Track workouts and body composition. AI analyzes your gym log and plans your next session.

AIFitLog is a free workout journal and weight log that uses AI to analyze your training and body stats. Record your lifts and body fat — AI handles the rest.

■ Body Composition Tracking
Log weight and body fat to automatically calculate lean body mass, BMI, and FFMI (Fat-Free Mass Index). Visualize your progress with clear graphs — perfect for monitoring cutting and bulking phases.

■ Health Connect Sync
Import body weight and body fat from Health Connect with one tap. Measure on a Health Connect–compatible smart scale (Tanita, Withings, and more) and pull the data straight into AIFitLog — no manual entry. Your body composition feeds directly into your graphs and AI analysis.

■ Workout Log
Track exercises by muscle group, weight, reps, and RIR (Reps in Reserve). Add notes to each set to record form cues or how you felt. Monitor total volume and max strength trends — the data you need for progressive overload and long-term muscle growth.

■ AI Analysis & Workout Planner (Premium)
AI analyzes your accumulated workout log and body composition data.
・Daily Insights
Assesses your current state based on the last 30 days of training and body stats.
・Weekly Report
Scores your week across 3 dimensions: training performance, body fat and weight trends, and recovery. Highlights what to improve with a detailed breakdown.
・AI Workout Planner
Builds your personalized weekly workout schedule day by day, based on your goals, your log, and real-world recovery. Like having an AI personal trainer.

■ Gym Tools
・Warm-up Calculator: Enter your working weight for an optimized warm-up routine
・Plate Calculator: Select target barbell weight to see the exact plate setup
・1RM Calculator: Estimate max strength from any weight and rep count. Includes rep conversion table for target weights
・Rest Timer: Track rest between sets. Keeps running even when you leave the screen
・Reminders: Set notifications by day and time. Option to notify only on rest days

■ Why AIFitLog?
Most fitness apps are just logbooks. AIFitLog goes further — it reads your training log and body composition trends, then gives you a concrete plan. No generic templates. Every suggestion is based on your actual data. Whether your goal is bodybuilding, hypertrophy, or fat loss, your AI trainer adapts week by week.

■ How it works
1. Log your exercises — weight, reps, sets, and notes
2. Track your body weight and body fat after each weigh-in, or sync from Health Connect
3. AI reads your data and scores your progress
4. Get a personalized workout plan for the week ahead

Use it as a simple gym app and exercise log for free. Upgrade to Premium to unlock AI-powered analysis and planning.

■ Used for
・Muscle building and bulking — track weight gain and training volume
・Weight loss and cutting — monitor body fat and lean mass
・Strength training log with progressive overload tracking
・AI personal trainer and workout planner
・Weightlifting and resistance training journal
・Health Connect sync — auto-import body weight and body fat
・Building consistent gym habits

Log it. Let AI handle the rest.