Niche index
App Store niches worth a look
Terms where Apple reports high search demand and no single company holds more than three of the top 10. Thinnest fields first. That makes a term worth a look, not open — each one’s own page says whether its top 10 is thin or already established. No invented score: every number here is one you can check on the App Store.
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- BusinessHigh demandLightest third10 different developerspdf reader6.8K median ratings·3 charting·10 companies
Smallest in the top 5: 413 ratings at #4 (PDF Reader : Document Reader)
Top apps:
Acrobat Reader: PDF Editor
PDF Reader & PDF Editor
PocketBook Reader - BusinessHigh demand10 different developersinvoice maker32K median ratings·6 charting·10 companies
Smallest in the top 5: 1 rating at #1 (Invoice Maker ．)
Top apps:
Invoice Maker ．
Invoice Maker ▸ Estimate App
Invoice Maker ▸ Invoice Simple - BusinessHigh demand10 different developersjob search119.9K median ratings·8 charting·10 companies
Smallest in the top 5: 86,263 ratings at #5 (Monster Job Search)
Top apps:
ZipRecruiter Job Search
Snagajob - Jobs Hiring Now
Indeed Job Search - BusinessHigh demand10 different developersdocument scanner162.6K median ratings·6 charting·10 companies
Smallest in the top 5: 74,575 ratings at #1 (Scanner App. JPG, Photo to PDF)
Top apps:
Scanner App. JPG, Photo to PDF
CamScanner - PDF Scanner App
Adobe Scan: PDF & Doc Scanner
A term dropping off this list is not “solved” — a company entering with 4 or more of the top 10, or demand falling out of the top two bands, moves it below the bar. Nothing here predicts which comes next.