I purchased the English rocket language, but I have encountered some issues with the audio on the Android app. The words and phrases do not play correctly, but they do work properly on the laptop browser. However, when trying to record on the laptop browser, only the last part of the word or half of the sentence is recorded, which is very inconvenient. As a solution, I have been playing the words and sentences on my laptop browser and attempting to record on the Android app. Rocket language has a 60-day refund policy, so I will be requesting a full refund due to these issues.