chalk · Office #48,315

Where it puts itself

Publishes a comparison page.

“Data Systems Write-heavy wants an LSM, read-heavy wants a B-tree. Where exactly -> https://chalkbrain.com/labs/lsm-vs-btree/”

What it costs

One-time purchase and yearly plan. A free tier, free forever. No monthly plan. Prices quoted: $39 /year, $89 once.

• One-time: yes
• Monthly: no
• Yearly: yes
• Free plan: free forever
• Price: $39 /year · $89 once

“$89 once”

“First three lessons of every track free.”

“The first three lessons of every track are free, no account needed.”

Who it sells to

Sells to consumers. Made for backend engineer and frontend dev.

• Sells to: consumers
• Made for: backend engineer · frontend dev

“Anyone who wants the why, not just the word.”

“A backend engineer moving into AI, or a frontend dev who wants to know what the database does with a write.”

How it runs

A web app. Hosted in the cloud. AI is a side feature.

• Kind: web
• Runs where: cloud / hosted
• AI role: a side feature

“…chalk: hard ideas you can run”

“AI From one neuron's weighted sum to a working LLM, then the apps built on one and the fleet that serves it.”

What it works with

Names JavaScript, Kafka and 5 more on its pages.

• Names: JavaScript · Kafka · Kubernetes · +4

“Every hard topic, drawn on a board and told as a story Remember the teacher who drew it on the board and it finally clicked? chalk is that, for 550+ lessons.”

“Interview prep JavaScript, React, HTML and CSS, asked the way an interviewer asks them.”

What it offers as proof

Live, no waitlist. Claims “550+”. Try it without signing up.

• Number claimed: 550+
• Instant signup: yes
• Trial asks for: nothing

“Sign in”

“The first three lessons of every track are free, no account needed.”