Forty5 turns IB Diploma revision into short daily lessons you can actually finish. Each lesson explains one idea, then checks it with exam-style questions, so you learn by answering, not by rereading notes.

WHAT'S INSIDE
• 54 IB Diploma courses, with HL and SL as separate courses: sciences, maths, economics, psychology, history, business, languages and more
• Over 1,700 bite-size lessons that follow the current IB subject guides
• Exam-style questions with a clear explanation after every answer
• Unit summaries, diagrams, flashcards and a glossary of key terms
• IB-style papers and timed mock exams to practise under exam conditions
• A review list that brings back the questions you got wrong

LEARN LIKE A GAME
• Earn XP, level up and keep your streak going
• Win coins and open chests, earned only by playing, never sold for money
• Combos for answers in a row, daily rewards and weekly tournaments
• Friendly duels and leaderboards with friends, your country or the world
• Add friends by exact username only, and there is no chat with strangers

MADE FOR STUDENTS, TRUSTED BY PARENTS
• No ads, ever
• Rewards come only from correct answers
• Students under 16 stay out of public rankings unless they choose to appear
• Parents can link their own account with an invite code to follow progress

YOUR LANGUAGE
Questions, options and exams are in English, as in the IB exams. The interface is available in English, Turkish, Spanish, French, German, Arabic, Chinese, Hindi, Urdu and Russian, ...and lesson explanations are available in English, Turkish, Spanish, French, German, Arabic, Russian, Hindi and Urdu, with key terms kept in English.

FREE AND PLUS
Forty5 is free to use: every course, the whole first unit of each course, the first lesson of every other unit, the full game, reviews, flashcards, the glossary and a short mock exam.
Forty5 Plus unlocks every lesson, unlimited hearts, more streak freezes and full timed mock exams.
Plus is an auto-renewing subscription: monthly, every 3 months or yearly. Payment is charged to your Google Play account. The subscription renews automatically until you cancel it, which you can do at any time in Google Play → Payments and subscriptions.

Terms of Use: https://forty5.app/terms
Privacy Policy: https://forty5.app/privacy

Forty5 is an independent study app. It is not affiliated with, endorsed by or connected to the International Baccalaureate Organization. "International Baccalaureate" and "IB" are trademarks of the International Baccalaureate Organization.