- in your embed code snippet, you have `There was some porblem uploading the sheet` -> the word "problem" is misspelled
- the embed code includes https://js.csvbox.io/script.js which has two console.log debugging calls which could be removed in production
- when adding columns to a new sheet, it would be neat to be able to paste the header line from a CSV file and for the columns to be created (this wouldn't help with the Column Type or Required options, but at least the Column Name would be set/wouldn't have to be typed one by one)
- also, when adding columns, it would be great to press the enter key after typing a Column Name to save/close the modal
I agree with most other commenters' feedback re: pricing, especially https://news.ycombinator.com/item?id=27133717 i.e. making the Sandbox much more generous. I was surprised to see only 5 rows imported initially, and thought it was a bug on your side (i.e. I thought only the first 5 rows were parsed)
Congrats on the launch!