Hello,
I have seen your portal for Malaysia Welcomes You !!.
I have been in Malaysia several times to my brother's place.
I will develop this mobile applications for your portal.
Let's have chat in pm and will share you my complete portfolio.
Well, iOS app approval and rejection is purely based upon the iTunes App Store Guidelines.
Note : No developer can guarantee you that iOS app store will Approve your app.
But yes, if we follow the guideline then your app will get approved.
Thanks