Python, Step by Step vs Learn Binary

A quiz-based Python learning app, sized for your phone. Python, Step by Step is a Python intro built for people learning to code for the first time. Tap-only micro-lessons that take a few minutes each cover the basics — variables, data types, branching, loops, functions — without ever asking you to type a single line of code. Highlights - A few minutes per lesson. Built for your commute, your coffee break, your before-bed reading - 16 units — from the basics all the way to classes, exceptions, and the standard library - Varied exercises — predicting output, filling in blanks, reordering lines, and more - All learning content is free. No paywalls - Streaks (consecutive days) help you build the habit Who it's for - People just starting with programming - Anyone who needs to pick up Python for work or a career switch - Anyone who wants to touch a bit of code in short bursts What you'll learn (16 units) 1. Welcome (first program, print, comments, input) 2. Variables and Data Types (numbers, strings, booleans) 3. Doing Math (operators, f-strings) 4. Branching (if / elif / else, logical operators) 5. Repeating (for / while, break / continue) 6. Functions (defining, arguments, return) 7. Talk to your program (input, prompts, interactive programs) 8. Group with lists (create, index, loop) 9. Dictionaries and tuples (keys and values, sets) 10. Classes 101 (__init__, self, methods) 11. Exceptions (try / except, raise) 12. Files (open, read, write) 13. Functions, leveled up (lambda, *args, map / filter) 14. Class inheritance (super, overriding) 15. Comprehensions and iterators (generators, yield) 16. Standard library (math, random, datetime, os)

Finally understand binary and hex — by doing, not memorising. Learn Binary turns number-base conversion into fast, satisfying drills. See a number, build the answer on a tappable bit row or a clean keypad, and get an instant verdict with the place-value breakdown behind it. It's built around how you actually learn: a level climb, an ~80% mastery gate, and a three-minute daily habit. WHAT'S INSIDE - The drill — convert decimal ⇄ binary ⇄ hex, both directions. Tap the bits or type the digits, confirm, and see exactly why the answer is what it is. - The nibble block — the standout: see how 0x61 = 0110 0001 = 97, with hex sat over colour-coded 4-bit nibbles. This is the trick that makes hex click. - A level climb — one level per bit, from the first switch up to the full byte (the 256 Club) and beyond. Clear a level test to unlock the next. - Two's-complement — read and write signed bytes, with the sign-bit reveal. - Bitwise ops — AND, OR and XOR, worked one column at a time. - Byte Speed Run — an optional 60-second timed challenge once you've earned it. - Daily goal + streak — a gentle habit, with a streak freeze so one missed day doesn't wipe your progress. - Explore — scrub a number and watch decimal, binary and hex move together. BUILT RIGHT - Fully offline — no account, no sign-up, no tracking required. - A clean, friendly light design in apricot and teal. Remove ads with a single one-time purchase — it removes the interstitial ads, and it's the only thing we'll ever ask you to buy.