Preparing for the GMAT, LSAT or GRE is no easy feat. Prospective grad school students typically lead busy lives, and as a result, there’s often little time left for studying for any of these exams. Fortunately, mobile apps have been developed to help prepare students on the go. Whether it’s on the train on the way home from work or at a study session on location, exam prep can happen anywhere students happen to be. Here are some of the top apps that can help you practice for the big day.

1. The Official Guide for GMAT® Review 2015 Mobile App
When seeking a mobile app for the GMAT, it might be best to go directly to the source. Downloading the Official Guide for GMAT® Review 2015 Mobile App not only gives users the ability to study on the go, but it also allows them to register for an exam and find a test center straight from their mobile device. It’s customizable and can be programmed to display a predetermined variety of questions across the verbal and quantitative sections of the exam. Download the app for insight straight from the creators of the exam.

2. Economist GMAT Tutor
The Economist GMAT Tutor app gives exam takers the ability to squeeze in a few minutes of extra study time wherever they are. It offers 100 hours worth of content, more than 5,000 sample questions and adapts to the user over time. The app keeps a record of questions answered correctly and incorrectly, and even provides users with the opportunity to live chat with a tutor who can discuss problem areas. It guarantees exam takers will earn a score at least 50 points higher than their original score after completing its GMAT prep plan.

3. LSATMax
For aspiring law school students, the LSATMax app is a helpful resource. Created by Harvard Law School alumni, it offers users more than 7,000 real questions that are officially licensed. Users can access message boards within the app that offer live assistance so questions never go unanswered. The app also contains more than 70 hours of video lectures that arm users with the information they need to do well on the exam. Content lives on the app, so it can be accessed virtually anywhere without the need for an Internet connection.

4. Magoosh GRE Prep
Students getting ready to take the GRE also have a great deal of studying ahead of them. With the Magoosh GRE Prep app, users have access to more than 1,000 practice questions at their fingertips. The app doesn’t just tell students the correct answer – it goes a step further. Each question has an accompanying video with an explanation of why the answer is correct and also offers insight into common pitfalls and mistakes. Additionally, the app offers general video lessons that cover different sections of the exam.

5. Veritas Prep GMAT on Demand App
While some people would prefer to take exam preparation classes with a tutor in person, others simply don’t have the time. They would rather have the convenience of self-guided instruction on their mobile device. With the Veritas Prep GMAT on Demand App, they’re able to learn from a credible source. The app offers 12 pre-recorded lesson plans that effectively prepare test takers for the exam at their own pace. It includes lessons on everything from geometry to data sufficiency to advanced verbal strategy.