IN THE FIELD GUIDE
simplemuscle
simplemuscle.ai
Simple Muscle is an iPhone app that tracks workouts and connects with AI assistants like ChatGPT or Claude to integrate training plans, logged sets, and history. It provides a focused gym experience with structured workout tracking, rest timers, and lock-screen controls, enabling AI to analyze and update plans based on user progress.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Sep 12, 2026
A good fit for
- iPhone users who want to integrate AI assistants like ChatGPT or Claude with their workout tracking
- Users seeking a focused gym experience with minimal phone interaction and AI-driven workout plan adjustments
Know the limitations
- Cloud backup and device sync require a paid subscription; core tracking and AI connection are free but without sync
What you can do
- Creating and updating personalized workout plans via AI assistants based on user goals and training history
- Tracking detailed workout sessions including sets, reps, weights, and rest times for gym users
Features
- Structured workout tracking with sets, reps, weight, and time including rest timer and lock-screen controls
- Workout history and progression data available for AI analysis and plan updates
Integrations
- Connects with AI assistants ChatGPT and Claude via MCP-compatible URLs for plan creation and updates
Platforms & data export
- Workout data is structured and accessible for AI analysis and plan updates, enabling export of detailed session and progression data
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Known monthly subtotal
$0.00/month
1 of 1 tools could not be priced with these inputs, so this is not the full cost.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
| No pricing recorded yet. Check the official site, or ask the owner to add it. | |||
A practical workflow
- Create or update workout plans via AI assistants which move directly into Simple Muscle without manual setup
- Track workouts one set at a time with easy adjustments and navigation between sets
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
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