It's very rare you're going to come up with a never been done before idea and even if you do it can probably be quickly copied so you'd be back where you starte

It's very rare you're going to come up with a never been done before idea and even if you do it can probably be quickly copied so you'd be back where you started. Get to know your competition and draw up a table on their pros and cons, and pricing. You may be able to find a niche that hasn't been explored e.g. different target audience, easier to use or more advanced, different platform, alternative pricing, different API, better integrations.