Líder de Tecnología & CTO | +11 años construyendo software | Especialista en apps móviles, IA y la nube | Founder of @FlutterPeru & @Flutter_Ica
Lima, Peru
Joined October 2013
- Tweets18.2K
- Following1.3K
- Followers537
- Likes6.5K
Pierre Guillén 👨🏾💻 💙 retweeted
A la mierda! Qué emocionante csm!
Nunca una homilía de un sacerdote me había emocionado tanto.
Con humildad, con paciencia. Siempre solidarios y siempre agradecidos.
Pierre Guillén 👨🏾💻 💙 retweeted
Apple has lots of fancy high-level APIs that make building UI automagical
But when experimenting with new hardware, I always like to rebuild everything from scratch to really understand what the fundamental building blocks actually are
Probably an old habit from when I was a UI prototyper in Apple's Hardware org, and only had basic firmware to work with 😄
Pierre Guillén 👨🏾💻 💙 retweeted
LG just dropped a Flutter fork for webOS!
📺 Building for smart TVs is great, but TV app store reviews are notoriously slow.
Imagine bypassing those delays and pushing OTA updates directly to your TV apps with @shorebirddev.
Should we support webOS?
github.com/lg-flutter-webos/…
Pierre Guillén 👨🏾💻 💙 retweeted
Drafter is now on all three 🎉
📊 Compose · 🍎 SwiftUI · 💙 Flutter
27 chart types, smooth curves, gradient fills, reveal animations pure Canvas, zero deps, same API everywhere.
github.com/AndroidPoet/Draft…
pub.dev/packages/drafter
Pierre Guillén 👨🏾💻 💙 retweeted
Dear US government,
Since you've just blocked Fable and Mythos on critical national security grounds, here are some other tools that pose a similar threat to the American people:
- Microsoft Teams
- SAP
- Salesforce
- Jira
- Outlook
Please do what you must to save America 🇺🇸
‼️🚨 BREAKING: Amazon researchers snitched to the US government about jailbreaking Fable 5 and Mythos 5, forcing Anthropic to immediately shut down worldwide access.
A security export control directive from Commerce Secretary Howard Lutnick enforced the action.
Anthropic is fighting the directive and calls it a misunderstanding.
This isn't the first clash. The Trump administration had already tried to get Anthropic to pause the release of its latest models before this directive landed.
Pierre Guillén 👨🏾💻 💙 retweeted
Playing with a concept, and must say that multi-windows support on macOS in Flutter (master channel) got quite solid!
Pierre Guillén 👨🏾💻 💙 retweeted
Repeat with me: "Dart is simple solid and sound" ©® 🔥🎯
#Flutter #Flutterdev
Dart must easily be the most versatile computer language out there. 🎯
* Runs as a scripting language (like Python)
* Compiles to kernel code (like Java’s bytecode)
* Compiles to native code (like Swift)
* Compiles to JavaScript (like TypeScript)
* Compiles to WASM (unlike TypeScript)
* Has sound null safety (like Rust)
* Stateful hot reload (like no one else - Erlang maybe?)
* Runs on virtually any platform (like C/C++)
In addition:
* Has great developer tooling
* Interops easily with other languages
* Has an outstanding UI framework (Flutter)
* Nicely mixes with native UI components
* Is really easy to learn and work with
Today, I learned that the full compiler, analyzer, and tooling can even run on a web page. Mind blown. 🤯 What else did I miss?
Pierre Guillén 👨🏾💻 💙 retweeted
Dart must easily be the most versatile computer language out there. 🎯
* Runs as a scripting language (like Python)
* Compiles to kernel code (like Java’s bytecode)
* Compiles to native code (like Swift)
* Compiles to JavaScript (like TypeScript)
* Compiles to WASM (unlike TypeScript)
* Has sound null safety (like Rust)
* Stateful hot reload (like no one else - Erlang maybe?)
* Runs on virtually any platform (like C/C++)
In addition:
* Has great developer tooling
* Interops easily with other languages
* Has an outstanding UI framework (Flutter)
* Nicely mixes with native UI components
* Is really easy to learn and work with
Today, I learned that the full compiler, analyzer, and tooling can even run on a web page. Mind blown. 🤯 What else did I miss?
Pierre Guillén 👨🏾💻 💙 retweeted
We've gotten A LOT of questions about RN vs Flutter in the last few days, so here's some data:
#️⃣ 316K React Native apps and games
⬇️ 663M downloads in the last 30 days
💰 $436M (after fees) in the last 30 days
🕹️ ~6% of downloads and revenue came from games, the rest from apps.
#️⃣ 383K Flutter apps and games
⬇️ 631M downloads in the last 30 days
💰 $416M (after fees) in the last 30 days
🕹️8% of downloads and 29% of revenue came from games
Reply if you're curious about anything else.
Amazing to see Appfigures data featured on stage at Google I/O 2026.
Flutter is now the #2 most popular app development SDK across both the App Store and Google Play, according to our SDK Leaderboard.
It's great to see how our data provides insight into the future of mobile development at scale.
Pierre Guillén 👨🏾💻 💙 retweeted
10 years defending Android native development. 3 books published. Conference stages telling people cross-platform was compromise.
