Based on our record, Sheetsu should be more popular than Google forms to Notion. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Here is my product: https://matchkraft.com/. It is a marketing toolkit. I think you need to ask for feedback, asking why users don't want to pay for a premium subscription. So far, you are getting new users that is a good sign you are going to the right direction. Maybe, who is your ideal customer or maybe your product is ok but need more visibility (maybe paying ads). Try to get active users. I really want to... Source: almost 2 years ago
Calling a 3rd party API: There is a complete ecosystem providing "google-sheets-as-DB". I personally tested and recommend https://sheetson.com/ but there are a lot more with free tiers https://sheetsu.com/ https://sheety.co/. Source: about 3 years ago
Https://formtonotion.com/ - this is a Google Chrome add on. Source: almost 3 years ago
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Notion API - Connect Notion to the tools you use every day
Sheet 2 Site - Generate a website from 📗 Google Sheets
Sync2Sheets - Give Notion the superpowers of Google Sheets
SheetBest - Turn a Google SpreadSheet into a JSON Database API
Chilipepper - Create beautiful forms connected to your Notion pages