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This is the space where I usually try an AI tool. This week, though, I'm featuring an experience shared by a Tech Memo reader who got in touch after last week's installment about AI coding services such as Replit, Cursor, and Bolt.new.

This person worked at Google for more than two decades, so they know their software! They recently tried out Replit, following Google CEO Sundar Pichai saying he's been messing around with this tool.

"Like Sundar, I've also tried Replit to test out a cat purring app I had (lol). I poked around on some other options, but I liked Replit because it took the query and really built an app for you (even on the free test version). So based on a query alone and answering some questions (e.g., do you want people to be able to log in and save their cat?), you had an app. And it would work! You could launch it if you were really interested and happy with it.

"The limitations came with fine-tuning the app from there, as it seemed to get confused (and use up your credits) if you asked it for changes, e.g., change how the cat looked. It also was a pretty rough product; ultimately, if you wanted more than a proof of concept, you'd probably want to delve into the software code and change things yourself versus relying on queries.

"Over time, I think they'll fine-tune these things and I love how it makes it easy to prototype ideas. It really lowers the upfront cost of testing ideas."

Thank you, dear reader, for getting in touch. I have also been messing around with an AI coding tool. I chose Bolt.new, partly because I recently met the cofounder of the startup behind this service, Stackblitz's Eric Simons (another Tech Memo reader, btw). Next week, I'll share some thoughts about Bolt. I've been building something with my daughter Tessa and we can't wait to show you!

• This post originally appeared in the BI Tech Memo newsletter.
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WWDC was a bit of a bust. Apple's Liquid Glass design overhaul was criticized on social media because it makes some iPhone notifications hard to read. A few jokers on X even shared a screenshot of YouTube's play button obstructing the "Gl" in a thumbnail for an Apple Liquid Glass promo. Need I say more?

The more serious question hanging over this year's WWDC was not answered. When will Siri get the AI upgrade it desperately needs? Software chief Craig Federighi delivered the bad news: It's still not ready. That knocked roughly $75 billion off Apple's market value. The stock recovered a bit, but it's still badly lagging behind rivals this month.

Google, OpenAI, and other tech companies are launching powerful new AI models and products at a breakneck pace. Apple is running out of time to prove it's a real player in this important field. Analyst Dan Ives is usually bullish, but even he's concerned. "They have a tight window to figure this out," Ives wrote, after calling this year's WWDC a "yawner."

AI is complex, expensive, and takes a long time to get right. Apple was late to start building the needed foundational technology, such as data centers, training data pipelines, and homegrown AI chips. By contrast, Google began laying its AI groundwork decades ago. It bought DeepMind in 2014, and this AI lab shapes Google's models in profound ways today.

When I was at Google I/O last month, one or two insiders whispered a phrase. They cautiously described an "intelligence gap" that could open up between the iPhone and other smartphones. Many Android phones already feature Google's Gemini chatbot, which is far more capable than Siri. If Apple's AI upgrade takes too long, this intelligence gap could widen so much that some iPhone users might consider switching.

At I/O, these insiders only whispered this idea. That's because it will take something pretty dramatic to get people to give up their iPhones. This device has become a utility that we can't live without — even for the few days (weeks?) it might take to get used to an Android replacement.

Still, if Apple doesn't get its AI house in order soon, this intelligence gap will keep growing, and things could get really siri-ous.