We're a custom software studio that delivers end-to-end solutions for various industries. Experts in #Flutter #DotNet #React and a part of #FlutterCommunity.

Warsaw, Poland
Joined August 2019
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While getting ready for the next edition of #FlutterTechSummit, we needed to check: How long would it take to get our FTS Flutter app ready for iPhone Duo? πŸ‘€ Turns out: only 1 day. ✨ #FlutterDev #iPhoneDuo
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Replying to @patrol_leancode
정말 ν›Œλ₯­ν•΄μš”πŸ˜Ž
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What if every mobile release could be an experiment-not a gamble? πŸš€ At Nubank, feature flags help teams separate deployment from release, test ideas safely, and make rollout decisions based on real-world data.πŸ’œ Rafael Lisboa shares how they do it with Flutter. πŸŽ₯youtube.com/watch?v=kqm0AOdc… #FlutterDev #FeatureFlag #FlutterTechSummit
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Patrol has 600K downloads a month! 🀯 We started building this #opensource framework for agentic #E2Etesting for Flutter back in 2022 - and watching more and more Devs and QAs trust and use it every month means a lot to us. Thank you to everyone using Patrol, contributing, sharing it, and spreading the word. πŸ’™
600k!!! Patrol's monthly download count is now TWICE as big as 3 months ago. It's on track to hit 20 TRILLION monthly downloads by 2032 😱😱😱
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Replying to @patrol_leancode
Wow! Team, we need to celebrate! πŸŽ‰πŸ₯³
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Flutter was missing from the SAP ecosystem. Not anymore! πŸš€ Watch @Fiolek_'s talk about this solution: πŸŽ₯ youtube.com/watch?v=8ajQkfLh… SAP powers the core processes of many enterprises, but its standard workflows rarely fit exactly how teams work. Custom apps can adapt #SAP to specific business needs, yet building them has traditionally been slow and complex. We bring SAP integration to Flutter. πŸ’™ #FlutterDev #EnterpriseSoftware
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We love tech experiments! So cool 😎
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LeanCode πŸ’™ retweeted
I ran @LeanCodePl Marionette with @typesafeai Jev. One sentence: "win the game." A Flutter game it had never seen. 5 puzzles, rules only on screen. It read the code, flipped the right switches, tapped blue, red, green. 🀯 9.7 s. $0.0012. ⚑ No LLM involved. Marionette reads the widget tree and taps, Jev decides 🧡
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9,000+ km to give a Flutter talk! ✈️🌎 Our Senior Flutter Dev, @PRogulskiDev, is heading all the way to CancΓΊn, Mexico, to take the stage at @FlutterConfLAT! His talk, β€œStop Being a Human Linter: Automating Flutter Architecture at Scale,” tackles a challenge every growing engineering team eventually hits: architecture guidelines shouldn’t live only in Confluence or rely on reviewers to catch every violation. πŸ“ Flutter Conf LATAM - CancΓΊn, Mexico πŸ—“οΈ September 22-23 🎟️ flutterconflatam.dev #FlutterConfLATAM #FCL2026 #FlutterDev
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Using Patrol? There’s a good chance you are, since it has 600K monthly downloads 🀯. But do you know all its capabilities? Or maybe you’ve only heard about it? Then it’s never too late to start. There’s an article about @patrol_leancode, including extra powers like test sharding, how to get better at using Patrol MCP, and more. 🌟 Worth checking out πŸ‘‡ leancode.co/blog/everything-… #FlutterDev #E2ETesting #FlutterTesting
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The Challenge: building reliable E2E tests for an app that depends on connected devices. πŸ“± Eduard Siewert (Sonova) & @oskar_lncd (LeanCode) show how Sonova improved test coverage and shortened release cycles with hardware simulation and AI-generated tests πŸ€–. See how Patrol MCP lets AI agents inspect the UI and write tests efficiently. ▢️ Watch the talk: youtube.com/watch?v=5g66yqOF… #FlutterDev #FlutterTechSummit #E2ETesting @patrol_leancode
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Replying to @ksztandur
That thing is fast 😎
