
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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β‘ New Release: marionette_mcp v0.7! β‘
Your AI agent can already use your running Flutter app through #MarionetteMCP. Now every run also leaves a report, steps, screenshots, and the agent's own write-up, all in one folder. One line to turn on.
Also new in 0.7.0:
β
Each look at the screen is about 65% smaller, so long sessions use less context.
β
Ships its own Agent Skill, so your agent knows the setup
β
Reaches long lists, bottom sheets and dialogs
β
Picks the right element, even among identical cards
β
Switches your running app to dark mode or larger text
π marionette.leancode.co/
#FlutterDev #AIAgents
π€ Made with AI
Getting your Flutter app ready for iPhone Duo takes one widget. π±
We just shipped duo_kit - LeanCode's new open-source package for #iPhoneDuo. Wrap your app in βFoldScaffold', and your nav bar moves into the side strip as the phone unfolds.
πpub.dev/packages/duo_kit
#FlutterDev give it a try. π
Seeing a feature β actually trying it π
Does the interaction feel right? Is the flow intuitive? Does everything work? Way easier to answer when the whole team can try the app firsthand.
Last week, we introduced #Flitz, our tool for hands-on app reviews in #Flutter teams, and the response blew us away. π Today, we want to show you how it works in practice.
With Flitz, everyone tries the app on their own phone:
π Engineers get feedback while still in the code.
π Designers test AI-built designs as real apps, no dev needed.
π POs walk the flow and decide the same day.
π QA catches issues before merge.
And the best part? You don't have to change your existing workflow or release process. π
Book a demo π flitz.dev
#FlutterDev
4th time at @FlutterconWorld Berlin, and still just as exciting!π
Last week, we brought a little piece of LeanCode to Berlin again, not just to show what we do, but to share a bit of who we are, too - a team that loves building useful things.
So cool to see you checking out Flitz, Patrol Dispatch, and our 6 open-source packages. Your questions, feedback, and kind words gave us even more reasons to keep building cool stuff. π
Add 8 talks from our team π€, lots of Flutter chats, coffee, LeanCode beer, and some great people into the mixβ¦ and that's a pretty awesome week.
See you in Berlin next year! π
#FlutterCon26 #NextApp26 #FlutterDev
LeanCode π retweeted
advanced_forms just passed 5,000 downloads on pub.dev ππ Big thank you to everyone building forms with it!
Interactive examples, docs and the agent skill πΒ advanced-forms.leancode.co
π Day 3 at @FlutterconWorld Berlin is here! Been busy with all the talks over the past two days and haven't heard about Flitz yet?
Come by our booth so @Fiolek_ can show you a quick demo of Flitz (you might also walk away with a brand-new Flitz mugβ).
Flutter makes the developer's coding loop fast. But what about the product team's feedback loop? That's where Flitz comes in.
#FlutterCon26 #FlutterDev #Flitz #NextApp26
Hey #FlutterDev π Weβre putting together something useful aroundΒ #AddToApp, but first we want to hear more stories about your #AppMigration to Flutter.
β¨ Hereβs the deal: β¨ If youβre at @FlutterconWorld Berlin and have been on a team that migrated an app, come chat with us at the LeanCode booth! Share your migration story for a mug. Deal? π
Reach out directly to @mchudy_, who gave todayβs talk, βThe Reverse Flutter Journey,β or stop by our booth and tell us youβre here to talk app migration.
#NextApp26
π€ Made with AI
π Day 2 at @FlutterconWorld Berlin is on! Have you heard about Patrol Dispatch yet? π
If not, nowβs the perfect time to check it out!
Stop by the LeanCode booth and let our team show you Patrol Dispatch - our new autonomous AI agent for Flutter E2E testing. π€
π Where to find us: Head to the back of the sponsor area, right next to the FlutterCon3 stage.
See you there! ππ
#FlutterDev #FlutterCon26 #NextApp26 #PatrolDispatch
Flutter community is the best so it deserves the best coffee in the best mug π.
