Day One

One brutal puzzle a day. Sharpen your brain in minutes.

The iOS companion for independent tutors — students, scheduling, lesson packages and payments in one place, with AI-drafted parent feedback.

Spoiler-free hints for all seven daily prompts — just enough light to find your own answer.

Master your AI personal assistant in just 7 days. Compatible with Telegram, WeChat, Feishu and Discord, supports multiple languages, and comes with 5,490+ community skills.

Advanced AI education agent that builds a one-stop AI learning closed loop featuring "video lectures, in-class practice, and intelligent review"

Parental assistant app to manage kids' phones, with remote control, location tracking and anti-addiction features to keep your children safe.