I’m cooking something… 🍳

If you’re curious, follow me and stay tuned! 👀✨

#WWDC #WWDC26 #WWDCHistory #Apple #AppleEvent #DubDub

I'm slowly getting ready for #WWDC26. There are still so many things, so many topics...

We still have 52 days left! 🥳 🚀

We are constantly learning, which is why we are progressing with each new milestone! 😉

My portfolio just got another app! 😎

#ZarazJade is a serious project now. The #refactor was meant to give it scalability. When I published it first time in 2018, it was supposed to be only for Warsaw. 🏙️

Today, it can cover the whole world! 🌍

#BuildInPublic #DevDiary #iOS

Today we celebrated the 13th birthday of @MobileWarsaw! 🥳🎉🎂

What can I say... The best crew, the best community, and the best meet-up ever! 🚀

Thanks #Apple! 🥳

I'm thrilled I can join you for the special event at Apple Park. Can't wait for more updates and details! 🚀

Just 56 days to go until #WWDC26! 🎉

#WWDC #ApplePark #AppleEvent #SwiftStudentChallenge #iOS27 #macOS27 #DubDub

Today, I successfully completed another item on my ToDo list! 🚀

I receive notifications directly on my phone. There are channels, source processing, and information provision capabilities on the phone. 📱

Now, it’s time to focus on subscriptions! 🐈 ✉️

My claude.md files are slowly degrading.

At the beginning, I put a lot of effort into describing the entire environment. Then I add updates with the help of an agent, until eventually I just stop caring about what’s in these files.

Some automation would be useful.

I have a terribly difficult nut to crack... 🥜

I track the refactor’s progress in a dedicated MD file. It contains a complete business description of the old project and a checklist of everything I’m transferring to the new code. 👨‍💻

Using the saved SHA of the last commit, I can verify the current state of the work. ✅

I think I’ve set myself a deadline for the #ZarazJade refactor.

Beginning of May, I want to be ready for a new update that will become version 4.0. Keep your fingers crossed!

#DevDiary #BuildInPublic #Transport #GTFS

#ZarazJade needs data, very accurate data. 🚌

Last days, I’ve been improving TransitCLI, which is responsible for data synchronization. Of course, I use #GTFS, but I’ve built my own model.

What’s the result? I want to deliver features no other #transport app has!
#BuildInPublic

That’s why RAM is expensive… I asked #claude to research the current DB for some interesting facts about #transport. 🤪

It has great potential, like the last feature with @flighty.

I currently operate on only a few lines but I wonder what will happen with the complete base. 🚀

My /database #skill is simple: it lets #Claude inspect the DB schema and select a specific query. 🔎

The goal was to separate the access from the #agent. Even in a development environment, I want full control over data writes. 🗃️

#LLMs make many tasks simple. ✨

#BuildInPublic

I gave the #agent access to my DB. Of course, I did it safely but before that... 👨‍💻

#LLMs are amazing, you have to admit it. I asked @claudeai about the nearest departures from a given stop and got an answer. 🚀

So why make an app? For plenty of other reasons! 🤪
#BuildInPublic

GitHub - wwdc/2026: Student submissions for the WWDC 2026 - Swift Student Challenge Student submissions for the WWDC 2026 - Swift Student Challenge - wwdc/2026

Don't wait, add your submission to WWDC/2026!

#Apple #AppleEvent #WWDC #WWDC26 #SwiftStudentChallenge #AppleScholarship

github.com/wwdc/2026

Once, I was waiting for another start in #SwiftStudentChallenge. Now I’m watching it from a completely different perspective.

The memories remain but it’s someone else’s turn and... I’m still part of it.

A good word, a kind gesture, and genuine excitement for someone’s success!

GitHub - wwdc/2026: Student submissions for the WWDC 2026 - Swift Student Challenge Student submissions for the WWDC 2026 - Swift Student Challenge - wwdc/2026

Congrats to everyone who took on the #SwiftStudentChallenge! 🥳

Although winning is sweet, what counts above all is the road - the friendships, the experience gained and the desires with which we build the world.

