Conditional sentences are widely used in English, but they are difficult for language learners.
Here is an App with detailed notes, a bank of 200 questions , 4 practice activities and 2 quizzes on this aspect of English.
The first quiz, with 10 items chosen randomly from a set of more than 40 items, tests your ability to recognize the type of a conditional sentence. The second quiz, with 10 items chosen randomly from a set of more than 50 items, tests your ability to use verbs correctly in conditional sentences.
It's designed for English language learners (ELL students) regardless of their levels of English language proficiency.
Even though its primary focus is for ESL/EFL, native English speakers may also find this app interesting.
TESL/TEFL teachers may want to recommend it to their students.