LGV Theory Test Kit 2021, developed by Iteration Mobile S.L, is a mobile application that offers a comprehensive test system for the UK LGV Theory Test. It provides access to the latest Revision Theory Test questions and answers from the Driver and Vehicle Standards Agency (DVSA), the people who set the tests. The app also includes the Hazard Perception Test, which features 26 CGI videos, and a digital version of The Highway Code.

The app is suitable for learners of car, motorcycle, LGV, and PCV drivers, as well as ADIs and PDIs. The questions are selected using an intelligent learning system algorithm, which takes into account the user's latest scores and the questions that they need to practice more. The app has a modern and easy-to-use interface, which includes features such as a test simulator, practice by category, review all questions, the Highway Code, and a statistics module to track and monitor progress.