In App Purchase? Should be illegal.

I own this app. I have to agree with another reviewer about charging more for in app purchase of more symbols. If you wish to charge $1.99 for new buyers instead of $ 0.99 feel free, but once an app is purchased upgrades should be free like all the other developers, many who have had major upgrades. That is why the two star rating, which I have never given an app before. Make upgrades free for prior purchasers of your app like all other developers and this rating will go up.

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