Pestle+ is a free Chrome add-on developed by ibhereforyou, designed to enhance your math revision experience. The program focuses specifically on Math SL and HL for the International Baccalaureate (IB) curriculum. With Pestle+, you can effectively organize your revision by difficulty level, allowing you to challenge yourself and improve your skills.

One of the standout features of Pestle+ is its unique algorithm that organizes all math questions by difficulty. This algorithm combines Natural Language Processing techniques with information about question length and position in the paper, utilizing IB examiner remarks. This ensures that you are always practicing at an appropriate difficulty level, enabling you to refine your skills effectively.

Pestle+ also offers a Timer feature, which calculates the amount of time you would have to complete a question during your final IB exams. This feature allows you to attempt questions at varying fractions and multiples (25%, 50%, 75%, 100%, 125%, 150%, 200%), catering to your individual needs.

Additionally, each question in Pestle+ leads you to 10 related questions that are tagged by difficulty. This feature enables you to achieve mastery of sub-topics at your own pace, further enhancing your understanding and preparation.

Please note that the Pestle+ extension has been developed independently of the Pestle website, and not by the original developers. The original developers retain the authority to modify or remove access to the Pestle website.