Train your brain
Master programming by imprinting concepts with repetition.
The hacker way to learn: take one concept, write it fifty times, and let the pattern harden. MasterOnce keeps you focused, fast, and relentless.

Select your language
Start with Swift and expand to more stacks as they drop.
Lock onto a concept
Strings, arrays, functions, loops. One target at a time.
Repeat 50 times
The loop is the lesson. Muscle memory does the rest.
Available Swift Concepts
PreviewStrings
Think of a string as a label or a note. Just like you might write your name on a label, a string is how computers remember text. Any word, sentence, or bunch of letters in quotes is a string.
Preview this concept →
Arrays
An array is like a toy box that holds things in order. You can put toys in, take toys out, and find a toy by counting which spot it's in. The first toy is in spot 0, the second is in spot 1, and so on.
Preview this concept →
SwiftUI Text
Text is like a label sticker you place on the screen.
Preview this concept →
Sign in with Google to save your progress
MasterOnce Blog
SwiftUI drills, mindset, and repetition strategy
Read short guides that explain why this learning loop works.
