kach: Gym & Workout Tracker

kach is a fast, private, offline-first gym workout tracker. Build your routine, train it, and track your progress — no account, no sign-up, no cloud. Your data stays on your device.

BUILD YOUR ROUTINE
• Create multi-day routines (Push/Pull/Legs, Upper/Lower, full-body, and more)
• Choose from a built-in exercise library or add your own
• Set target sets, reps, and rest per exercise
• Schedule fixed weekdays or a flexible rotation

TRAIN IT
• A focused live logger — bank each set with one tap
• Automatic rest timer between sets
• Warm-up ramp calculator and plate math
• Personal-record celebrations when you beat your best

TRACK PROGRESS
• Per-exercise history and trend charts
• Body measurements: weight, body fat, and more
• Progress photos with then-vs-now compare
• Optional Health Connect sync for weight, workouts, and heart rate

PRIVATE BY DESIGN
• Fully offline — works with no connection
• No account, no login, no sign-up
• Your training data is stored locally on your device

kach is free and ad-supported. Built for lifters who want a clean, distraction-free way to train and get stronger.