Hello, I hope this message finds you well.
I am a native speaker of both Japanese and English, and I have translated UIs for mobile phones. I use phone apps in both Japanese and English, and thus I can provide accurate and appropriate translation for your app. I had a look at the .png sample file you uploaded. The commands suggest it is a time management app?
I can work to the specifications you set, and character limits as well, if they are required.
I look forward to a favorable answer, and look forward to working with you.
Best regards,
Ranka Toku