Formerly indie developer Jason Weingardt, on Threads:
Some personal news: I’ve joined the team at Major League Baseball, and the Mosaic app has come with me. The last 3+ months have, without question, been the wildest of my life. I’m beyond thankful to MLB for the chance to help shape how fans experience baseball, and even more thankful to the community of fans around the world who tried Mosaic, filed bug reports and feature requests, and helped shape it along the way.
We believe Mosaic can be a valuable tool to help learn more about what fans want…. I will keep working on Mosaic as part of my job…. Most importantly: Mosaic is sticking around. Features may come and go, but my ask is that you continue to write in with your feedback about what you like, don’t like, and what you’d want to see in a baseball app. I’m excited for what’s next, and I hope you are too.
Mosaic is a baseball app that’s been in TestFlight for a few months. (Scroll back through Weingardt’s Threads history for details.) From the moment I saw it, I was dazzled—it’s a great iOS baseball app that uses all of Apple’s platform technologies to lay out live game data and show off other MLB features in ways that MLB’s own app just doesn’t. And it even integrated with MLB TV, so if you’re a subscriber to MLB’s premium video service, you can watch games via Mosaic, including in the most mind-blowing multiview I’ve seen.

I don’t want to lean too much into the current state of the official MLB app, but it used to be so cutting-edge and great that when I was at Macworld, we gave it a zillion awards and ended up just inducting it into our “app hall of fame.” But over the years, that app has become generic and unfocused and one-size-fits-all. It is no longer a joy to use.
So Jason Weingardt wrote Mosaic, by himself, and it’s a properly great iOS app (that also runs on iPad and Mac and, as of today, Apple TV). I ran into Weingardt at WWDC and he was so happy that people had already fallen in love with his own personal semi-secret passion project.
We all pretty much expected Mosaic to be crushed by MLB once it figured out what was going on. No matter that it was using public APIs and honoring MLB’s own premium content subscriptions, it just felt like the kind of thing that was too good to be true.
Instead, to their immense credit, MLB hired Weingardt, and Mosaic is now apparently a part of MLB’s digital strategy. I almost can’t believe it. It’s the best possible outcome for Weingardt, MLB, and baseball fans with Apple devices.
I’m so happy to think that MLB’s apps may now be on a trajectory to go back to where they belong—in the app hall of fame.
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