This idea is really pretty simple, and I can't believe that I haven't been able to find something like this yet.
Notebook, financial management, schedule, diary and personal assistant apps already exist, but none of them is really equipped to help you organize thoughts and ideas.
The app simply needs to be able to accept a number of inputs: Notes, voice recordings, photos, videos and links.
Every time you add information it should prompt you to categorize or label it. The available categories will be customizable, but I imagine them including things like "work", "admin", "groceries", "family", "project 1", "ideas" and similar themes.
If a thought occurs to a user he/she simply records it and categorizes it appropriately.
You can then go back later and revisit the thoughts according to the category they are stored in, and the app could even compile summaries of the day's thoughts that you can check in the evening to make sure you got to everything and allow you to ponder some of the thoughts as you go to sleep.
I realize the idea is pretty much a diary or reminder, but I have yet to find one that allows you categorize thoughts easily, rather, they tend to store thoughts chronologically. On a notepad, you might create a note for a category and ideas to it, but I have not found any notepad that allows anything other than text input. .
Currently, I have a whatsapp group with no other members, so I can send links and photos and messages to myself. This works, but the information is also only organized by date. It would be nice to separate the ideas.to