Will my app be rejected by Apple if I ask user for a 5 star and positive review comment after I will award them my In-App for free?

Solution 1:

See Apple Review Guidelines - 3.2.2 Unacceptable:

• (vi) Apps should allow a user to get what they’ve paid for without performing additional tasks, such as posting on social media, uploading contacts, checking in to the app a certain number of times, etc. Apps should not require users to rate the app, review the app, watch videos, download other apps, tap on advertisements, or take other similar actions in order to access functionality, content, use the app, or receive monetary or other compensation, including but not limited to gift cards and codes.
• ...
• (ix) Apps must not force users to rate the app, review the app, download other apps, or perform other similar actions in order to access functionality, content, or use of the app.

The behaviour described feels against the intent of the above guidelines, but only Apple's reviewers can authoritatively answer this question. Contact Apple directly, they may be able to provide further clarity.