Flexibits does not mention a limit to the number of scans it will process, but the process should be more streamlined than using Adobe Scan. Of these features, scanning business cards with your iPhone and inviting people directly from Fantastical will be most useful.
Update: Cardhop 2.0 introduces several new features, including business-card scanning, widgets, organizational charts and a deeper integration with Fantastical.
Even better, Flexibits just introduced Cardhop 2.0, which is now part of the Flexibits Premium bundle ($40/yr.), and, potentially, the best CRM platform on the market today. Since then, two recent arrivals, Airtable and Streak, have eased the situation, although both are technically web-based solutions. Our past two updates in 20 lamented the fact that the Mac was weak in database management, specifically CRM-type solutions.