Finish Line Two Mode System Sprint Mode: Stopwatch for quick tasks, tracks speed improvement Endurance Mode: Deep work with distance goals based on difficulty of task done (distance) Key Features Visual trail adjusts to task difficulty Mile markers every 25-30 minutes Hydration breaks (2-minute reminders) Progress based on ETA sourced from user ratings of task difficulty Milestone checkpoints without exact finish times Tutorial System Onboarding Flow Sprint Tutorial: User times a simple 5-minute task, shows speed tracking Trail Demo: Interactive example showing how difficulty affects distance Hydration Practice: Demonstrates break timing during a 30-minute session Progressive Learning Day 1: Basic sprint/endurance selection Day 2: Introduce difficulty scaling and mile markers Day 3: Milestone planning and progress estimation In-App Guidance App ordering of tasks Progress celebration tutorials at major milestones