DolphinPort: An Android-Only Wallet App in Flutter for Learning and Demo Purposes

⚡ The gist in 5 seconds - The SmartDolphinStudio/DolphinPort repository on GitHub now hosts DolphinPort — a digital wallet frontend written in Flutter. - The project runs on Android only and requires no backend: all data is generated in-memory. - It's an educational and demo build, not intended for real financial transactions. ### 🔍 What was found DolphinPort replicates the interface of a modern payment app: a login screen, balance, a payment card, a transaction feed, and analytics. The entire UI is built in Flutter; the project is deliberately built for Android only, with no iOS, web, or desktop configurations. The data is deterministic and stored in device memory. Any non-empty email and password will get you into the demo. The app implements an authentication flow (splash, login, sign-up, password recovery, and a third-party quick login), a home dashboard with an animated balance and a silver card, card number masking with reveal after a password or biometric check, plus transactions with Today, This week, This month, This year, and Custom date-range filters. Analytics includes bar, line, and pie charts with income/expense filters and a category ranking. Building requires Flutter 3.44 stable, Dart 3.12+, JDK 17, Android SDK platform 37, and build tools 37.0.0; on the device — Android 7.0 (API 24) or newer. Launch is done with flutter pub get and flutter run --release. A release APK for arm64 is built via flutter build apk --release --target-platform android-arm64, with the file appearing in build/app/outputs/flutter-apk/app-release.apk. The release includes R8 minification and resource shrinking. The release signature is taken from android/key.properties, which is not stored in VCS; if it's missing, a debug signature is used. A Rust stub in the rust/ directory requires Rust 1.80+ but is not part of the Android build. ### 💡 Why it matters This is a ready-made example for studying Flutter and the structure of wallet apps. The repository structure separates app, core, data, models, screens, and widgets layers, and the docs describe the architecture, layering, routing, and data flow. A developer can dig into how typical elements are made: custom filters, charts, card protection, and balance animations. The project is distributed under the MIT license, so the code is easy to adapt for your own needs. That said, DolphinPort is not a replacement for a real wallet — it's specifically an educational sample. ### 🧩 Context The authors explicitly state that DolphinPort does not process real payments, does not store real credentials, and does not communicate with financial institutions. The roadmap mentions a Rust stub — a reserve for a future service that could get an admin console, security helpers like short-lived token issuance, and short-term data retrieval. Currently this component is not connected to the mobile app, and the entire frontend remains fully autonomous and self-contained.

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