Yeah I believe modern trigonometry and the terms sine and cos also trace their origins to Sanskrit through Arabic. It's a shame that ancient/medieval India contributed so much to science and math but hasn't been able to innovate in centuries past :(
hey there, I spent some time working on something very similar, but I am based in the US! I was able to import receipts from Safeway & Costco here, using private APIs. But since stores here don't really support OAuth, and using a private API may not be the best long term approach, I paused my effort. I would love to chat if you are interested. I used react to build a prototype.
I am working on an app to track grocery purchases from online receipts. My goal is to track the effects of inflation on prices, and build something like Mint, but with itemized transactions from receipts.