PDF Expert (by Readdle) is widely considered the prettiest PDF editor on macOS. It is native, fast and feels like Apple made it.
Flint is browser-based. Here is the honest comparison for Mac users.
Where PDF Expert wins
Beautiful native UI on Mac and iPad. Excellent reading experience. Strong annotation. Offline by default. Subscription-based but cheaper than Acrobat.
Where Flint wins
Browser-based, so works on every device including ChromeOS and Windows. Day pass option. Sign-pdf, convert-pdf-to-word and redact-pdf are first-class.
Pricing compared
PDF Expert is around $79.99/year. Flint Pro is similar on annual and adds the day pass. For Mac-only users who want a permanent native app, PDF Expert is a clear pick. For cross-device or occasional users, Flint.
Best for…
PDF Expert for Mac and iPad power users who value native design. Flint for cross-device or occasional users.
FAQ
Is PDF Expert good on iPad?
Excellent. The iPad app is one of the best PDF apps anywhere.
Does Flint work on iPad?
Yes, in Safari or Chrome.
Which signs better?
Comparable. Flint's sign-pdf flow is faster across sessions.
Mac and iPad obsessive: PDF Expert. Browser-first cross-device: Flint.