.
The watchOS app keeps your hands free during sets. Heart rate, set timer, next exercise — all in Liquid Glass on your wrist, all written back to the iPhone the second you finish.
Stats
Progress you can
finally read.
Charts, comparisons, and exercise-by-exercise breakdowns built into the app — not stitched together from a CSV export.
Top set on Bench
+12.5kg
This month vs last
Bench Press
Sessions logged
March
Set completion
of planned
Day one
Everything you get
on day one.
Routines · Playbook
Routines you'd repeat. Principles you'd defend.
Every routine you build, plus a Playbook for the strategy behind them. The coach reads both before suggesting anything.
YouTube · URLs
Share any video. Get a routine.
Hit the share sheet on a YouTube video, an article, or a podcast page. The coach reads it and builds a routine.
Routine
Push Day · 6 exercises
Exercises
Catalogue, not a list.
Grouped by movement, searchable, AI-discoverable.
Equipment
Profiles per gym.
Home, commercial, hotel — Kilo adapts.
History
A training record.
Not a disposable timer log.
HealthKit
Reads activity.
Writes workouts.
Native two-way sync with Apple Health. Steps in, sessions out.
iCloud
Your data,
your phones.
End-to-end sync across iPhone, iPad, and Watch.
MCP · OAuth 2.1
Let ChatGPT build
your next workout.
Or Claude. Or both.
Kilo is an MCP server. Connect it inside ChatGPT or Claude in two taps and let either assistant create exercises, search your catalogue, and build routines straight into your library. OAuth handles the rest.
See how it connectsWhy Kilo
Not another fitness app. An opinion.
iOS-only on purpose.
No web app, no Android, no compromises. Every screen and every gesture is built for the device that holds it.
AI you can audit.
Every tool call from the coach is named, shown, and reversible. No magic dust, no opaque suggestions, no surprises.
Built by someone who lifts.
Not a feature factory. Every screen exists because it was missing from the apps the maker actually used.
Waitlist
Ship date:
when it's ready.
Get on the list and be first when Kilo lands on the App Store. No marketing emails. One launch ping.