Level 1: The 8 tests in this level ensure you have read through NCERTs and at least one recommended textbook for the subject and upgraded the knowledge that you have attained through NCERTs. You get 3 sectional CSAT tests to get you started with practise required for CSAT.
Level 2: The 6 tests in the level ensure that you have a timely revision of all subjects. It also adds value to your knowledge by suggesting new but specific reading sources. It will help develop problem-solving skills and aptitude development. It will evaluate the knowledge base that has been built over level 1 and level 2.
Level 3: The SIMULATOR: The 8 GS Simulator Tests along with 4 CSAT Simulator Tests and 2 All India Open Mock Tests make sure that you have undergone different quality/difficulty and pattern for the Prelims paper by simulating the past 5 - 6 years of UPSC papers.