Keep is my favorite Google product. It opens instantly on iOS, makes it dead easy to create notes, and has a good search feature. It's easy to access on the web since I'm always logged into my Google account anyway. I find iCloud's web presence a bit finicky b/c I have to usually log in again every time.
A wishlist for Keep:
* An API. I'd love to use Keep as a durable data store for all my notes. I want o be able to dump snippets collected from a Chrome extension or a PDF reader in there. Their current API provides just a few enterprise access knobs, and not the full data-plane API I'm asking for.
* A better search in the sidebar companion app they have for Gmail, Calendar, etc. For some reason, search in the Keep sidebar doesn't return the same results as with the main Keep web or iOS apps.
Sometimes a product is enough as it is, and man does the modern software world have a problem with recognizing that.