I've said this, or variations of this thing a few times in the past, so I'll try to be brief here.<p>Mainly, MVP is an overused term. An MVP <i>should</i> mean "a completely barebones product that solves a problem to test the market." Time tracking is a proven market, and it's no mystery that you can make money in the time tracking market. There are probably hundreds of companies doing exactly that.<p><i>Your</i> MVP should then be to test what you <i>are doing differently</i> in that market to see how people respond to it. If you were, for example, tracking time through a Tweet-like-system (like IDidWork.com, for example), then build the barebones system that does that and see how people respond. If you can get them to sign up and keep using it, you know you have a winner.<p>If you have a winner, then you need to progress beyond MVP as quickly as possible, and into a more fleshed out project. Add the other features that you think are necessary to the goal, but only if they're absolutely needed. Figure out what users are asking for, or if they're leaving, find out why. If they're staying, find out why. Respond to that feedback, but be careful of taking everybody at their word -- look for kernels of commonality in the feedback that speak to a bigger truth than what people are actually saying and try to implement.<p>Add polish. Add all the polish. Make your product inviting, enticing, attractive, gorgeous if you can manage it.<p>Figure out what use cases your product excels at (based on user feedback) -- target THAT. If your product is better at tracking time spent on customer work than say, other products who are better at tracking time spent for the same project or company, accentuate that. Everybody has a need, and if you have a number of users for which you are solving that need, then play it up and find more.<p>Then, charge. Figure out the relative value you add. Split-test pricing. Read books on pricing. You might ask your users what they would be willing to pay for this service, but that comes with risks too.<p>Profit.