CamboSoft was founded in 2010 and started to develop iPhone App. For the time being, the iPhone market became the main focus and the company developed numerous successful titles since early 2009, which are available at the App Store. We start to develop a Khemara English-Khmer Dictionary for iOS4. This dictionary application delivers the most trusted reference content available. It is the largest English-Khmer Dictionary and has the most comprehensive content with a fast, intuitive interface. Providing concise definitions as a quick guide to meaning, the application helps users on matters such as spelling and usage. This dictionary can help foreigners learning Khmer and is also of use to Cambodians learning English. Our goal is to develop high quality app for a reasonable price.