2008 - Current

Products Created


I designed and built AccelaStudy to help people learn foreign language vocabulary faster, to help myself master a deck of Turkish flashcards I had been carrying around for 2 years. AccelaStudy was an immediate success and has grown to millions of users worldwide.

AccelaStudy Vocabulary Builder

Building on the success of AccelaStudy, which was originally designed for foreign language vocabulary, a new product was released which focused on English vocabulary for the GRE, GMAT, ACT, SAT, and TOEFL exams.


iPhraseBook was the world's first expandable phrasebook. Renkara approached HarperCollins and negotiated a license for their excellent phrasebook content, including audio pronunciations. A user can buy iPhraseBook, which comes with English, Spanish, French, German, and Italian, and using the In-App Purchase capability of iOS, can purchase additional languages for the product.


Contig is a mathematics game where three numbers are combined with basic math operations to arrive at a number on a gameboard. It is a competitive tournament game in many school districts around the United States. Contig was Renkara's first iPad application and one of the applications built without a physical device to test with. At the time development started, the iPad was not yet released and it was a race to have the product in the App Store on the day the iPad shipped.

Flashcard Champion

Flashcard Champion is an educational app for iPhone released in three versions. Basic Math was designed for children to help them memorize the basic addition, subtraction, multiplication, and division of numbers 1 - 12. States was designed to help children recognize each of the fifty US states and memorize their capitals. Presidents was built to help children recognize all of the American presidents.

Translate Now!

Translate Now! is a universal translator app built on top of the Google Translate service. It was featured by Apple around the world and downloaded over 1,000,000 times.


A collaboration with award-winning author Michael Rowley, KanjiPictoGraphix delivers Rowley's kanji mnemonics in a beautiful and responsive iPhone and iPad experience. KanjiPictoGraphix took over 2 years to design and build.