[jakehilborn]

It's meant to be informational. I left out achievements, leaderboards, and flashy lights/noises so that I wouldn't encourage speeding. You'll find that for almost all driving scenarios that you save very insignificant amounts of time by speeding. Furthermore, based on my low daily active user count I'd conclude that Speedr isn't making speeding all that fun.

[dsacco]

I like your app. That said, the landing page's example of 10 minutes saved on a <120 minute drive (~11%) by going only 7mph faster sort of undermines the point that you don't save much time by speeding, especially if that 7mph faster barely brings you above 70mph in absolute terms.

I can agree with the observation that speeding only saves you insignificant amounts of time if your total commute time or absolute speed are rather low. But once you're driving anywhere for an hour or more and at speeds above, say, 60mph or so, it appears to be more up to interpretation about what "significant" means.

I wouldn't be surprised at all if people who are already inclined to speed were encouraged to do even more by your app, though I suspect there'd be a sampling bias in that those people might not download it in the first place.

[FatAmericanDev]

Speeding is not about saving time. It's about excitement and adrenaline...

[smt88]

That might be how you feel, but I have many often-late friends who speed only to save time.