🔥 Streak — one lesson a day banks it. That's the whole game; extra lessons bank tasks, not days.

❄️ Freezes — earned at day 3 and day 14. A freeze covers a missed day automatically, so life doesn't burn your streak.

⚡ Sparks — every 7-day streak earns one: a pass that opens any Pro lesson, yours forever. Bank up to 2.

🏔 Tiers — Crawl → Walk (day 7) → Run (day 30). Tiers open capability and status — never the next lesson.

📈 Levels — high scores raise your level; higher levels hide the examples and raise the pass bar. The training wheels come off as you get good.

🎯 Free plan — 2 lessons a day. The streak only ever needs 1.