Then I tried Flutter from my Italian mountain town and everything I preached crumbled.
I used to think real developers wrote platform-specific code. Kotlin for Android, Swift for iOS. Anything else was for lazy devs who couldn't handle "real" programming.
Cuneo forced my hand. No iOS developers within 100 kilometers. My indie apps needed both platforms or they'd die.
First Flutter project, I expected pain. Clunky widgets, performance issues, the usual cross-platform disasters.
Instead I shipped StreakUp, a daily habit tracker, to both App Store and Play Store in half the time.
Then 3 Things, my focus app. Then AI Bedtime Stories, which reads custom stories to kids. Then six more apps.
Same codebase. Same performance. Same native feel.
All those conference talks about "platform purity" suddenly felt like religious arguments about programming languages from 2003.
The hardest part wasn't learning Dart or widget trees.
It was admitting I'd been wrong for a decade.
Now I ship faster than Android-only developers while reaching twice the audience.
Sometimes the best technical decisions happen when you stop caring about what other developers think.
What platform wars are you still fighting that don't matter anymore?
Pierre Guillén 👨🏾💻 💙 retweeted
If you still have doubts about Claude Mythos, here's what it did already:
> Found a 27-year-old OpenBSD bug in one of the most security-hardened operating systems on earth for <$50
> Broke into a production virtual machine monitor (basically the tech that keeps cloud workloads from seeing each other's data)
> Turned Firefox vulnerabilities into working exploits 181 times
> Found a 16-year-old FFmpeg bug that survived every fuzzer, every code audit, and every human reviewer since 2010
> Wrote a FreeBSD exploit that gives any unauthenticated attacker on the internet full root access. No human was involved after the first prompt.
> Chained 4 separate vulnerabilities together to build a browser exploit that escaped both the renderer and the OS sandbox
> Found critical holes in every major web browser and every major operating system
> Gave Anthropic engineers with zero security training a complete and working exploit by morning
> Cracked cryptography libraries protecting TLS, AES-GCM, and SSH
Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software.
It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans.
anthropic.com/glasswing
Pierre Guillén 👨🏾💻 💙 retweeted
Esto es magnífico. Significa que si declaro algo como:
<form action="/api/checkout" method="POST"
webmcp-tool="complete_purchase"
webmcp-description="Submits the final order with the items in the cart">
<input type="text" name="card_number"
webmcp-parameter="cardNumber"
webmcp-description="16-digit card number" />
<input type="text" name="expiry"
webmcp-parameter="expiryDate" />
<button type="submit"
webmcp-action="submit">Pay now</button>
</form>
El LLM ya no necesita tomar un screenshot para adivinar cómo funciona, si no que puede descubrir la funcionalidad declarativamente. Te ahorras fácil 80% de los tokens. Más rápido y más barato.
Pierre Guillén 👨🏾💻 💙 retweeted
We just published a case study with @1KOMMA5GRAD💜🎉
The Cleantech unicorn serving 120K+ households builds their custom Flutter design system with @widgetbook_io.
The results? Great Design & Dev alignment. Zero visual bugs shipped. 20% faster delivery.
Here's how they do it 🧵
Pierre Guillén 👨🏾💻 💙 retweeted
𝗡𝗔𝗩𝗜𝗗𝗔𝗗 𝗔 𝗣Ⓤ𝗥𝗔 𝗚𝗔𝗥𝗥𝗔 💪🎄
🎁 Solo por hoy y como regalo de Navidad, liberamos el contenido exclusivo de nuestro canal de YouTube para toda la hinchada crema.
💛 No dejes pasar la oportunidad de disfrutar estas fiestas con garra y pasión 👉 bit.ly/3YznC0g
#TricampeUnes
#UnTriConGarra
Que hermoso :')
💪 𝗘𝗡 𝗟𝗔 𝗔𝗟𝗧𝗨𝗥𝗔 𝗬 𝗘𝗡 𝗧𝗢𝗗𝗔𝗦 𝗣𝗔𝗥𝗧𝗘𝗦...
𝗬 𝗗𝗔𝗟𝗘 Ⓤ 𝗣𝗢𝗥 𝗦𝗜𝗘𝗠𝗣𝗥𝗘 𝗘𝗦𝗖𝗨𝗖𝗛𝗔𝗥𝗔́𝗡 💛
#TricampeUnes
#UnTriConGarra
Pierre Guillén 👨🏾💻 💙 retweeted
𝗘𝗦𝗧𝗘 𝗧𝗥𝗜𝗖𝗔𝗠𝗣𝗘𝗢𝗡𝗔𝗧𝗢 𝗧𝗔𝗠𝗕𝗜𝗘́𝗡 𝗟𝗟𝗘𝗩𝗔 𝗧Ⓤ 𝗡𝗢𝗠𝗕𝗥𝗘 🕊️
«Zapatito», siempre presente ♾️.
#TricampeUnes
#UnTriConGarra
Pierre Guillén 👨🏾💻 💙 retweeted
¿𝗖𝗢́𝗠𝗢 𝗗𝗜𝗝𝗜𝗦𝗧𝗘, «𝗖𝗔𝗣𝗜»? 😜
#TricampeUnes
#UnTriConGarra