You’re on the train. You want to practice that DP problem. You open LeetCode on your phone and immediately regret it.

The Hidden Time

Your day has gaps:

Commute: 30 min
Lunch: 30 min
Waiting rooms: 15 min
Toilet: …10 min

That’s 1.5 hours. Every day. Currently wasted on Twitter.

20 minutes daily beats 3-hour weekend sessions you never do. The person solving one problem on their commute will beat the person “planning to grind this weekend.”

But you can’t use this time. Because mobile coding tools suck.

The Three Fatal Problems

Every app tries to shrink a desktop IDE onto a phone. This fails in three ways:

1. Cursor Positioning

Your finger: ~10mm wide. Characters on screen: ~2mm wide.

You can’t tap precisely between characters. So you delete and retype. A one-character fix becomes a full line rewrite.

2. Syntax Entry

TypeScript needs ( ) { } [ ] ; : < > => constantly. On iOS, each symbol is 2-4 taps through keyboard layers.

(x) => x * 2 takes 15+ taps. That’s not coding.

3. No Feedback

Console output scrolls off the screen. You can’t see what your algorithm is doing. Debugging becomes guesswork.

The Core Insight

Developers don’t think in characters. They think in constructs.

You think “I need a loop here” or “this needs a hash map.” Not “f-o-r-space-open-paren…”

So why does every mobile editor force character-by-character typing?

Code is Structure

That’s the fix. Treat code as structure, not text.

Navigate by token. Insert by construct. Run tests locally.

Fix the editor, unlock the time. Suddenly you have 10+ hours of practice per week you didn’t have before. Join the waitlist.