Ridiculously quick tip calculator

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I don’t get tip calculators. Who can’t work out 20% of a sum in their head?
Ben Tossell@bentossell · Services for startups
@cenk or calculator on your phone? or ask siri...
Alex Gorischek
Alex GorischekHunter@alexgorischek · Technologist @ Textile Creative Studios
@bentossell @cenk Indeed, when I'm sober I just do tip in my head. It's after a couple drinks that I really start doubting my math abilities. I've typically used the iOS calculator for this, but I found myself wishing it weren't so obvious that I needed a calculator to to simple algebra—especially on a date. My goal was to make something that's faster and more discreet.
Ben Tossell@bentossell · Services for startups
@alexgorischek "when I'm sober" haha love it. It's more of a US thing with the whole tipping stuff and I always ask my teammates what's the norm everywhere. In the uk we just pay the bill and chuck in whatever
Claude Sutterlin
Claude Sutterlin@claudesutterlin · Owner, Coffee Bean Studios LLC
@cenk Even for a child it's easy to teach a trick: multiply the number by 2, and shift the decimal point to the left. $20*2=$40.00, move it left one for $4.
Maxim Ananov
Maxim Ananov@pointum · Distraction Dimmer • HazeOver.com
Why bother with cents? I'd go a step further and provide results that are closer to what you'd actually pay in cash. Like round the tip and/or result to denominations or integers that make sense (within certain percentage).
Rustin Rassoli
Rustin Rassoli@rustinrassoli · 16 Year Old Founder & CEO, Greetale
@pointum good point!
Ryan J A Murphy
Ryan J A Murphy@ryanjamurphy · Student?
Well-timed with the news that we might have to tip Uber now! (http://www.theverge.com/2016/4/2...)
Andrew Mutavdzija
Andrew Mutavdzija@andym_dc · JD
Sometimes you want to tip more or less than 20%, I suppose? I don't get the need for an app when there's already a calculator on the phone.
Kenny@topcities · Entrepreneur
Life should be simple, free of misleading nonsense. The whole tipping culture should just die. Tax and tips should just be included in pricing. While we're at it this whole 99-cent nonsense should go away too.
Alex Gorischek
Alex GorischekHunter@alexgorischek · Technologist @ Textile Creative Studios
@topcities Honestly, can't say I disagree. A brewery just opened near me called Optimism, and they refuse tips, which I love. Unfortunately, until tipping goes away...