I have been diving since I was 16 years old and continue to enjoy the science, sport, the creatures ... recording such on video and with photos as a 54 year old retiree. My husband and I are both Master Divers who, needless to say ... have much dive experience. However, we found this tool very sobering as we tested our memories and retained training. This tool is a truly useful refresher for anyone who continues to learn to be a better Diver ... A good diver is always learning.

I’ve used this app for years, more than a decade probably. I go long spells between dives and regularly need to refresh my scuba knowledge. I’ve always been disappointed by how guarded the big Scuba organizations are with their educational information. I understand that they need to make some money but it seems counterintuitive to hide basic scuba safety skills behind a paywall. bravo for this app.

This app is great for anyone interested in learning about scuba, wants to try their hand at example exams. Some of the questions are very close (not the same as the real exam I just took from PADI), but make sure you understand the same principals. It also gives you explanations on why you got it wrong. Love this app, well worth the few $$'s. Thank you to the developers who wrote this app! Robert

I'm about to start open water training and find this app a great companion to the book and video I'm reviewing for the class. I've taken the mini quizzes a dozen times or so and always review the incorrect answers. After a few days I started taking the 50 question quizzes and do very well on them. I'm thinking this kind of preparation should make the class easier and more enjoyable.

It was a great format to test knowledge and correct deficiencies before the final exam. Plus, I expect it will be helpful as a refresher before the next excursion / vacation. To that end, it would be great if future versions of the app had an option to send periodic alerts asking a random question just to keep me on my toes.

The content in this app is great for newbies or seasoned divers. All the custom settings for each quiz are really neat too. Being able to choose which agency you are certified with is awesome. I think one of the coolest things is the explanations to each question and a large theory section for even more knowledge. Awesome app!