Products

Three situations, one method

We don't ship feature checklists. Each product serves one specific situation, but all of them go through the same strict editing.

Launching soon · filing in progress

ZiZBJJ

Turning jiu-jitsu technique into a connected network

Most jiu-jitsu resources break technique into isolated tutorials: learn an escape today, a submission tomorrow, forget both by next week, and in live rolling you can't recall which applies when. ZiZBJJ starts from a different premise — technique was never isolated to begin with. It's a network, connected by simple if-this-then-that logic: if your opponent does X, then you do Y. Log it as a card, connect it into a network, drill it until you can call it up live — that's the three-step method.

  • 17 positions covered, 139 technique cards, 8 underlying principles
  • A three-stage mastery system that tracks whether you can actually use a technique, not just whether you've seen it
  • Local-first: your data stays on your own device, no account required
Visit zizbjj.zizai.tech
WeChat Mini Program · private beta

Echo

A few minutes a day, to hold onto the small good moments

Echo isn't an early-education tool or a development tracker — most parent-child products assume you have a big block of time; Echo assumes you have a few minutes. The core loop is something you can finish every single day: a 30-second setup (just a nickname and birth month — your child never has to be on screen), then "Today", which matches your current mood and energy to one zero-prep game that takes 5 to 8 minutes, then one tap to log what you noticed, done in 5 seconds. After three logged sessions, "Growth" turns that real data into a growth story — nothing invented, and never compared to any other kid, only to your own child's past.

  • "My Childhood": reflect on your own upbringing in exchange for parenting suggestions tailored to how you actually parent
  • Reflections and photos stay on-device by default — nothing goes to the cloud unless it has to
  • A concentric-ripple visual motif, echoing how small moments of care spread outward over time
Visit echo.zizai.tech
For businesses

Lake2Ocean

Enterprise collaboration

An enterprise collaboration product, run independently at lake2ocean.top — head there for the full picture.

Visit lake2ocean.top