Very cool. Reading your "about" page, I think Brighten Labs and I had the same idea - make a free cashflow app to bring attention to other stuff we're doing. I made a similar web-app for almost the same purpose: <a href="http://cashflow.zetabee.com/" rel="nofollow">http://cashflow.zetabee.com/</a> (demo at: <a href="http://cashflow.zetabee.com/demo" rel="nofollow">http://cashflow.zetabee.com/demo</a>)<p>Type stuff up in an Excel-sheet like format and instantly see how it affects your future cash. I'd been using an Excel version of this CashFlow till earlier this year when I made it a web-app. The web-version enabled me to plan when to quit my job, when to start my side-biz, how much to spend on shopping/luxuries once I quit my job etc. If you are disciplined, you can definitely use a CashFlow tool to manage your personal finances a lot better than just following words of advice like "give up that $5/day Starbucks habit."<p>The real reason a CashFlow app is better for personal finances is because your salary is not the same every month. 26 paychecks / 12 months => 10 out of 12 months you make LESS than your average monthly salary. Also expenses like auto insurance could occur once every 6 months, garbage bills could be thrice a year, and water bill once every 45 days. Like the predator cycles that Magicicada tries to avoid ( <a href="http://en.wikipedia.org/wiki/Magicicada" rel="nofollow">http://en.wikipedia.org/wiki/Magicicada</a> ) if all of your big bills end up hitting you in the same month / pay period, you will be short on cash even if your spending hasn't changed. Or you may spend 10% extra in that month because the prior months you didn't feel a crunch and thought maybe you're doing well financially, so next month you can award yourself the iPad 3G.<p>For people who don't live on a fixed salary, a CashFlow tool can still be very helpful because you just put in your best-guess estimate of your monthly/weekly earnings instead of a fixed 2-week paycheck. Even if you have ample savings and never have to worry about spending $5k here or there, you can still use a cash forecasting tool to meet your future savings/investment goals.