Reffly: Spelregels oefenen

Zeb Koppes

About this app

Reffly helps you, as a referee, master the rules of field football. Not by reading through a list, but by practicing with questions that reappear precisely when you are about to forget them.

SMART REPETITION

Every question is in one of five boxes. If you get it right, it moves up and you will see it again later. Wrong, it comes back quickly. This way, you spend your time on what you don't know yet, instead of what you already know.

EXPLANATION WITH EVERY ANSWER

Knowing that you were wrong doesn't help. Knowing why does. The reasoning is included with every question, and where it matters, the nuance that makes the difference between two answers that both seem correct.

THE CHANGES FOR 2026/2027

All rule changes for the new season listed, by rule, along with what applied previously. You can practice on them individually, and you can switch between amateur and professional football so that you only see what applies to you.

AT YOUR LEVEL

Do you referee in a district, at your own club, or nationally? You will receive the questions relevant to that. We omit questions relevant to districts or clubs that only apply to professional football.

SEE YOUR KNOWLEDGE GROW

Your progress runs from new to learning to mastery. Statistics show which topics are lagging behind, so you know where the gains are. And there are achievements to be made, from your first clean sheet to mastering all twenty-five topics.

HASSLE-FREE

No ads. No subscription. You can start immediately without an account. If you want to transfer your progress to another device, create a free account using only your email address, without a password.

The app works without an internet connection.

ABOUT THE QUESTIONS

The questions come from the rules documents that the KNVB publishes publicly every year. The explanations are ours. Reffly is an independent practice app and is not affiliated with the KNVB or the IFAB. In case of doubt, the official rules always apply. Questions or found something that isn't right? Email [e-mail].

What’s new

Een nieuw startscherm waarop alles in één oogopslag staat: je beheersing, de moduskeuze en je gereedschap. De rekentool en de fysieke test zijn verhuisd van je instellingen naar de startpagina.

De accountpagina is opgeruimd en de inlogcode vul je nu in zes vakjes in.

Verder: de uitleg opent verder als je een vraag fout had, de antwoorden blijven leesbaar in het donker en voor docenten is er een set met de moeilijkste vragen.