2025-03-13 UPDATE: For less work and an almost-as-good fit, stop reading and buy the Globular Cluster CMA1.

2024-02-09 UPDATE: It works! Photo here

As I mentioned in my review podcast, the two straps that ship with the $3500 Apple Vision Pro are god-awful and mediocre, respectively.

If you just spent that much money on this thing, do yourself a favor and buy two more things:

1. A BOBOVR M2 Plus strap

2. This 3D-printed conversion kit for connecting it to Vision Pro (you can also print it yourself)

And boom: for under $50 you'll have a comfortable way to actually use the Vision Pro. Shame on Apple for dropping the ball so badly in the name of aesthetics (what happened to, "design is how it works"?), but hat tip to Mark Miranda for pointing me to this Etsy listing.

I have somehow been using Ruby on Rails since 2005 and have never worked on an app that needed to think seriously about web request caching, probably because of my proclivity to reach for static site generators and simple asset hosting whenever anything I make will be public-facing. But the current app I'm working on is actually mostly accessible without requiring users be logged in, which means it will both (1) run the risk of having bursts of hard-to-anticipate traffic to certain pages and (2) render pretty much the exact same markup for everyone.

I'll start with the results. Here's a mostly-empty, public-facing page my basic Heroku dyno without caching:

Completed 200 OK in 281ms (Views: 201.9ms | ActiveRecord: 47.5ms | Allocations: 37082)

And now with a few lines of caching setup:

Completed 200 OK in 9ms (Views: 3.5ms | ActiveRecord: 1.6ms | Allocations: 2736)

So over 30 times faster. And that's on a very basic page. Once the site is primed with content it'll probably be even more dramatic.

Here's how to do it.

What happens next will shock you…

This'll be an insta-purchase for me before it can get yanked from the App Store:

Juno delivers a fully native visionOS UI that taps into YouTube's embed API, which is designed to allow videos to be embedded in external webpages. When you want to browse YouTube's video catalog, Juno pulls up a tweaked version of the YouTube website. Apparently, the app is even clever enough to not show ads for YouTube Premium subscribers, though it remains to be seen how Google feels about a third-party developer being in control of an app for one of its biggest services on a new piece of hardware. Selig notes that he didn't use any private/internal APIs to develop the app.

I'm not one to kink shame, but it's starting to feel like this guy's fetish is building businesses whose survival depends on the mercy of hostile platform holders.

Apple PR:

More than 600 apps and games designed to take advantage of the unique and powerful capabilities of Apple Vision Pro will be available this Friday, February 2.

For context, iPad launched with just shy of 5000 apps in its App Store, and that number nearly doubled to 10,000 within a couple months.

Real beaut of a lede in the WSJ (News+ link) today:

Meta Platforms is hoping Apple's launch of the Vision Pro can reinvigorate its $50 billion metaverse effort, which consumers have yet to widely embrace.

Love the optimism here, but I wouldn't be surprised if this ages about as well as the CEO of Palm's, "PC guys are not going to just figure this out," quote prior to the iPhone's launch.

Update: this take by Kristopher Browne on Mastodon raises a great point:

I believe them. Goggles are the last device category where Apple didn't have designs for others to crib from. It's a space like "smart phones" were in before the iPhone, when android was going to be a blackberry clone because it's not like google knew how to design a device or interface.

I almost forgot about this mess. I guess the analogy really holds: just like Google had no clue that touch metaphors like "pinch-to-zoom" were going to be the breakthrough interface paradigm for smartphones, Meta (as indicated in this WSJ article) wasn't seriously chasing down mixed-reality computing of the sort implemented in visionOS until after WWDC.