MuscleForge brings your strength training plans, set log, workout videos and progress into one place. Plan your sessions, record your effort and look back on what you have done.
LOG EVERY SET
Create exercises and training plans, schedule workout days, and record weight, reps, sets and notes. See what you have completed and what comes next, then review your session when you finish.
YOUR WORKOUT, ON YOUR WRIST
Use the companion Apple Watch app to view exercises, enter reps and weight, control rest, and remotely operate iPhone photo and video capture. View workout heart rate with supported devices and permission. Apple Watch works with your iPhone.
MOTION ANALYSIS AND SKELETON REPLAY
Capture visible joint data under supported recording conditions and replay your video with a skeleton overlay. With your own AI service configured, get experimental technique feedback from available motion measurements and revisit linked segments. Results depend on camera angle, visibility, lighting and data quality; analysis may not cover every exercise or identify every issue.
OPTIONAL AI PLANS AND WORKOUT REVIEWS
Use a conversation to help build a training plan, or turn your logged session into a summary and suggestions. AI requires your own compatible service endpoint, model and API key. Provider fees may apply. Planning, set logging, rest timing and recording work without AI configuration.
VIDEOS, PHOTOS AND GOLDEN MOMENTS
Save workout videos and session photos, mark moments during playback, and attach reference images or videos to exercises.
FOLLOW YOUR REST AND PROGRESS
Keep your session moving with rest countdowns, voice cues and haptic feedback. Explore your workout history and charts for sessions, sets, training volume and trends. Today widgets, Live Activities and system shortcuts provide convenient access to your training.
YOUR DEVICES AND YOUR DATA
Use MuscleForge on iPhone, iPhone Duo and iPad with layouts adapted to different screens. Keep training data locally and sync through your personal iCloud. Export plans or a full backup containing workout records, videos and photos. Save workouts to Apple Health with permission.
PRIVACY AND CHOICE
AI requests are sent to the provider you configure only after setup and consent. Requests may include required conversations, training summaries or derived motion measurements, not workout videos or photos. Body information and heart rate require separate choices. Automatic AI reviews and heart rate sharing are off by default. Health heart rate data and full AI reviews containing heart rate are excluded from the app's iCloud sync. Apple Health manages its own data synchronization.
Available in Simplified Chinese, English, French, Spanish and Russian.
Requires iOS 17 or later. The companion Watch app requires watchOS 9 or later. Features depend on device, OS version and permissions. AI and technique feedback are for training reference and do not replace professional guidance or medical advice.
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