Where to sell it: Twitter. Just make sure the UI is nice and clean, and it works. 2 million downloads is a good vanity metric to sell on. Selling price is any

Where to sell it: Twitter. Just make sure the UI is nice and clean, and it works. 2 million downloads is a good vanity metric to sell on. Selling price is anyone's guess. Just make up a number and don't make it public. Tell it to each buyer individually and test their reactions. That way you can gauge what other's perception of pricing for it.