Opening Dojo is an iPhone app developed by Up Quark Labs LLC. It falls under the category of Education & Reference and is available for free. With Opening Dojo, chess enthusiasts can enhance their knowledge and memorization of chess openings.

The app offers pre-built lessons that allow users to learn new openings in a smart and efficient way. Whether you are a beginner or an experienced player, the lessons provide a structured approach to understanding different opening strategies.

One of the standout features of Opening Dojo is the ability to create custom groups. Users can search through a database of thousands of openings or create their own groups. This flexibility allows for personalized learning and exploration of specific openings or variations.

The app also utilizes spaced repetition to schedule practice sessions based on the user's recall of each opening. This adaptive learning technique ensures that users focus more on the openings they struggle with, maximizing their learning potential.

Whether you prefer a structured learning approach or want to practice openings at your own pace, Opening Dojo offers both options. Users can practice openings as many times as they want, either following the recommended schedule or on their own schedule.

For more information about the app's privacy policy, you can visit their website at [privacy policy link]. The terms of service can also be found on their website at [terms of service link].