In the free app you have four interlinked Tests of increasing difficulty with answers and explanations. These will find your level and suggest a programme of study. The test results, the analysis and the study programme will remain when you upgrade to the Tenses, Full or Business version so that you can improve your English. Options to upgrade are in-app when you Quit and full details of content are on the TutorScreens website.
In the free app you also have an example of the Phrasal Verbs flashcards (with translations Fr Ge It Sp), a live time-line sample of Tenses, the first few Favourite Mistakes (with answers), a plan of attack for studying English, and an Introduction to the software. It is fully functional offline.
It is ALL in English, so complete beginners will need help or a dictionary, but up to Advanced level it can help you. It can help you understand and speak better.
It is very good if you have no teacher - and if you have a teacher (especially if he or she knows the app!) It is also good if you are a teacher and need to check things. It is good for corporate training - and we can include your special vocabulary lists.