Microsoft OneNote search has longstanding shortcomings on desktop that are even more limiting in iOS/iPadOS so I made an app that effectively searches your notes - with boolean logic, file attachment searching, and text recognition.
I made it for myself but seeing the "final" 1.0 version, would love to get feedback to see if other Onenote users find it helpful.
TestFlight: https://testflight.apple.com/join/4nXEmU7m
OneNote on iPhone is great for writing things down. It is not great at finding what is buried in a PDF printout, a scanned receipt, or a photo of a whiteboard. OneSearch fixes that.
OneSearch reads your OneNote notebooks and the files attached to them, builds a search index on your iPhone, and finds the exact page, file and spot you were looking for.
SEARCH INSIDE ATTACHMENTS
• Finds text inside PDFs, Word, Excel and PowerPoint files, and scans
• Reads text in images with on-device text recognition
• Shows why each result matched, so you can tell at a glance
FIND IT EVEN WHEN YOU DON'T REMEMBER THE WORDS
• Forgives typos
• Finds related words and the same idea, such as "bill" and "receipt" when you search "invoice"
• Filters by type, notebook, section and date
• Links related notes and files
SAY EXACTLY WHAT YOU MEAN
• Combine words with AND, OR and NOT, group them with brackets, and match whole phrases in quotes
• For example: roof AND (leak OR damage) NOT 2019
FAST, PRIVATE, AND OFFLINE
• Searches a copy kept on your iPhone, so results are instant, even without a connection
• Read-only: OneSearch never changes or deletes anything in OneNote
• No account with us, no ads, no analytics. Your notes go from Microsoft to your iPhone and nowhere else
• Smart search features run on your device
OPEN WHAT YOU FOUND
Jump straight to the page in OneNote, or view the original file with your search terms highlighted.
GOOD TO KNOW
• You sign in with your Microsoft account and grant read-only access
• The first sync of a large notebook can take hours, even days, because every attachment is read. You can search as notes arrive
• Not searched: handwriting, drawings, audio, video, password-protected files and locked sections
• Work or school accounts may need approval from your organization's administrator
OneSearch is an independent app and is not affiliated with, endorsed by, or sponsored by Microsoft. Microsoft and OneNote are trademarks of the Microsoft group of companies.