feat: Add Maxint case study to showcase section

sites/www/content/showcase/maxint.md

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+---
+title: Maxint
+description:
+  Learn how Maxint deployed to six platforms simultaneously with Flutter, saving
+  65% in codebase overhead.
+headline: Maxint
+summary: Building an autonomous financial OS across six platforms with Flutter
+appName: Maxint
+companyName: Maxint
+logo: images/third_party/case_studies/maxint/maxint_logo.webp
+card: images/third_party/case_studies/maxint/maxint_logo.webp
+locations:
+  - North America
+platforms:
+  - Mobile
+  - Desktop
+  - Web
+industries:
+  - Banking & Finance
+successMetrics:
+  - perc: 65
+    desc: code avoided vs native multi-platform
+  - text: "3-4x"
+    desc: fewer front-end engineers needed
+  - text: "6"
+    desc: platforms launched from day one
+tags:
+  - mobile
+  - desktop
+  - web
+  - ios
+  - android
+  - macos
+  - windows
+  - linux
+  - ai
+publishDate: 2026-08-21
+---
+
+[Maxint](https://maxint.com) is an autonomous financial operating system. Built
+with Flutter, it unifies enterprise accounting, multi-platform monetization, and
+AI-powered robo-advising into a single, precision-engineered workspace designed
+to provide the signal minus the noise.
+
+As a lean startup, Maxint needed to rapidly deploy an enterprise-grade financial
+operating system across iOS, Android, macOS, Windows, Linux, and Web
+simultaneously. By launching on every major app store from day one, the team
+leveraged organic search discovery across multiple platform ecosystems to drive
+consistent user growth without spending a dollar on paid marketing.
+
+<Image
+  src="images/third_party/case_studies/maxint/maxint_body_1.webp"
+  format="fullwidth"
+  alt="Maxint running across desktop, tablet, and mobile platforms"
+/>
+
+**Trial by fire: From hackathon to production in three months**
+
+Rather than spending weeks evaluating frameworks in committee, the team tested
+Flutter during the TechCrunch Disrupt hackathon. Faced with tight time
+constraints after evaluating options like React Native, Ionic, Xamarin, and
+native platforms, they chose Flutter to build a fully functional proof of
+concept for Maxint in less than 24 hours.
+
+The success of this hackathon validated Flutter's developer velocity, responsive
+charting, and local state management across devices. Following the hackathon
+success, a lean team spent three months architecting the production-ready
+financial OS, deploying native applications across all six target platforms
+simultaneously. This was a timeline that likely would have required over a year
+using siloed native teams.
+
+**Why Flutter? Single codebase portability and rendering performance**
+
+Portability across desktop and mobile served as Maxint's foundational growth
+engine. By maintaining a single Dart codebase, complex mission-critical
+logic—such as their double-entry ledger, local encryption, and financial
+reporting engine—only had to be written and audited once, guaranteeing complete
+feature parity and data accuracy across all user devices.
+
+To meet the high UI performance standards of financial software, Maxint relies
+on Flutter's Impeller rendering engine on iOS and Android. By pre-compiling
+shaders ahead-of-time (AOT) and using modern native graphics APIs like Metal and
+Vulkan, Impeller renders complex, data-dense financial charts at 120 frames per
+second without blocking the UI thread. Additionally, Flutter's hot reload
+feature accelerated iteration, allowing the team to refine dense ledger layouts
+and state logic without restarting the app.
+
+<Image
+  src="images/third_party/case_studies/maxint/maxint_body_2.webp"
+  format="fullwidth"
+  alt="Maxint enterprise accounting interface rendering at 120fps"
+/>
+
+**Building Finsight: Bidirectional conversational AI with Flutter**
+
+Maxint built Finsight, a fluid voice-driven financial assistant, directly within
+the Flutter ecosystem by orchestrating
+[`speech_to_text`](https://pub.dev/packages/speech_to_text) and
+[`flutter_tts`](https://pub.dev/packages/flutter_tts). The application uses
+continuous listening and partial transcription to stream user queries to
+language models while the user speaks, minimizing perceived latency.
+
+When generating spoken feedback, Finsight attaches context tags (such as urgent
+alerts or routine portfolio summaries) to dynamically adjust parameters like
+`setSpeechRate` and `setPitch` in `flutter_tts`. Using
+[Riverpod](https://riverpod.dev/) for state management, the on-screen visualizer
+pulses in synchronization with audio callbacks, maintaining a unified
+interactive state across mobile, desktop, and web platforms.
+
+<Image
+  src="images/third_party/case_studies/maxint/maxint_body_3.webp"
+  format="fullwidth"
+  alt="Maxint complex market analysis powered by local LLMs"
+/>
+
+**Overcoming multi-platform friction: Building Orca**
+
+Synchronizing user entitlements across the Apple App Store, Google Play,
+Microsoft Store, and Stripe presented a major technical hurdle due to isolated
+store silos. To solve multi-platform subscription management, Maxint developed
+an internal unified billing infrastructure and released it to the developer
+community as [Orca](https://orca.maxint.com/).
+
+Building for desktop also required investing in desktop-native UX paradigms,
+including information-dense layouts, robust keyboard shortcuts, right-click
+context menus, and window state management, while keeping double-entry ledger
+math completely isolated from UI rendering.
+
+**Key results and business impact**
+
+Building with Flutter transformed Maxint's resource efficiency and release
+cadence:
+
+- **65% less code:** Avoided writing and maintaining at least 65% more code
+  compared to managing separate native codebases (Swift, Kotlin, C\#, C++, and
+  TypeScript).
+- **3x to 4x team efficiency:** Operates with 3x to 4x fewer front-end engineers
+  than needed for native multi-platform parity.
+- **Day-one six-platform cadence:** Pushes simultaneous, feature-complete
+  updates to iOS, Android, Web, macOS, Windows, and Linux on a weekly basis.
+- **Ecosystem contribution:** Created and launched Orca to streamline
+  cross-platform billing for Flutter developers.
+
+<br /> 
+<br />
+
+**What's next for Maxint and Orca**
+
+Maxint's roadmap includes expanding Orca's SDK capabilities across web and
+desktop platforms for unified paywalls and revenue analytics. For the core
+platform, Maxint is building upon its current on-device receipt parsing, powered
+by Google’s ML Kit, by doubling down on privacy-first AI intelligence.
+
+<Image
+  src="images/third_party/case_studies/maxint/maxint_body_4.webp"
+  format="fullwidth"
+  alt="Unified cross-platform monetization architecture powered by Orca"
+/>
+
+The team is integrating small-footprint local LLMs (including custom
+135M-parameter transformer models) to execute highly advanced document parsing,
+cashflow forecasting, and transaction categorization entirely on the user's
+hardware. The team is also expanding their tax engine to support
+multi-jurisdiction calculations, local currency reconciliation, and native
+electronic tax filing with the IRS.
+
+<br />
+<br />