Thanks guys π
#FlutterDev #nextapp26 #fluttercon26
LeanCode π retweeted
I'm at @FlutterconWorld Berlin 2026 π You can meet me at @LeanCodePl's booth, so we can talk if any of our open source packages meets your project's needs π
Easy form state management? Robust lint's? Dead code remover? Modern dependency injection? Cool MCPs? Tests? Or maybe just a tasty coffee? We have everything in here πͺ
Here we are, LeanCode from above atΒ @FlutterconWorld Berlin. π
It looks quite busy, and it's great! We love to chat with you all, especially about our new solutions and open-source packages. If you haven't visited our booth yet, don't hesitate to stop by. π
π Find LeanCode in the sponsor area - head all the way to the back, right next to the FlutterCon3 stage. See you there! π
#FlutterDev #FlutterCon26 #NextApp26
Coffee, code, and Flutter - sounds like a good reason to stop by. βπ
Weβre at @FlutterconWorld ! Come visit the LeanCode booth, grab a coffee, meet the team, and chat with us about our new solutions, Patrol Dispatch and Flitz, plus our open-source packages you can use in your Flutter apps.
π Find LeanCode in the sponsor area - head all the way to the back, right next to the FlutterCon3 stage. See you there! π
#FlutterDev #FlutterCon26 #NextApp26
Have you ever struggled to show your PRs to Designers, Product Owners, or Project Sponsors? Say goodbye to screenshots and screen recordings.
Meet #Flitz β a faster way to get your app onto their devices in under 3 minutes, not hours! π
Flitz turns any branch into a shareable preview link that anyone on your team can open instantly on a real device.
No PR, no CI run, no TestFlight upload.
Here's how Flitz works:
1οΈβ£ Make a change on your branch.
2οΈβ£ Publish a preview.
3οΈβ£ Share the link or QR code with your teammates.
What used to take a full day now takes under 3 minutes. Thatβs up to 99% less waiting.
See Flitz in action π flitz.dev
#Flutter #FlutterDev
Talks delivered by the LeanCode team:
π
Wednesday 7th Oct.
π 1.50-2:30 PM Building Flitz: How We Modified the Flutter Engine So Your Team Could Iterate Faster
π 2:50-3:30 PM Dependency Injection in Enterprise Flutter Applications
π
Thursday 8th Oct.
π 1.50-2:30 PM The Reverse Flutter Journey: Taking a Production Flutter Web App to iOS and Android
π 4.30-5:10 PM Marionette MCP: Give AI control of your Flutter app
π
Friday 9th Oct.
π 12:00-12:40 PM Using Bluetooth Low Energy in Flutter
π 1:50-2:30 PM Stop Being a Human Linter: Automating Flutter Architecture at Scale
π 2:50-3:30 PM Technically Accessible, Actually Usable - A11y for 1M MAU in Practice
π 4:30-5:10 PM Flutter Refactors at Scale: Change Everything, Break Nothing
See you in Berlin! π
Meet the LeanCode team at @FlutterconWorld Berlin!π
Weβre bringing 8 talks across 3 days - all rooted in hands-on experience from building enterprise Flutter apps.
Want a side quest? Find every LeanCode member from the photo at the venue and high-five them. Achievement unlocked if you get all 14. π
Between talks, find us at the LeanCode booth - see what weβve been building, ask us anything, or come for the coffee. We wonβt judge. β
Full LeanCode talk lineup in the first comment π
#fluttercon26 #FlutterDev #nextapp26
Are you ready for @FlutterconWorld Berlin? We definitely are! π
Time flies - and for the 4th year in a row, LeanCode is proud to be a Silver Sponsor of FlutterCon Berlin! π₯β¨
And weβre bringing something new. π Weβve been working on solutions that we canβt wait to show you at our booth. Come by and see what weβve been building!
πBerlin, October 7β9. See you there! π
#fluttercon26 #FlutterDev #nextapp26
Patrol or Maestro for Flutter app testing? Hereβs what you need to decide. π leancode.co/blog/patrol-vs-mβ¦
Both solve the same problem with different architectures: Patrol runs inside your appβs process, while Maestro drives it from the outside. These are foundational decisions, not feature gaps.
Read & understand the trade-offs.
#FlutterDev #E2ETesting @patrol_leancode
Complicated forms. Simple code. Meet advanced_forms - our new #opensource package by @ksztandur for building complex Flutter forms in an easy way. π
Conditional sections. Fields that depend on each other. Validation that has to fire at the right moment. Easy async validation with debouncing.
Your superpowers with advanced_forms:
π³ Your form is a tree.
β
3 validation modes out of the box.
π Fields can update or revalidate each other.
π€ An official Agent Skill.
Try it out: advanced-forms.leancode.co
#FlutterDev #Dart










