Your data is 100% private.
Your purchase history is not uploaded to our central servers, nor does Nozama attempt to retain your data in any way.
Your CSV import persists within your browser by way of localStorage.
We do 3rd party tracking with Google Analytics and we load images from Amazon, but presumably, they already know what you've purchased from them.
No Hidden Tricks
Nozama makes its money as an Amazon Affiliate.
Any time you click on a product or service listed on Nozama, a tracking code identifies us as the source and gives us a percentage of your future purchases depending on various conditions.
Feel free to take a look at the Nozama source code.
PRs are always welcome!