Kustos: Gym Workout Tracker

Kustos is the gym workout tracker that guards your gains: a fast weight lifting log, routine planner and strength training app built to work offline.

Your workout history is saved to your device as you log. Automatic local snapshots create restorable versions of your data, and you can share a backup file for safekeeping before changing phones or removing the app.

FAST WORKOUT LOGGING
★ Log weight, reps and RPE in seconds with a clean numeric keypad
★ Previous-session numbers shown beside every set, so progressive overload is obvious
★ Warmup, drop and failure set types for serious programming
★ Rest timer with reliable notifications — even with the screen locked
★ Per-exercise notes that stay pinned to each movement

ROUTINES & WORKOUT PLANNER
★ Build reusable workout routines and organize them in folders
★ 450-exercise library with images, searchable by muscle group and equipment
★ Plate calculator and supersets

PROGRESS YOU CAN SEE
★ Workout history with volume, sets, reps and duration
★ Weekly activity chart and per-exercise progression graphs
★ Personal records (PR) tracking for bench press, squat, deadlift and every lift
★ Body measurements tracking
★ Accurate volume math for barbell, dumbbell and bodyweight training

BUDDY MODE — TRAIN TOGETHER, LIVE
With a Kustos account, lift with a friend in real time: share a join code, see each other's sets as they happen, and compare the session with bodyweight-relative scoring.

SWITCH WITHOUT STARTING OVER
Import compatible workout history from Strong, Hevy, Jefit, FitNotes, Lyfta, Fitbod, StrengthLog and Fleek. Kustos shows what was imported and identifies records it could not read.

WORKS OFFLINE, SYNCS WHEN SIGNED IN
Kustos is offline-first: log in airplane mode, in a concrete basement gym, anywhere. Signed-in accounts sync when connected. Guest mode lets you start training without creating an account.

FOR EVERY KIND OF LIFTER
Whether you train for bodybuilding, powerlifting, hypertrophy, general strength or fitness — 5x5, PPL, upper/lower, full body or your own program — Kustos adapts to how you train. kg and lb supported, dark and light themes.

FREE TO TRAIN.
Kustos launches fully free: unlimited routines, full workout history and CSV export. No credit card. No trial clock.

Kustos. Guard your gains.

Support: support@kustosapp.com
Privacy: https://kustosapp.com/privacy