Muscle Log: Workout & AI Coach
Best workout log — gym & home
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New Sleep Tracking (Premium): Apple Watch scores your sleep quality. Plus a daily Recovery tip, a muscle body map, and shareable cards
Muscle Log is a workout tracker built around one goal: helping you stay consistent.
■ Effortless logging
- Start a session in one tap from a template—your last weights and reps carry over automatically
- Log on Apple Watch alone, even offline, then auto-sync to iPhone
- See your progress by muscle group, personal records, and a training calendar
■ AI Personal Coach (Coach plan)
- Get "today's workout" tailored to your history and goals
- Chat about form, plateaus, and motivation
- Receive daily meal plans with PFC (protein/fat/carb) balance
- Just snap a photo of your meal to auto-log calories and nutrition
- Get an automatic weekly review report every Sunday
■ Privacy
- Detailed logs stay on your device. Only summaries and coach conversations go to the cloud
- Meal photos are discarded right after AI analysis
- You can delete your account and data anytime from within the app
Note: The numbers and suggestions in this app are study aids and estimates only. They are not a substitute for medical diagnosis or treatment.
The Coach plan is an auto-renewing subscription: ¥780/month or ¥7,800/year, with a 7-day free trial. Cancel anytime.
Please review the following before using the app.
Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
App Terms of Service: https://ohtakaisei.github.io/muscletraining-legal/terms.en.html
Privacy Policy: https://ohtakaisei.github.io/muscletraining-legal/privacy.en.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New Sleep Tracking (Premium): measure heart rate, HRV, and sleep stages on Apple Watch, with a nightly sleep score, sleep bank, and readiness index. Plus a daily Recovery coaching card, finer muscle targeting (e.g., upper chest) with a body map, shareable achievement cards.
The developer, KAISEI OTA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- KAISEI OTA
- Size
- 47.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Korean
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contests
Contains
User-Generated Content
Health or Wellness Topics
- In-App Purchases
Yes
- AI Coach (Yearly) $49.99
- AI Coach (Monthly) $4.99
- Copyright
- © 2026 Kaisei Ota