RPI-Rep Performance Index

A native iOS workout tracking app built for lifters who follow structured double progression programs. RPI tracks your sets, reps, and weight across training cycles and automatically tells you when to increase weight based on double progression logic — hit your rep target across all sets, and the app flags it's time to go heavier. Features: -Double Progression Engine — Automatically detects when you've hit your rep ceiling and suggests weight increases -Custom Training Cycles — Build multi-week training blocks with your own workout splits and exercises -Compact Number Pad — Purpose-built for the gym. Log weight and reps fast between sets without fumbling with a standard keyboard -Active Workout View — Auto-saves your session so a crashed app or accidental close won't lose your work -Progression Charts — Track weight and volume trends over time -Body Weight Tracking — Log and chart your body weight alongside training data -Warmup Calculator — Configurable warmup sets based on your working weight -Data Export — Export workout history and body weight logs as CSV -lbs / kg Support — Switch units globally from settings -Dark Mode — Full dark mode support No external dependencies. No backend. All data stays on your device.