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Our team is back from @FlutterNFriends and, well… they were pretty busy there, thanks to you - if you attended. πŸ˜‰πŸ’™ Flitz demos, 3 talks (delivered by @matiwojt, @albert_wolszon, Artur, @Fiolek_ ) & a Flutter E2E workshop with Marionette + Patrol MCP (by @oskar_lncd) & lots of great conversations. Btw. Oskar said that seeing around half the room already actively using @patrol_leancode made the workshop particularly fun. Our team also came back inspired: @schultek_dev & @parlough - Jaspr got some of us coding right away πŸ˜…, and @algebrandon’s GPU demo had the whole room silent. πŸ‘€ It really felt like Flutter AND Friends: technical, social, funny & full of people excited to build cool things. Thanks to everyone who stopped by! πŸ’™ One feature request for next year: bring back Code in the Dark. πŸ‘€ #FlutterDev #FlutterNFriends26
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Have you tried our #opensource package advanced_forms? Our team member @ksztandur is taking great care of it - and just released v0.2.1! πŸš€ There's also a brand-new page with everything you need to get started and see what advanced_forms can do. #FlutterDev give it a try πŸ’™
I didn't want to make you read a wall of README without seeing what the package is capable of. So advanced_forms just got a new homeΒ πŸ‘‰ advanced-forms.leancode.co/ πŸŽ‰ Every example on the landing page is a real Flutter form with its code right next to it, running in your browser and powered by Jaspr (thanks @schultek_dev for that brilliant talk at @FlutterNFriends πŸ’™). By creating this website I wanted you to feel the difference by interacting with these live Flutter forms instead of just reading about them πŸ’ͺ I also expanded the docs with more valuable info πŸ“„ A proper website let me sneak in the stuff that would normally bloat the README and make it indigestible. Plus, you're getting interactive examplesΒ :) Go on and try it!
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πŸš€ 24 Flutter & Dart Hacks. How many do you know? Check them all πŸ‘‰ leancode.co/blog/flutter-cod… We’ve collected practical patterns from our daily work at LeanCode to help you write less boilerplate, keep your code cleaner, and catch mistakes earlier. Special thanks to @ksztandur and Agnieszka Forajter for collaborating on the #LeanFlutterHacks series. πŸ’› #FlutterDev #CleanCode
πŸ€– Made with AI
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Our team will be showing you some cool stuff at our booth at Flutter & Friends πŸ€“
Replying to @LeanCodePl
@LeanCodePl and I are on @FlutterNFriends 2026! Come talk to us on our booth and hit me up about advanced_forms! SPOJLER - I just leaked the official AF logo πŸ‘€
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4/4 πŸ§ͺ 5th Sept.: 13:00 - Hands-On: Writing Flutter E2E Tests with AI and Patrol by @oskar_lncd Stop asking AI to write E2E tests blind. Connect your AI agent to Patrol and Patrol MCP, then make it explore, write, run, debug, and fix real Flutter E2E tests with you in the driver’s seat.
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3/n πŸ€– 16:20 - Closing the Loop: Autonomous Agents in Flutter with Marionette MCP by @matiwojt What if your AI agent could actually use the Flutter app it just built? Tap. Type. Scroll. Inspect. Debug. Hot reload. Find its own bugs. Fix them. Verify the result. That’s Marionette MCP.
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2/n βš™οΈ 15:30 - Building Flitz: How We Modified the Flutter Engine So Your Team Could Iterate Faster by @Fiolek_ What if reviewing a Flutter change was as easy as scanning a QR code? Meet Flitz - and hear how solving a collaboration problem took us deep into the Flutter Engine and Dart VM.
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1/n βœ… 14:00 - Technically Accessible, Actually Usable: A11y for 1M MAU in Practice by @albert_wolszon & Artur WiΕ›niewski Accessible on paper β‰  usable in practice. Lessons from a year of shipping a11y in a Flutter banking app with 1M MAU: real screen reader users, production pitfalls, WCAG, semantics, focus, forms & more.
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