# Simple Muscle — AI-native workout tracker

> AI-native workout tracker for logging sets, managing rest, and analyzing training data. (iPhone/iPad app by Vladimir Haltakov.)

- Source: https://appshunter.io/ios/app/simple-muscle/id6787905614 (this page in markdown: same URL + `.md`)
- Developer: [Vladimir Haltakov](https://appshunter.io/developer/1895571295)
- Category: Health & Fitness, Productivity
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 17.0 · 124 MB
- Languages: American English
- Released: 2026-08-09
- Data updated: 2026-10-04
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/simple-muscle/id6787905614/reviews.md

## What is Simple Muscle?

Simple Muscle is an AI-native workout tracker built for the moments between sets—now on iPhone and Apple Watch—and for the AI chat you already use.

Plan a workout once, then log each set quickly with clear controls for reps, weight, or time. Move between exercises, add extra sets, and manage recovery with a rest timer that follows your workout to the Lock Screen and Dynamic Island.

Take your saved workouts to Apple Watch and train without carrying your phone. Follow your workout exercise by exercise, adjust weight, reps or duration, complete sets, and manage rest periods directly from your wrist.

The core tracker is free and works offline. Create workouts, explore a library of more than 400 exercises, review session history, check weekly volume, view progress charts, adjust kg/lb and rest settings, and complete workouts without an account.

Optionally save completed workouts to Apple Health so they appear in your activity history.

If you sign in, optional sync can back up and restore your training data across devices. With the optional AI Connection subscription, Simple Muscle can connect to ChatGPT, Claude, or other MCP-compatible assistants so an assistant you authorize can plan, edit, and analyze workouts using your training history.

Features:
- Apple Watch workout tracking
- Workout templates and custom workout creation
- Active workout mode with exercise and set progress
- Reps, weight, and duration tracking
- Rest timer with pause and end-rest controls
- Library of more than 400 exercises
- Exercise filters, instructions, videos, and common mistakes
- History, weekly summaries, session details, and progress charts
- Kg/lb and week-start preferences
- Lock Screen Live Activities and rest notifications
- Optional Apple Health workout saving
- Optional account sync and AI Connection

Simple Muscle is intended for personal fitness tracking and does not provide medical advice. Exercise involves risk. Choose appropriate movements and loads, stop if something feels unsafe, and consult a qualified professional before starting or changing a program when needed.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- AI-native workout tracking
- Apple Watch integration
- Rest timer with Lock Screen notifications
- Library of 400+ exercises
- Progress charts and session history
- Optional AI Connection subscription

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Simple Muscle Monthly Plan | $4.99 | per month |
| Simple Muscle Yearly Plan | $49.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/simple-muscle/id6787905614/reviews.md

### 1/5 — Misleading as hell.

*2026-08-11*

Doesn’t work on ChatGPT and you need developer mode which is not included in plus.

## Frequently asked questions about Simple Muscle

### What is Simple Muscle?

Simple Muscle is an AI-native workout tracker designed to help you log your gym sets efficiently. It offers features like rep, weight, and time tracking, a rest timer, and an extensive exercise library.

### Can I use Simple Muscle on my Apple Watch?

Yes, Simple Muscle fully supports Apple Watch, allowing you to track your workouts exercise by exercise directly from your wrist without needing your iPhone.

### Is Simple Muscle free to use?

The core workout tracker functionality of Simple Muscle is free and works offline. This includes creating workouts, accessing the exercise library, and reviewing your session history.

### What are the subscription options for Simple Muscle?

Simple Muscle offers an optional AI Connection subscription that allows integration with AI assistants like ChatGPT for workout planning and analysis. Subscription plans include a monthly option for $4.99 and a yearly option for $49.99.

### Does Simple Muscle have ads?

No, Simple Muscle does not contain advertisements. The app is free for its core features, with optional paid subscriptions for advanced AI integration.

### How often is Simple Muscle updated?

Simple Muscle was last updated on August 23, 2026, with version 1.1.0. This indicates a recent update, suggesting ongoing development and support.

### Can I sync my workout data with Apple Health?

Yes, Simple Muscle offers an optional feature to save completed workouts to Apple Health, integrating your training data into your overall activity history.

### What is the age rating for Simple Muscle?

Simple Muscle has an age rating of 12+, making it suitable for teenagers and adults interested in fitness tracking.

## Version history (last 5 releases)

### 1.1.3 — 2026-09-24

Connect Simple Muscle to ChatGPT directly from Settings. You can also reorder or remove exercises during a workout without changing your saved routine.

### 1.1.2 — 2026-09-21

You can now adjust a workout while you’re training:
- Reorder exercises during an active workout.
- Remove exercises from the current session without changing your saved routine.
- Added safeguards when removing exercises with completed sets.

### 1.1.1 — 2026-09-05

- Easier ChatGPT and Claude setup with direct connection guides.
- More reliable workout syncing and cloud restores.
- Fixes for sign-in, sign-out, and account switching.

### 1.1.0 — 2026-08-23

Simple Muscle is now on Apple Watch! Start saved workouts, track sets, adjust weight, reps or duration, and manage rest periods from your wrist. This update also expands the library to 400+ exercises and adds optional Apple Health workout syncing.

### 1.0.0 — 2026-08-09

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-04.*