Spider Inc.

Innovative software that inspires performance.

Hercules: Strength Log.

Lift Smarter. Track Better.

The modern, data-driven fitness tracker built to log your workouts, visualize progress, and help you smash your personal bests.

Download on the App Store

Available on iOS


Core Features Designed for Progress

📈 Intuitive Workout Logging

Quickly log sets, reps, and weights with minimal taps. Focus on lifting, not fumbling with your phone.

📊 Advanced Progress Charts

Visualize your Strength Score, 1RM estimates, and volume trends over time to identify plateaus and gains.

🧠 Exercise Library

Access a comprehensive database of exercises with detailed instructions and videos (optional) to ensure perfect form.

⏱️ Rest Timer

Automatic rest timers between sets ensure consistency, keeping your workouts efficient and intense.