algorithm practice for mobile

Your phone isn't the problem.
Your editor is.

An editor that understands code structure, not just characters. No AI. No credits. No bullshit.

Get notified

Mobile coding is broken.

Fat fingers. Broken cursor positioning. Uncontrolled zoom. Every mobile code editor treats code like text. It's not.

We got mad on the train. So we built something better.

An AST-aware cursor.

Move by token, not character. Select by scope, not drag. A curated problem list to practice on.

~/marketing

Choose your difficulty.

Structured progression. Unlock topics, earn badges, complete challenges.

500

Starter

New to algorithms. Maximum guidance.

250

Standard

Some experience. Solid coverage.

150

Focused

Know the basics. Hit the patterns.

Speedrun

Interview next week. Essentials only.

Or just pick whatever. You're not locked in.

problems

patterns

∞

runs

paths

TS/JS

runtime

2000

feedback

Not a video course. Not a quiz app.

A real editor. Real problems. Actually usable on your phone.

Your commute. Your lunch break. Works offline.

$0 to start. $39/year. $59 forever.

What's done.

Last internal release: 2 Dec 2025

App

✓ Token navigation
✓ Cursor joystick
✓ Structure insertion
✓ Offline execution
◐ Editor core
◐ Problem library
◐ UI design
○ UX polish
○ Timed mode

Infrastructure

✓ Landing page
✓ Blog system
◐ Auth & sync
○ Payments
○ Analytics
○ Open source editor

Business

✓ Pricing set
✓ Waitlist system
○ App submission
○ Marketing
○ Launch

✓ Done

◐ In progress

○ Planned

Get notified at launch.

We're building the mobile coding experience that should've existed years ago.

Q2 2026. One email. No spam.

Your phone isn't the problem. Your editor is.