Hello, this is Ann. I am a business coach for small entrepreneurs with a lot of experience in business.

About your question, I would love to make some suggestions. Scannable or Evernote are developed for this purpose. They are created by verified provider, so you don't have to worry about the quality.
In addition, if you want to have a variety of choice, you can log on AppStore and simply search the phrase "scannable pdf".

If you have any other question related to business tools or strategies, please remember that Ann is here.

Have a nice day!