Gym Diary - Workout & Diet Log

Most fitness apps just wait for you to open them. GymDiary is different — its AI trainer reaches out to you first. The moment your logging slips, it checks in.

Workout tracking, meal and calorie logging, weight management, and a genuinely autonomous AI coach — all in one app.

Plenty of apps can generate a workout plan with AI. GymDiary's AI is fundamentally different: it doesn't hand you a plan and disappear. It watches your data, thinks for itself, and acts — a real, fully autonomous AI personal trainer.

■ Fully Autonomous AI Trainer (our signature feature)
• Notices when your activity drops and messages you first
• Warm when you need encouragement, firm when you're slipping — like a real coach
• You never have to make the first move
• 24/7 answers to your training and nutrition questions

■ Workout Tracking
• Log exercises, sets, weight, and reps in seconds
• Save go-to routines as My Sets for one-tap logging
• AI-built workouts sync straight to your schedule

■ Meal & Calorie Management
• Log breakfast, lunch, dinner, and snacks in a tap
• Snap a photo and let AI estimate calories and nutrients (Premium)
• Scan a barcode to add packaged foods instantly
• Track your protein/fat/carb (PFC) balance with clear charts

■ Weight & Body Tracking
• Record daily weight and body-fat percentage
• Spot trends at a glance with graphs
• Track progress toward your goal weight

■ Schedule & Consistency
• Plan training by day of the week
• AI-planned workouts auto-sync to your calendar
• Reminders that keep your streak alive

■ In-Depth Stats & Analysis
• Strength progression charts per exercise
• Calorie-intake trends
• Training volume by muscle group
• Weekly AI report to review your progress (Premium)

■ 8 Languages
English, Japanese, Korean, Traditional Chinese, Spanish, Brazilian Portuguese, German, and French.

■ Pricing
• Core tracking is free, forever
• Premium: $9.99/month or $49.99/year (save 56%)
• Includes a 14-day free trial

A human personal trainer costs $50–100+ per session. GymDiary gives you an AI trainer that never clocks out — for $9.99 a month.

■ Legal
Terms of Use (EULA): https://gymdiary.tokyo/ja/terms
Privacy Policy: https://gymdiary.tokyo/ja/privacy