Question 1

What age is Julebu suitable for?

Accepted Answer

Julebu is designed for children ages 3-12 for English sentence-building games, while also offering difficulty-graded decks from elementary to graduate-level English. Toddlers can drag cards, older students can type, and adults can use the AI text parser to import their own learning materials.

Question 2

What is Krashen's i+1 Input Theory?

Accepted Answer

Stephen Krashen's i+1 Input Hypothesis states that language acquisition occurs when learners comprehend input slightly above their current level (i+1). Each Julebu level precisely matches your ability with progressive difficulty, allowing English grammar to be absorbed naturally rather than through rote memorization.

Question 3

Is Julebu free?

Accepted Answer

Core sentence-building games and the vocabulary notebook are completely free. Advanced features like AI grammar explanations, AI deck expansion, and custom text parsing consume learning credits. New users receive initial credits upon registration and can earn more by completing sentence challenges.

Question 4

How is Julebu different from traditional vocabulary apps?

Accepted Answer

Traditional vocabulary apps isolate words from context. Julebu emphasizes "sentence building" — acquiring grammar, word order, and intuition through assembling complete sentences in real contexts. With real-time AI grammar analysis and full-sentence pronunciation, you learn to speak complete, natural English sentences.