An app icon is the smallest billboard in the world. It is a logo that has to survive at 1024×1024, at 60×60, in dark mode, in light mode, on a wallpaper that you cannot predict. Here is a working theory on what makes a good one in 2026, after designing the icons for all eight Tappa apps.

1. One idea, drawn boldly

The icons that work have one central idea. A symbol, a letter, a shape, a metaphor. Not three. Not a tiny scene with depth-of-field and three pieces of UI in it.

Look at the icons of the apps you actually use. Phone, Messages, Maps, Calendar. Each one is a single bold idea. That is not aesthetic conservatism; it is what survives at 60×60.

2. Test at thumbnail size first

Design at 1024×1024. Judge at 60×60. If the icon does not work at 60×60, it does not work, no matter how beautiful the big version is.

We keep a sheet of every Tappa icon at thumbnail size on a printed page next to the workstation. Every new icon design lands on that sheet for a week before it ships. If it disappears next to the others, we redesign.

3. Restraint with gradients and shadows

The iOS icon style has settled into a comfortable middle: subtle gradients, occasional inner shadow, no skeuomorphism, no flat-out flatness. Lean toward less. A flat, confident shape ages better than a shimmery one.

Apple's own icon guidance is closer to a poster than to a photograph. Follow it.

4. A specific colour that you own

Each Tappa app has a single colour that is its own. RedRate is — yes — red. Lunara is a deep indigo. Minutelore is a soft warm cream. Tattoo AI is bone-white on black.

This is partly aesthetics and partly recall. A user who has seen your icon once should be able to recognise it on a screen of 30 apps because of the colour, before they read the name.

5. No text, almost always

Text on icons reads at thumbnail like noise. Even a single letter is a risk; a whole word is a definite no. The exception is a single character (a letter, a kanji, a numeral) used as the symbol, not as a label.

Three of our icons use a single character. The other five do not. Both work; nothing in between does.

6. Dark mode and the new tinted modes

iOS now offers users dark and tinted icon variants. Apple generates these automatically if you do not provide them. The auto-generated versions are okay. The custom versions are better.

For every Tappa app, we ship a hand-made dark variant and a hand-made tinted variant. This is real work. It is also the difference between an icon that looks deliberate and one that looks merely allowed.

7. Avoid the trends

The "icon-with-a-blob-behind-it" style. The "icon-with-a-photo-of-the-app-inside-it" style. The "icon-that-looks-like-a-3D-render" style. They date fast. The icons that survive a decade are the ones that look like they were designed for the system, not for a moment.

A small recommendation

If your icon is more than two years old and you have not revisited it, set aside a week. Open the design file. Try one alternate. Test it at 60×60 next to your competitors. Often you will find the original holds up. Sometimes you will find a better one waiting.

The icon is the first impression. Treat it like one.