Justin Smith

Building practical AI + data tools. Sharing what works, what breaks, and what I learn shipping side projects.

[Justin Smith @justinbuilds]

Hey all! I’m Justin 👋🏻

I build practical iOS + AI tools and share the real journey: the builds, the distractions, and the resets.

Currently shipping an iOS “focus guard” app — it locks my biggest distractions until I finish daily Bible reading, journaling, and study. No scrolling before what matters.

Builders, faith-driven creators, or anyone battling phone addiction — what’s your best system for staying intentional? Drop it below 👇

[Justin Smith @justinbuilds]

@buildwithsid Fine… https://t.co/EqdMReGxP3

[Justin Smith @justinbuilds]

@nexudotio Congrats!!! It’s been a great alternative to Claude Design and honestly not far off from what Anthropic offers

I love open source ❤️

[Justin Smith @justinbuilds]

@nexudotio Thanks!

[Justin Smith @justinbuilds]

@thsottiaux Amen.

Life is also short. Can’t forget there are many other important things in life to dedicate time to

[Justin Smith @justinbuilds]

@Ty_Trades_ @steipete Thanks for sharing @Ty_Trades_ !!

[Justin Smith @justinbuilds]

@jturntdev “You’re”

[Justin Smith @justinbuilds]

@kaaaash____ I live in “the south” in America so it’s only natural for me to have that as my backup. We country lol

Here’s to hoping I won’t need it as my backup until I actually want to

[Justin Smith @justinbuilds]

@HeyGen Well this is awesome 👏

[Justin Smith @justinbuilds]

https://t.co/3RuOxYfDK5

[Justin Smith @justinbuilds]

This is a game changer for me. No more leaving my MacBook unlocked in my office all day 🤯

[OpenAI Developers @OpenAIDevs]

Codex anywhere and everywhere, all the time.

Now your Mac doesn’t have to be unlocked for Codex to use your computer.

From your phone, Codex can securely use apps on your Mac, even when the screen is off and locked.

https://t.co/PCGK4i7FSF

[Justin Smith @justinbuilds]

Thank you @elonmusk

[Elon Musk @elonmusk]

The latest 𝕏 algorithm has been published to GitHub
https://t.co/ZCOm51uxmh

[Justin Smith @justinbuilds]

@aksheyd I also find it hard sometimes to know what is happening in the background and if things are progressing. Wish I had screenshots to share but currently do not.

I’m on Ghostty on Mac

[Justin Smith @justinbuilds]

@aksheyd The UX for me so far is a bit wonky. Mostly around continuous work where I need the agent to:

build -> verify with computer use -> fix -> repeat.

Maybe just a user error … I just got it spun up last night

[Justin Smith @justinbuilds]

It’s not trying to become Postgres, and that’s fine. The real value is DuckDB becoming a stronger, more flexible building block for modern analytical workloads — clearly moving past the “SQLite for analytics” label.

Official post here: https://t.co/1nrJ704gRR

Anyone spinning this up soon? Would be interested to hear how it goes.

[Justin Smith @justinbuilds]

🦆 DuckDB just released Quack, their new client-server protocol.

It’s a meaningful step forward. DuckDB isn’t just an embedded, in-process database anymore. You can now run it as a proper server that multiple processes can connect to, with concurrent reads and writes supported.

This opens up some genuinely useful patterns.

[Justin Smith @justinbuilds]

The numbers are impressive too:

> 60 million TPC-H lineitem rows transferred in under 5 seconds
> Small writes hitting about 5,500 transactions per second with up to 8 parallel threads