Mickael Romaniello, the developer who builds the apps Mickael Romaniello 30 minutes, no slides, nothing to prepare.
Invent Better Blog

Keeping people using it

Why people leave an app in the first week, and what keeps them coming back.

Also in this issue

12
01

The fake "perfect button"

"Let's redo the button again." Meanwhile, the real product problem stays elsewhere. The product is trying to look prett…

Jun 12, 2026 · 3 min read
02

Why Booking sometimes exhausts its users

Booking is extremely effective. But constant pressure — "only 1 room left", "booked 14 times today" — pushes cognitive …

Jun 10, 2026 · 2 min read
03

Nobody had tested the app like a real user

The team knows the product so well it stops seeing the obvious problems. And that's exactly where the disasters start.

Jun 1, 2026 · 2 min read
04

Your app can save users time

Many apps add features. Very few really ask: "what time are we saving for the user?"

May 29, 2026 · 2 min read
05

Your app talks too much

Notifications, popups, tooltips, emails, tutorials, reminders, promotions. Some apps talk a lot. Too much. And it gets …

May 27, 2026 · 2 min read
06

Your app asks too much, too soon

Create an account, confirm an email, allow location, import contacts. All before the user even knows the product.

May 25, 2026 · 2 min read
07

Why Duolingo keeps users for so long

Many apps ask how to add more features. Duolingo mostly asks how to make people want to come back tomorrow.

May 22, 2026 · 3 min read
08

Why Dark Mode Is More Than Just a Style Choice

Dark mode became a user expectation almost overnight. But implementing it properly requires more than inverting your co…

May 5, 2026 · 3 min read
09

Why Designing for the Thumb Changes Everything

Most people use their phone with one hand. If your app's key actions require a stretch or a second hand, you are losing…

Apr 29, 2026 · 3 min read
10

What Is a Smart Push Notification? (Plain and Simple)

Push notifications are one of the most powerful tools in mobile — and one of the most abused. Here's the difference bet…

Apr 27, 2026 · 3 min read
11

The hidden button that cuts your sales in half

A beautiful app that does not convert. Discover how a single misplaced button can cut your sales in half.

Apr 19, 2026 · 3 min read
12

Your app's first screen decides everything

Your user decides in 7 seconds whether to keep or delete your app. Here is how to win that battle.

Apr 14, 2026 · 3 min read

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