iPhone Screenshots


Improve your exam scores in just 5 minutes a day, right from your iOS device!

Vo is an efficient, easy-to-use app designed to build your vocabulary and increase your exam score.

Our app features intelligent algorithms that get to know you the more you use the app. It adapts to your personal skill set, helping you study more efficiently by focusing on words that you are having trouble with.

- Built in library of thousands of words, definitions, synonyms and antonyms

- Use Practice Mode to learn new words

- Prove your knowledge in Test Mode

- Add your own list of difficult words and definitions

- Set your test date for daily study reminders

- Track and analyze your progress in the “My Stats” panel

- Smart technology that personalizes tests to help you learn troublesome words

Vo - An vocab tutor in the palm of your hands

What's New

Version 2.5

Brand redesign! We hope we make Vo shine even brighter as the leader in Vocab!

Ratings and Reviews

Very usefull!!!!!

Il titan

Really useful app for SAT

Highly recommend it!

Raul Baúl

Review: I love this app. As a busy high school junior with a part-time job, prepping for SAT often gets put on the back burner. I have very little time to sit down and study; which is why I love this app. With this app, I can study while on the bus, during breaks, and quickly before going to bed. What I like most about this app is that I can add my own words and personalize it. It's convenient, interactive, and customizable. I highly recommended this app for any/every high-schooler who doesn't want to waste hundreds of dollars on SAT prep books that will most likely be sitting on your bookshelf until the day before the exam. So get this app.

So helpful!!

Toni Tonez

I'm preparing to take my SAT again and I need to focus on some vocab. This is so helpful, not just because of all the words, but because of how you practice learning them and how you are tested. I also love that you're not just tested on definitions, but synonyms and antonyms, as well.
Thank you!


Guillermo Saracco
9.9 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Guillermo Saracco
In-App Purchases
  1. Full SAT learning experience $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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