[vegasje]

Have you played with this number at all? 10 phrases per day seems awfully low in my mind. If I was to download this extension, I would want to use it for a day or two before paying for an upgrade. I imagine you hit 10 phrases quite quickly, and this might turn some people off of the product before they fall in love.

[steveridout]

You could be right. It used to be 20 for free, but I lowered it so that more people would actually hit the limit and get the "Go Premium" message. It's hard to know what the optimal number should be. For a while I had a split test running where some users had 5, some 10, and some 20 per day. But there weren't enough users to see a significant difference in conversions.

[appleflaxen]

I think the sweet spot is probably closer to 100... you want people to see how great it is when they use it a lot.