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Native & Cross-Platform Mobile App Dev

We build high-performance mobile applications. Native Swift iOS layouts, Kotlin Android code, and offline-first Flutter platforms.

Enterprise Business Challenges

Modern business issues we encounter and solve.

Deploying mobile applications for logistics, operations, or retail environments requires an understanding of South Africa's diverse network conditions. General mobile apps fail when users enter low-signal rural areas. If your drivers, sales teams, or consumers lose app functionality when they go offline, transaction data is lost, dispatch cycles are delayed, and operational friction increases.

We engineer high-performance mobile applications featuring secure offline-first local databases, real-time GPS synchronization, and push notifications pipelines. We build native platforms (using Swift and Kotlin) and cross-platform engines (using Flutter or React Native) designed specifically to execute business workflows reliably.

01 / CHALLENGE

Offline Data Synchronization Failures

Mobile apps that rely purely on live signals freeze when connections drop, leading to transaction losses and driver logging delays.

02 / CHALLENGE

High App Store Rejection Rates

Publishing to Google Play or Apple App Store without strict policy checks results in rejections, delaying product launch schedules.

03 / CHALLENGE

Battery and Performance Drain

Inefficient background location queries and heavy code assets drain phone batteries and slow down interface responsiveness.

Martelo's Architectural Solution

How our engineering team resolves system friction.

We design and build secure offline-first mobile applications optimized for South African network environments.

Our developers build native and cross-platform apps backed by robust local databases (like SQLite or Realm). When a user inputs data offline, the information is secured locally on the device. Once a signal is detected, the app automatically syncs the records with your central cloud database.

We manage the entire app store deployment pipeline. From configuring push notification payloads and location tracking to auditing assets against Apple's strict human interface guidelines, we handle the setup to ensure approval.

We optimize code to protect device performance. This means writing memory-efficient queries, managing background location intervals, and optimizing image assets to keep download packages light.

Service Capabilities & Features

Granular breakdown of our technical competencies.

SYNC

Offline-First SQLite Database

Implement local database architectures on mobile devices, ensuring full functionality and automated data synchronization on signal reconnect.

LOCATIONS

Background GPS Tracking

Build efficient background location queries and geofencing limits to track fleet logistics routes without draining battery health.

NOTIFICATIONS

Enterprise Push Pipelines

Connect Firebase Cloud Messaging or Apple Push Notification services to route instant dispatcher updates to operators.

STORE

App Store Policy Compliance

Audit mobile code assets against Google Play and Apple App Store criteria, managing the full publishing lifecycle.

Tangible Project Deliverables

What you receive upon project completion.

We believe in absolute transparency. Every project milestone translates into standard-compliant, audited deliverables. You retain complete ownership of all repositories, network diagrams, configuration sets, and documentation.

iOS Swift & Android Kotlin Source Code Fully documented mobile repository featuring modular build architectures.
VERIFIED
Figma UI/UX Mobile Wireframes High-fidelity layouts mapping out all screen navigation trees and flows.
VERIFIED
App Store Build Deployments Active application builds uploaded to TestFlight and Google Play Console.
VERIFIED
API Integration Documentation Data mapping logs explaining connections between mobile apps and cloud backends.
VERIFIED

Key Business Benefits

Defining return on investment and risk mitigation metrics.

BENEFIT

Uninterrupted Mobile Workflows

Offline-first database setups ensure your field teams can log data anywhere, regardless of signal strength.

BENEFIT

Fast App Store Approval

Our policy compliance audits prevent common store rejections, accelerating product launch times.

BENEFIT

Optimized Battery Longevity

Efficient background scripts preserve device battery life, reducing field hardware cycles.

Utilized Modern Technologies

Standard-compliant frameworks, tools, and platforms.

TECHNOLOGY Flutter / Dart
TECHNOLOGY Swift (iOS)
TECHNOLOGY Kotlin (Android)
TECHNOLOGY SQLite / Firebase

Our Operational Process

Five phases from planning to continuous optimization.

01 Mobile Audit

Analyzing offline data requirements, location query profiles, and target device hardware.

02 UX Wireframing

Designing thumb-friendly mobile layouts, navigation structures, and interactive states.

03 App Engineering

Coding custom layouts, database caching rules, and location background tracking scripts.

04 Store Testing

Running automated tests on physical devices, testing network drops, and verifying battery use.

05 Launch & Sync

Publishing the approved builds to the App Store and Google Play, and configuring push services.

Client Case Study

Real outcomes for real enterprise clients.

PROJECT SUMMARY

Offline-First App for Freight Fleet

Business Challenge

Monolithic web app froze when logistics drivers entered remote South African routes, causing shipment log delays.

Our Solution

Built a custom Flutter app with local SQLite storage, syncing signatures and photos on reconnect.

Quantitative Outcome

Driver logging errors fell by 99%, billing updates accelerated by 3 days, 100% data consistency.

Technology Stack: Flutter, SQLite, AWS S3, Firebase Cloud Messaging

Frequently Asked Questions

Common inquiries regarding our Native & Cross-Platform Mobile App Dev services.

Q: What is the benefit of Flutter over pure Native apps?

A: Flutter allows us to write a single codebase that runs on both iOS and Android. This reduces development costs by roughly 40% and ensures feature consistency across platforms.

Q: How does offline sync work with conflicting database updates?

A: We implement timestamp-based data resolution rules. When devices reconnect, our cloud API compares update logs and merges records cleanly.

Related Services

Explore complementary infrastructure and design capabilities.

Custom Software Dev → UI/UX Design Systems →
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Book a Consultation Briefing

Ready to deploy? Sit down with our senior technology team to map out scope, budget frameworks, and timelines. Receive a fixed quotation on review.

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