> custom presets for different countries
Can skip those, this is a uniquely American concern, in the rest of the world we just pay our bills and if there's something to split a generous approximation is what people do, and they leave something for the waiter if appropriate without needing a frigging calculator to do that.
> I discovered this tip calculator [...] I built tipcalculator.top
This is also a uniquely American thing where you can both discover something and then build it, or is it the other way round?
> struggling [...] when dining
This is also a uniquely American thing where you can't just marry someone but must plan every detail months in advance, where you can't just give birth to a child but must perform a gender reveal party, and, also, struggle when 'dining'. In the rest of the world people get married, have kids, and eat.
