# Hercules

> Hercules is a free AI-powered gym tracker app for Android that combines real-time workout logging, progressive overload tracking, AI coaching, advanced muscle-group analytics, and a proprietary Balance Score — built for intermediate to advanced lifters who want data-driven training.

## About
- Type: SoftwareApplication
- Category: Health & Fitness
- Platform: Android (Google Play)
- iOS: Planned for future release
- Developer: Persimmon Labs
- Contact: support@hercules-gym.com
- Website: https://hercules-gym.com
- Download: https://play.google.com/store/apps/details?id=com.ocreynolds.hercules
- Canonical URL: https://hercules-gym.com/llms.txt
- Last Updated: 2026-06-16

## Videos
- [Hercules App Demo](https://youtu.be/_Y-UIYMOdV4): Walkthrough of core features — workout logging, progressive overload tracking, AI coaching, and analytics
- [Smart Set Suggestions & Balance Score](https://youtu.be/iUCf5S8cyLE): Deep dive into AI-powered Smart Set Suggestions, the Balance Score, and advanced training analytics

## Key Pages
- [Homepage](https://hercules-gym.com): Main landing page with features, pricing, screenshots, and FAQ
- [Blog](https://hercules-gym.com/blog): Training tips, app comparisons, and fitness guides
- [About Persimmon Apps](https://hercules-gym.com/about): The team behind Hercules — engineers and fitness enthusiasts building data-driven training tools
- [Privacy Policy](https://hercules-gym.com/privacy): Data handling and privacy practices
- [Terms of Service](https://hercules-gym.com/terms): Terms and conditions

## Blog Posts
- [Best Gym Tracker Apps for Android in 2026](https://hercules-gym.com/blog/best-gym-tracker-apps-android-2026): Comparison of the top gym tracking apps on Android including Hercules, Hevy, Strong, MyFitnessPal, and Jefit
- [Hercules vs Hevy vs Strong](https://hercules-gym.com/blog/hercules-vs-hevy-vs-strong): Head-to-head comparison of three popular gym tracker apps on features, AI coaching, analytics, and pricing
- [How to Track Progressive Overload](https://hercules-gym.com/blog/how-to-track-progressive-overload): Guide to progressive overload tracking methods and why it matters for building strength
- [Push Pull Legs Beginner's Guide](https://hercules-gym.com/blog/push-pull-legs-beginners-guide): Complete guide to the PPL training split, sample schedules, and common mistakes
- [5 Gym Tracking Mistakes](https://hercules-gym.com/blog/gym-tracking-mistakes): The most common workout tracking mistakes and how to fix them
- [How to Start Going to the Gym](https://hercules-gym.com/blog/how-to-start-going-to-the-gym): A no-nonsense beginner guide to starting gym training — compound movements, simple structure, and building the habit
- [What Is Progressive Overload](https://hercules-gym.com/blog/what-is-progressive-overload): Deep explanation of the progressive overload principle, four methods of overloading, and why tracking matters
- [Best Workout Split for Muscle Growth](https://hercules-gym.com/blog/best-workout-split-for-muscle-growth): How to choose the right workout split — full body, upper/lower, PPL, and bro split compared
- [Do You Need a Personal Trainer or Can an App Replace One?](https://hercules-gym.com/blog/do-you-need-a-personal-trainer): Honest comparison of personal trainers vs gym apps with AI coaching
- [How to Build a Workout Routine From Scratch](https://hercules-gym.com/blog/how-to-build-a-workout-routine): Step-by-step guide to building a workout program for any experience level and schedule

## Key Features
- **Hercules AI Coach**: A conversational AI assistant that reads the user's actual training history to give personalized workout recommendations, create programs, build schedules, and answer training questions
- **Smart Set Suggestions**: Regression-based algorithm that analyzes 8 weeks of per-exercise history to predict optimal weight and reps for the next session, with real-time mid-session adjustments
- **Balance Score**: A proprietary composite metric (0–100) measuring training balance across five dimensions: push/pull ratio, upper/lower body ratio, compound vs isolation ratio, muscle group coverage, and movement pattern diversity
- **Volume Distribution Analytics**: Interactive fractal bubble chart showing training volume distribution across all muscle groups with drill-down into upper body, lower body, and core
- **Progressive Overload Tracking**: Automatic comparison to previous sessions with pre-filled sets and visual volume trend charts
- **Training Insights**: Automated alerts for training imbalances, neglected muscle groups, and skewed movement patterns, with split-aware suppression of false positives
- **GPS Outdoor Tracking**: Live map with real-time route display, distance, pace, and duration tracking with background GPS support
- **Schedule Builder**: Weekly schedules, rotating schedules, and plan-driven auto-rotation through program workouts
- **200+ Exercise Library**: Built-in exercises with custom exercise creation (weight, bodyweight, cardio, duration, assisted types)
- **Personal Records**: Automatic PR tracking for max weight, best set, and best session per exercise
- **Workout Plan Library**: Pre-built programs (PPL Beginner/Intermediate/Advanced, Upper/Lower, Dumbbell Full Body) with automatic schedule configuration
- **9 Accent Color Themes**: Orange, blue, red, pink, green, neon green, yellow, purple, dark red with light/dark/system mode support

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