It’s also available on Android. You need to click the emoji button (on the left of the input box). And i will check the translation issue. Thanks for your feedback.
Discussion
There is no emoji left of the input box. Also when I select a picture there are even more Japanese? characters.
I will try to add screenshots to the post.
Can you see this button?

No I cannot. In that place I have the Gallery icon. See screenshot below.

Oh, the emoji is only available in the chat window, not in Moments yet.
Isn't this like a Twitter client for Nostr, where you discuss stuff with community?
I don't care about chats in these Nostr clients to be honest. I have WhatsApp and Signal if I want to chat.
If people try to chat with me on this client I would most likely block them as 99% of the times strangers trying to chat are scammers ( Most well known example: "Hello, how's your trade going.")
If I was a developer I would fully focus on well working community posts, layout and functionality (like Gifs for community posts!:) IMHO that community posts should also be the starting page.
That being said I like this little client and I'll keep it on the phone and see how the development goes.
Thank you for your suggestion. I think what you're looking for are Twitter-like clients such as Primal, Damus, or Amethyst. However, 0xChat is focused on exploring chat applications on Nostr.
Thank you for clearing that out for me, didn't know that. Now I understand where the name comes from:)
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