Well, though I appreciate your honest detailed reply, I must point one major thing before answering your concerns:
Sales are great!
Thats good to hear, good for you
I completely agree, but I would say most people know their avg, highway, and city fuel economy due to high gas prices. Even if they don't, it's a very simple calculation you can do using your trip meter. On that note, how often do you switch between country road driving and motorway thrashing?
Maybe its an American thing, but in the UK I bet the vast majority of people have no idea of their cars potential MPG let alone what they are actually achieving. It is simple enough to fill up, empty the tank and then work out the MPG based on the amount of miles you went and the sizer of the fuel tank, but not many would do that. Maybe you could build in a reverse calculation to work out how many miles per gallon they should get, it could store the tank capacity in its database so they just have to enter the amount of miles they went once the tank is nearly empty. Just a suggestion.
As for how often I switch between motorways and country roads, pretty much daily, as I live 5 miles from a major motorway and 3 miles from the country, places I go to are either one way or the other. In a major city this isn't the case, but we don't all live in major cities.
Sure you can. Again, I believe most people know their MPG, and a fuel gauge is accurate enough to allow a ballpark figure to be calculated for distance.
Your belief may well be right, and as your sales are fantastic you probably are, if you are getting seriously rich from your application then you have done a great thing. I personally have never owned a car that had a fuel gauge that showed a true indication of my remaining fuel, all have however had fuel computers which have helped. Usually half full is a lot more or a lot less than half, quarter full is not accurate either. In fact my first car which cost me £70 probably had a more accurate fuel gauge than my current £35,000 car!
As I said, sales are great, and the app is mostly aimed at people who don't have a distance meter. If you have such a calculator, and don't feel compelled by any of the other reasons I have listed on the app page, there's no need to buy it. Would I buy a motorcycle helmet if I didn't ride? Of course not, but plenty of other people do ride and have them.
Oh I know there is no need to buy it, was just trying to offer some advice. Sadly too many developers feel they can churn out rubbish and make a few quid out of it, you have something that people want but do keep in mind that you can make it better and more useful. And it never hurts to have a crash helmet spare - you never know when you might need it!
Thanks again for your comment!
No problem
