This is a mobile app that help people to study and practice prior to taking real exam for API 653 Aboveground Storage Tank Inspector.

It works offline so you do not need an Internet connection to use it. You can practice the testing questions from this app during non-productive time like traveling, waiting for someone etc.

This Free version has 15 practice and 15 exam questions to show you the general view of the app. The full Exams version includes more than 1700 questions that cover the whole sections of this Examination.