October 12, 2026Practice
Free lesson hints and invite rewards
Ask Rena in lessons is free again, with a daily limit on free accounts and no daily limit on Pro.
What changed
- Ask Rena in lessons is free again, with a daily limit on free accounts and no daily limit on Pro.
- Interview Practice joins the top bar menu.
- Sign-up asks what brings you to AlgoArena and sends each answer to its own setup. When a friend signs up with your invite, you both get a week of Pro.