If those two clones didn't exist, do you think your app would be collecting "their" revenue (i.e. $500/year * 2)? Maybe you three are splitting a small pie into smaller slices.
Probably not in any meaningful way. The clones never seemed to grab much traction in the rankings, where my app did. Though I guess I'll never know for sure. If anything, I'm losing out to the real competition that took their own approaches to solving the problem and didn't just clone what I did.
Out of curiosity, I just had a look at the ones I do consider clones, and the one that took my name and added "Pro" to the end doesn't even appear to be on sale anymore though their website is still active. I can't find the other, so it may not be either.
Out of curiosity, I just had a look at the ones I do consider clones, and the one that took my name and added "Pro" to the end doesn't even appear to be on sale anymore though their website is still active. I can't find the other, so it may not be either.