[WallFit] Why I Built WallFit - 1

— A Wedding Gift That Became an App

WallFit didn’t start with market research.
There was no product strategy, no revenue model, no roadmap.

It started with a sentence.

“I wish there was an app that could do this.”

The person who said that is now my wife.

It Started with a Simple Frustration

She wanted to place multiple photos on a single canvas and use it as a wallpaper.
That sounds simple. But most apps we tried had the same problems.

  • The aspect ratio would shift unexpectedly
  • The preview looked fine, but the exported image was blurry
  • Layout options were either too rigid or overly complicated

“It’s almost there, but not quite.”

Technically, none of these were hard problems.
They just weren’t handled carefully.

At the time, we weren’t married yet.
I liked the idea of building something meaningful before the wedding — something she would actually use.

So WallFit started as a personal tool.
Not a product.

It Wasn’t Meant to Be Published

In the beginning, WallFit had only one user.

The priorities were simple:

  • It had to be usable without explanation
  • It had to produce predictable results
  • If something felt wrong, it had to be fixable immediately

Instead of listing features, I asked a few basic questions:

  • What is the final image actually used for?
  • Is it acceptable if preview and export differ slightly?
  • Does “more options” really mean better experience?

The answers were conservative.

The goal wasn’t flexibility.
It was reliability.

Why I Eventually Made It Free

The decision to release WallFit publicly wasn’t idealistic.

When I showed it to people around me, the reaction was often the same:

“I’d try it.”

But the moment they saw a price — even a small one — that curiosity stopped.

The barrier wasn’t the value.
It was the friction.

WallFit isn’t a high-frequency app.
It’s a utility you open when you need it.

Charging for it created more resistance than it justified.

So I made it free.

If it generates some ad revenue, that’s enough.
If not, that’s fine too.

The goal wasn’t to build a business.
It was to remove friction.

In the next part, I’ll talk about the part that took the most time:
grids, spacing, aspect ratios — and how AI helped structure the implementation.

#wallfit #app #ai #llm #background #image #maker

WallFit – Wallpaper Maker - Apps on Google Play
Turn multiple photos into a clean, perfectly fitting wallpaper
WallFit – Wallpaper Maker App - App Store
Download WallFit – Wallpaper Maker by Teuk-geon Kwon on the App Store. See screenshots, ratings and reviews, user tips, and more apps like WallFit – Wallpaper…