What's New in This Version: We're excited to introduce several powerful new features and improvements to help you perfect your plank training: 1. 21-Day Challenge Mode Break big goals into manageable 21-day milestones with a structured mix of challenge and rest days. Progression adapts to your fitness level so you can track day by day and stay motivated. 2. Quick Mode When pose feedback isn’t needed, use Quick Mode for a simple timer—ideal once you’re comfortable with form. Sessions stay fast and convenient, and all training data is still tracked. 3. Free Training Mode Train on your own schedule outside the challenge program. Record plank sessions flexibly and track workouts your way, with or without the 21-day flow. 4. Personal Best Challenge Push your limits with PB-focused training: real-time feedback, celebrations when you set new records, and clearer tracking of improvement over time. 5. Voice Guidance & Coach Styles Optional real-time voice coaching with multiple coach styles and volume control, so every session feels guided and easier to stick with. 6. Daily Challenge Reminders Turn on optional notifications to build a stronger plank habit and miss fewer training days. 7. PlankIt Pro (optional) Unlock advanced habit tools with a one-time purchase: streak protection, milestone badges, check-in vouchers for missed days, visual check-in calendar, and weekly & monthly training insights.