As someone that uses LingoDeerPlus daily, I felt I would hop on here to leave my thoughts. As one of the people using the iOS version, I can say I don’t have a single complaint at all, and I cannot recommend a better app to help practice.
To sum up the games, the app covers vocabulary, grammar, phrasal construction, and listening comprehension (can’t remember what free offered). In each of these sections there are usually two games with similar tasks. Their differences are quickly apparent, as one game focuses taking time to get the right answer, and the other is answering similar questions quickly; both have their place, and are incredibly helpful.
To be honest, I do not have any real gripes about the app at all. Even so, there are a few things that did throw me off at first:
I first attempted to use it in tandem with the LingoDeer app. When working with Japanese, there were a lot of games I couldn’t play early on, just because the content hadn’t been covered. This was especially true when it came to the two verb games in the grammar section, as verbs weren’t even touched until the 3rd (maybe 4th?) section. Really, it’s not a huge deal since you can still make use of other games, and of course all games without the app.
Loosely tied in with #1, the daily achievements usually ask you to play games you have no business playing, yet. It took me a few days, but I just started ignoring them all together, until I could make use of all of the games. Even then, there isn’t much use for the in-app coins yet, but if you have achievement OCD (like myself), you’ll want to complete these one way or another; best to know when you can.
As for the price, I hate subscription business models, so being that it offered great games covering multiple languages that I plan to learn, I just paid for the lifetime membership during a special ($49USD). Since then, I have seen 3 more specials offer it at the same price since, so if you want to go this route, it won’t take long to run across the same special (that or just ask support if they would give you a special price. Support team seems pretty cool).
I hope that helps! As a new member here, I wasn’t sure what would be expected, so if there is a question I didn’t answer, by all means ask away, and I’ll be happy to answer.