SAPA AMANAH Mobile Application Development

Status: Currently in final testing phase, preparing for official launch

Availability: Debug version available for internal testing

Release Timeline: Scheduled for public release on Play Store and App Store in Q2 2025

SAPA AMANAH is a Flutter-based mobile application I developed for PT Perkebunan Nusantara I, one of Indonesia’s largest state-owned plantation enterprises. The application was designed to digitize monitoring and reporting processes in the plantation sector that were previously performed manually, resulting in operational inefficiencies and difficulties in data-driven decision making.

Frontend: Flutter 2.8+ with clean architecture approach

Backend: Laravel 8-based RESTful API

Database: MySQL (server) and SQLite (local storage)

State Management: BLoC Pattern with flutter_bloc 8.0

Authentication: JWT token with refresh mechanism

Offline Capability: Floor Database + custom synchronization algorithm

GPS Integration: Flutter geolocator + Google Maps API

Deployment: CI/CD with Bitbucket Pipelines

Methodology: Agile Scrum with 2-week sprints

Clean Architecture with separation of concerns

Automated testing (unit, widget, integration) with >75% coverage

CI/CD implementation for consistent delivery

Comprehensive documentation and knowledge transfer

Post-implementation support and iterative improvement

Field Inspection: Digital system replacing paper forms, reducing inspection time by 65%

Harvesting Point Inspection: Digital monitoring with GPS verification, improving reporting accuracy by 80%

Fertilization Tracking: Documentation with photo and GPS validation, reducing fraudulent reporting by 90%

Pest Control Management: Analytical dashboard for risk area identification

Road Maintenance Tracking: Ticket system for infrastructure issue handling

Harvest Cycle Management: Schedule optimization with calendar visualization

Leftover Fruit Bunch Recording: Real-time tracking with automated notifications

Processing Morning Roll Call: Digitized attendance and briefing with audit trail

Wastewater Treatment Monitoring: Real-time dashboard with alert system

Equipment Failure Reporting: Ticket system with priority levels and status tracking

Failure Analysis: Structured forms with simple AI-based recommendation system

Failure Resolution: Multi-level approval workflow with notifications

Routine Sorting Checks: Digital checklists with supervisor validation

Performance Dashboard: Interactive data visualization with 12+ key KPI charts

Follow-up Action System: Follow-up workflow with automatic deadlines and reminders

Smart Synchronization: Data priority algorithm using bandwidth constraints

Multi-channel Notifications: In-app, email, and WhatsApp API integration

User Management: RBAC (Role-Based Access Control) with 8 different access levels

Limited Connectivity: Plantation areas with sporadic 2G/3G signal

Relational Data Complexity: Hierarchical data structure (estate > division > block > field)

24/7 Offline Requirements: Operations must function without internet connection

GPS Accuracy in Remote Areas: Difficulty obtaining accurate GPS signals

Device Variability: From entry-level to high-end smartphones

Encrypted Local Database: Using Floor/SQLite with encryption for sensitive data

BLoC Architecture with Repository Pattern: Separation of data, domain, and presentation layers

Delta Synchronization Algorithm: Sending only data changes, reducing data usage by 75%

GPS Augmentation: Combination of GPS, network location, and landmark references

Performance Profiling: Custom optimizations for low-end devices (2GB RAM)

Operational Efficiency: Reduction in reporting time from 3 hours to 45 minutes per day

ROI: Return on investment within 7 months through increased productivity

Error Reduction: 92% decrease in reporting errors compared to the manual system

Transparency: Executive dashboard enabling real-time monitoring by management

Revenue Increase: Contribution to an 8% increase in harvest yield through more effective inspections

Timeline: 2 Weeks (Feb 19 - Mar 12 2025)

Role: Flutter Developer

Team Size: 2