What are /r/GooglePlayBooks' favorite Products & Services?

From 3.5 billion Reddit comments

The recipe that has always solved this problem for me is to use a free app called Calibre to:

• convert the epub to another format (e.g. azw3 or mobi)
• delete the original epub from the Calibre library
• convert the book, in the new format, back to epub

I've always done this using a desktop computer, but I see there is a version of Calibre for Android.

I believe the OP was talking about surveys via this app:

https://play.google.com/store/apps/details?id=com.google.android.apps.paidtasks

I use it in the US and get a few surveys a week.

Try calibre, it works perfectly for me when I do .cbr to .pdf

I loose no file size in the conversion, and the pdf looks great when viewed in Adobe Acrobat and when uploaded Google Play books.

If you are looking for EPUB metadata, it can do that aswell.