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

Speed and stability

What makes an app feel slow, what makes it crash, and how both are measured rather than guessed.

Also in this issue

11
01

Why Spotify feels so smooth

An excellent interface is not necessarily the one you notice. It is often the one you completely forget about while usi…

May 23, 2026 · 2 min read
02

Your app is not slow. It just feels slow.

There's a world between a recent iPhone on fiber Wi-Fi and a mid-range phone in the subway. Users don't judge your code…

May 17, 2026 · 3 min read
03

The specifications document is not paperwork. It's your seatbelt.

A specifications document is not a professional-looking PDF. It's a survival tool that prevents the famous "oh… I thoug…

May 16, 2026 · 4 min read
04

Data Security: How to Reassure Users Without Scaring Them

Users need to trust your app with their data. But heavy-handed security messaging can be as damaging as no messaging at…

May 8, 2026 · 3 min read
05

The Two-Second Rule That Saves Mobile Sales

If your app takes more than 2 seconds to load a key screen, you are losing users before they even get to see your produ…

May 7, 2026 · 3 min read
06

Loyalty Cards Are Dead. Your App Is the Replacement.

That physical stamp card in your customer's wallet is invisible most of the time. A loyalty app is on the device they c…

May 6, 2026 · 3 min read
07

App Audit: Is Your Product Draining Your Users' Battery?

High battery consumption is one of the most silent killers of app retention. Users will uninstall an app that noticeabl…

Apr 30, 2026 · 3 min read
08

API, Server, Database... Understanding the mechanics without jargon

You do not need to know how to code to understand how an app works. The restaurant analogy explains everything simply.

Apr 16, 2026 · 4 min read
09

Why travel apps absolutely need an offline mode

A travel app that does not work without internet abandons its users at the worst moment. Here is how to design an effec…

Apr 15, 2026 · 4 min read
10

Why travel apps need an offline mode

Your user is on a plane, train, or abroad without data. Your app shows a blank screen. They will never come back.

Apr 14, 2026 · 3 min read
11

Your app is crashing and nobody is telling you

Silent crashes are your app's worst enemy. Here is how to detect them before your users leave.

Apr 14, 2026 · 3 min read

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