InstaTip 1.4 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. InstaTip for Mac lies within Productivity Tools, more precisely Calculators. This free software for Mac OS X was originally developed by ChouTi.io.
From the developer:
InstaTip is a smart tip calculator and bill splitter for daily usage. This app is thoughtfully crafted to provide an intuitive UI to calculate the tip, round the total, and split with multiple people. The tool features bill text recognition for automatic tip calculation. Also, it calculates the tip based on the tax-excluded amount (before tax), to avoid the unfair tip suggestions shown on the bill.
You may want to check out more Mac applications, such as RubyCalc, PinholeCalc or InstaRate, which might be related to InstaTip.