a chatbot that remembers, powered by Walrus Memory
Tell Playbook what you’re building. It draws it on a workbench, you turn the dials and press the big red button. Pass or fail, it remembers, so next time you start where you left off.
Free. No email needed to sign up. Works on your phone.
Memory that follows you
Most chatbots forget you the moment you close the tab. Playbook saves the important bits to Walrus Memory: your limits, your best results and everything that broke.
The memories are stored on Walrus, a decentralized storage network, under your own namespace. Sign in on another phone or laptop and Playbook still knows you. Want them in your own name? Bring your own Walrus Memory account.
Each memory is one short sentence, stored as a blob on Walrus.
How it works
“My bridge can only use 50 sticks.” Plain words, like texting a friend who's good at maths.
Playbook picks the right simulation and turns the dials to match your numbers.
The test runs in front of you. Pass or fail, you get the reason and one thing to try next.
Your limits, best result and failures go to Walrus Memory. Next time, it starts from there.
Find the breaking point
Scroll to stack weights on both bridges.
See it happen
Every bench is a small, real simulation: forces in a bridge, people in a checkout line, a battery through the night, money against inflation. Turn a dial and the drawing and the numbers change straight away.
When a test fails, Playbook tells you why in plain words, and what to try next.
now: 1 in line vs 0
18:00: 100% left
day 0: 0 need a bed
year 0.0: worth 100% of the number
The memory switch
There’s a switch at the top of the app. With Walrus Memory off, Playbook asks the same questions every time, like most chatbots. Turn it on and it greets you with your own numbers.
Same bot, same model. The only difference is the memory.
Hi! What are you building? What materials can you use, and is there a budget?
…for the third time this week.
Welcome back, Amara. Your limit is 50 sticks with wood glue, and the flat beam snapped at 2.1 kg, so I’ve set the dials to your best design: the Warren truss (about 8.4 kg, 23 sticks). Want to try it 2 cm taller?
What people use it for
22 benches are ready to go, from egg drops to loan offers, each with a handful of one-click scenarios to start from. Each one remembers your settings and results separately.
Which popsicle-stick truss holds the most for the fewest sticks?
How many cashiers so nobody waits 3 minutes?
Will the battery last the night?
Best launch angle, air drag, a pendulum on Mars.
Do the hospital beds run out?
Could you stop in time on a wet road at 80?
Will ₦60,000 a month beat 25% inflation?
How much water and pressure to reach 40 m?
Will this plank sag under my books?
How many ropes to lift a 120 kg engine?
Parachute or padding: what saves the egg?
Which popsicle-stick truss holds the most for the fewest sticks?
How many cashiers so nobody waits 3 minutes?
Will the battery last the night?
Best launch angle, air drag, a pendulum on Mars.
Do the hospital beds run out?
Could you stop in time on a wet road at 80?
Will ₦60,000 a month beat 25% inflation?
How much water and pressure to reach 40 m?
Will this plank sag under my books?
How many ropes to lift a 120 kg engine?
Parachute or padding: what saves the egg?
Lagos to Abuja: how many fuel stops?
How big a tank so we never run dry?
What will the gen cost me in fuel each week?
Is a 1 HP AC enough for this room?
Which appliance is eating my prepaid units?
Flat rate or reducing: what does it really cost?
When does my food stall pay for itself?
Can 500 people get out in 2.5 minutes?
Burette, indicator, and the drop that turns it pink
Peroxide, catalysts and heat: how fast does the gas come?
Baking soda, vinegar, a balloon: which runs out first?
Lagos to Abuja: how many fuel stops?
How big a tank so we never run dry?
What will the gen cost me in fuel each week?
Is a 1 HP AC enough for this room?
Which appliance is eating my prepaid units?
Flat rate or reducing: what does it really cost?
When does my food stall pay for itself?
Can 500 people get out in 2.5 minutes?
Burette, indicator, and the drop that turns it pink
Peroxide, catalysts and heat: how fast does the gas come?
Baking soda, vinegar, a balloon: which runs out first?
Invent your own
Not on the list? Type something like “a rainwater tank for my house: does it run dry in the dry season?” In about half a minute the AI writes a working simulation with dials, checks that the numbers make sense, and opens it for you.
It draws with a box of over 900 sketch sprites: people, elephants, kekes, water tanks, generators, parachutes, hens, lifts and more, so your idea looks like the real thing.
A few of the ~900 sprites the AI can draw with. People are drawn as stick figures.
Try it
Pick a username and a passcode. That’s your account. Use the same ones on any device and your memory comes with you.