My app – little piano (pro), normally priced 0.99$ was listed free for a day on Monday 19th December.
Thanks to all users who downloaded and provided their feedback.
Key learning – not to call ad free version of my app “(pro)” ever again. Using “(ads free)” would be much better and I will follow this naming convention for my next app – MazeBall which should be listed on Amazon soon (in review currently) with (ads free) option.