Although it is very easy to use as a camera, it is hard to use because it is English. Please improve to be able to speak Japanese.
デベロッパの回答 、 Hi, Thanks for the comments. We have translated our App Store page description. We are working on translating the app and we should have this sorted soon! If you have any other questions please let us know. Email us hello@shootmavis.com. Thanks
Purchases not being recognized? Most of the useful features of Mavis require one or more of the additional modules; I’m fine with that, it still seems like it would be an excellent value and I knew how that would be before I purchased it. But even though I’ve bought the “Big Bundle” and see it in my purchase history, none of those features are available. I’ve removed and re-added the app, restarted my phone, hit “restore purchases,” and still nothing.
So it’s basically no better than the built-in video app that comes with the iPhone...worse, actually, because with the iPhone I can change settings like frame rate.