How we make our cards

How we choose the words

Every course has the same 184 lessons of 12 words, so all our courses teach the same 2,208 words. Each lesson is built around one topic, like greetings, numbers or the months.

The words are ordered by frequency and everyday usefulness, with input from language teachers. So our lists are not a raw frequency count: little words like “the” and “of” don’t fill the top, and what you need in a first conversation comes first.

Pictures and audio

We use Gemini, Google’s AI, to create some of our pictures and audio, so every word can have a picture and natural, native-sounding audio.

How we check them

• Automatic checks. Audio clips are transcribed back into text and compared with what they should say, and a listening check flags clips that sound wrong. A clip that fails is made again.
• Listening by ear. We listen through the courses one language at a time and replace the clips that sound off.
• Text reviews. We review translations and example sentences across languages and fix the ones that are wrong, unclear or unnatural.
• Your reports. We read and check every report. When a clip needs replacing, we make a new one and listen to it before it goes live.

Spotted a mistake? Tell us

On our flashcards pages, use the “Spotted a mistake? Tell us” link. In the app, tap the flag on a card. Or write to us on the support page.

Tell us which word it is and what looks wrong. We fix mistakes in the course itself, not just on one page.

Why we work this way

We want every word in every course to come with the same things: a picture, natural audio and an example sentence.

Read more about the learning method on how it works, or about us on our about page.