Don't wait, let yourself be noticed! 🚀
➡️github.com/wwdc/2026
x.com/AppleEDU/st...

I don't encourage you to read this code, but you can see the difference. 😉

The code width is probably the most striking part. It turns out optimization also means writing lean code that doesn’t take up a huge number of the screen inches. 🥸

Now, user interface!

#BuildInPublic

It almost worked... ⚙️

It’s true that I like to refine the UI myself. My prompts focus more on logic and domain - so I can jump straight into what I enjoy most. 👨‍🎨

Out of curiosity, I’ll compare the old algorithm with the new one.

#BuildInPublic

Next, the routing #algorithm. 🚏

Fun fact about #AgenticCoding: even if you know #Swift, sometimes it’s more natural to say what you want - even by describing specific language keywords. 👨‍💻

Let’s see whether the new implementation is better than the old one. 🌿

#BuildInPublic

It's been a long time since I wrote about what's new in the #ZarazJade architecture. I've been using CoordinatorView for a while now - it loads registered coordinators. 🗺️

A payload can pass module-specific details using keys defined in the Common module. 📦

#BuildInPublic

A smartphone displays a map with routes and public transport options next to a laptop, suggesting navigation or travel planning.

The first result is ready.

#Claude fantasized a bit on the frontend but the backend works good. Now it’s my turn. 😊

Working across various tech stacks with a solid claude.md gives great output. #Agent follows local arch and builds global logic. 🚀

#BuildInPublic

Recently, my #DevDiary about #ZarazJade has appeared less regularly, so I’ll try to post more consistently.

Today working on line details and elaborating on the old code with #Claude. I’m working in one dir with backend, frontend, and legacy all at the same time.

#BuildInPublic

Piotrek Jeremicz (@jeremicz.com) For the second year in a row, I’m writing my annual goals after the end of #WWDC. 🚀 June is primarily a motivating season: a period of news in the #iOS world, but also a chance to reflect on what’s been done. ☑️ Let’s do a self-check, 3 months before #AppleEvent! 🥳 https://bsky.app/profile/jeremicz.com/post/3lrpq45ecac2f

I have an amazing feeling about today’s summary! 🥳

We can start counting down: 76 days to #WWDC26! That gives me 11 weeks left to finish what I’ve been working on for the past year. 🚀

Super excited! #DubDub! 🎉

Hope to see you there, where everything will happen! 🫡

#Apple
bsky.app/profile/jer...

WWDC26: June 8-12, 2026 - Latest News - Apple Developer Join the worldwide developer community online for a week of technology, creativity, and community.Be there for the reveal of the latest Apple tools, frameworks, and features. Learn to elevate your apps and games through video sessions hosted by Apple engineers and designers. Engage with Apple experts in labs and connect with the worldwide developer community. All online and free.Learn more about WWDC26 >

Dub dub! 🥳

#WWDC26 #AppleEvent

developer.apple.com/news/?id=yi...

Beyond goals, there are dreams. 💫

I’ve got a standout idea for a #VisionPro app - one that plays to what this device does best for a specific niche. 👓

And also: #WWDC26 - I would love to go! 🥹 Fingers crossed. 🤞

Now I have to work to make these dreams come true! 💪

5.Be a part of the product I believe in

I am proud of the projects I participate in! That little typo I made almost a year ago Was Real! 🤳

Development is my passion, I can't imagine doing anything else. That’s why I want to be better and give even more! 🔥🎸

4. Launch a full-fledged SaaS project

Surprisingly, the old project #ZarazJade is becoming a large #SaaS environment. 📑

The architectural refactor unlocked many ideas that weren’t within my reach before. #ArgenticCoding speeds up work and opens new possibilities I will use! 🤖

3. Hit $500 MRR

This goal is shifting a bit. I don’t have enough time or knowledge right now to sell even a good product. #IndieDev is hard work, and the great stories are only written later. 💸

I underestimated it, so now I want to learn. #ASO should come first, next promo. 📺