Non-English speaking or just plain dumb?

The app itself works fairly well (more on that in a moment) but I wonder if the makers of this app are non English speaking or are they just unintelligent people with horrible grammar? Either way Id think twice about doing business with them.
Why wouldnt they take the time to make sure the ad copy for their app was written in proper English? Just have an American proof read it for them!
In business its very important to make sure spelling and grammar is correct because like it or not, your customers will judge you for it.

Here are some hilariously bad sentences from just the welcome page.

Secret Diary- made with love for the peace of your mind

Thank you for download Secret Diary

If you have any question or problem please feel free to contacting us

There are A LOT more grammatical errors than this. Almost every sentence sounds like a Russian speaking broken English.
To the app developers: please hire an American proof reader to look at this for you.

The app is pretty decent. Its colorful and and fun. The upgrades are all in app purchases but Im not going to give my money to a company that cant be bothered to speak proper English.

Middle-Age Snow Day about Secret Diary FREE Private Lock