Bridging the Online-OTB Gap: I built a native Mac chess app for tournament prep.

Hello Chess.com Community!

If you’re a Mac user who has ever tried to transition from casual online play to serious Over-the-Board (OTB) tournaments, you know the struggle: the professional "gold standard" tools are almost exclusively Windows-based. You’re often left choosing between clunky browser tools or running slow Windows emulators.

I’ve spent the last few weeks building macbase—a native, local-first chess analysis studio designed specifically to bridge the gap between online ratings and OTB performance.

Why macbase for OTB Prep?
Online blitz is fun, but tournament chess is a different game. macbase helps you prepare for the "real" board:

Real OTB Data (TWIC Integration): Stop studying online "random" games. macbase imports thousands of real FIDE-rated tournament games every week via The Week in Chess (TWIC) integration.
Tournament Insights by Rating: See what openings actually win at your specific FIDE rating bracket (1600, 1800, 2000+ FIDE). Know what to expect before you sit down at the board.

Native & Fast: No Wine, no Parallels. It runs natively on Apple Silicon and Intel with the performance Mac users expect.
Local-First & Portable: Your repertoires, analysis, and flashcards are stored on your disk in standard PGN format. No cloud dependency, no subscriptions—your prep is yours to keep.
Open Core & Community Beta
We are following an Open Core model. The foundational engine is open source on GitHub because we believe in transparency for the chess community.

To kick things off, I’m inviting the first 100 users from the community to join our Pro Beta for free.

I’m looking for honest feedback from tournament players and Mac enthusiasts to help shape the next version.

Check out the project and claim your beta copy here: 🔗 joe-ging.github.io/macbase-app/ (Just copy-paste this into your browser!)

I’ll be hanging out in this thread to answer any questions about features, the tech stack, or OTB prep strategies!

Best,