Top 1% Flutter & Mobile App Agency

Crafting Digital Experiences That Inspire

We build high-performance mobile apps and scalable web platforms for ambitious startups and enterprises worldwide. Transform your vision into a stunning reality.

50+
Apps Delivered
10+
Countries
100%
Client Success
AI Buddy AppAxxo App
Top RatedMobile Agency
60 FPS Native Performance
Engineering Philosophy

We Don't Just Write Code.
We Architect Scalable Products.

Founded in 2021, Nautilus Techlabs is a boutique mobile and web engineering consultancy. We partner with ambitious founders and engineering leaders to design, build, and deploy production-grade software.

With over 50+ launched apps and a spotless track record across North America, Europe, and the Middle East, our team pairs deep domain expertise in Flutter, Swift, and modern Cloud backends with rigorous quality benchmarks.

🔒

100% IP Ownership

Full source code, repositories, and design systems are legally transferred to you.

60 FPS Performance

Optimized memory footprints, responsive UI rendering, and sub-second load times.

🎯

Agile 2-Week Sprints

Predictable timelines, weekly demo builds, and transparent Slack communication.

100% Job Success

5.0 ★ rating on Clutch & top-rated badge on Upwork across all engagements.

LuxPass EPOS Production Architecture
STMZ Swiss Emergency Map App
5+
Years of ExcellenceEst. 2021 • 50+ Apps Delivered
What We Deliver

Specialized Engineering Services
Built for Growth

From early-stage MVP prototypes to enterprise-scale applications, we deliver clean architecture, native speed, and reliable software delivery.

Cross-Platform Flutter Development
Flagship Specialty

Cross-Platform Flutter Development

Single-codebase iOS, Android, and Web apps compiled directly to native ARM machine code with 60fps performance and up to 40% savings on development lifecycle.

What's included:
  • Pixel-perfect custom UI & 60fps animations
  • Offline-first local SQLite/Hive data sync
  • Native device bridges (BLE, GPS, Biometrics)
  • App Store & Google Play launch compliance
Native iOS & Android Engineering
Native Performance

Native iOS & Android Engineering

Bespoke native applications written in modern Swift/SwiftUI and Kotlin/Jetpack Compose for compute-heavy workloads, background audio, and hardware integrations.

What's included:
  • Pure Swift/SwiftUI & Kotlin/Compose architecture
  • High-throughput BLE & IoT device protocols
  • Compute-heavy background processing & audio
  • Apple Watch, Widgets, & dynamic island support
AI & Smart Mobile Integrations
AI & Innovation

AI & Smart Mobile Integrations

Empower your mobile application with on-device CoreML/TensorFlow Lite and high-speed LLM pipelines for generative AI, smart chat companions, and computer vision.

What's included:
  • Real-time streaming LLM chatbot interfaces
  • On-device CoreML & TensorFlow Lite inference
  • Generative image, audio & text pipelines
  • Vector embeddings & semantic search integration
Full-Stack Web & Admin Portals
Scalable Web

Full-Stack Web & Admin Portals

Ultra-fast web platforms, customer portals, and real-time administrative dashboards built with Astro, React, TypeScript, and modern serverless backends.

What's included:
  • Sub-second page loads with 100% Core Web Vitals
  • Role-based access control (RBAC) & security
  • Real-time analytics and inventory dashboards
  • Serverless APIs & PostgreSQL data pipelines
UI/UX Design & Interactive Prototypes
Product Strategy

UI/UX Design & Interactive Prototypes

Human-centered design systems crafted in Figma. We transform complex product workflows into frictionless, intuitive mobile interfaces that maximize retention.

What's included:
  • User journey mapping & interactive wireframes
  • Clickable high-fidelity Figma prototypes
  • Scalable design tokens & design system handoff
  • Usability testing & conversion rate optimization
App Modernization & Code Review
Maintenance & SLA

App Modernization & Code Review

Refactor legacy codebases, eliminate technical debt, upgrade outdated Bluetooth protocols, and establish continuous monitoring with dedicated post-launch SLA support.

What's included:
  • Deep architecture & memory leak profiling
  • BLE protocol modernization & crash prevention
  • OS update compatibility & continuous security patches
  • Automated CI/CD pipelines & crash analytics
Agile Workflow

How We Turn Concepts Into Production Software

A battle-tested agile delivery pipeline with zero ambiguity, weekly test builds, and guaranteed on-time releases.

01
Week 1

Discovery & Architecture

We analyze your product goals, map user journeys, define the technical stack, and formulate a transparent, sprint-based delivery roadmap.

Key Output:
  • Product Specification
  • Database Schema
  • Architecture Blueprint
02
Week 2 - 3

UI/UX & Interactive Prototype

Crafting modern, accessible Figma interfaces with design tokens and clickable mobile prototypes for immediate stakeholder alignment.

Key Output:
  • Figma Design System
  • Clickable Prototype
  • User Flow Diagrams
03
Weeks 4 - 8

Agile Sprint Engineering

Bi-weekly development cycles with clean modular code, continuous integration, and weekly demo test builds provided directly to your device.

Key Output:
  • Weekly Demo Builds
  • Clean Source Code
  • CI/CD Pipeline
04
Week 9

Rigorous QA & Security Audit

Automated regression suites, manual exploratory testing, memory leak profiling, and penetration checks to ensure flawless store release.

Key Output:
  • QA Audit Report
  • Performance Benchmarks
  • Security Clearance
05
Week 10+

Store Launch & Growth SLA

Handling end-to-end Apple App Store & Google Play submissions, developer portal compliance, analytics tracking, and continuous SLA support.

Key Output:
  • 100% Store Approval
  • Analytics Integration
  • SLA Maintenance
Production Portfolio

Explore Our Production Applications

A complete catalog of our mobile applications, AI engines, IoT integrations, and enterprise web solutions delivered worldwide.

AI Buddy
AI & Lifestyle
View Details
iOS & Android (Flutter)

AI Buddy

A Flutter-built AI companion for generating art and chatting with unique AI personas using polished mobile interfaces.

FlutterOpenAI APIRevenueCat
Axxo
Motorsports IoT
View Details
iOS & Android (Flutter)

Axxo

Motorsports precision tool for monitoring kart weight distribution via BLE scales with real-time data streaming.

FlutterBLE 5.0Reactive Canvas
Lux Pass Epos
Retail & Salon POS
View Details
Cross-Platform (Flutter)

Lux Pass Epos

A feature-rich salon management tool for scheduling, multicenter transactions, and business growth analytics.

FlutterFirebaseStripe Terminal
STMZ
Public Utility & GIS
View Details
iOS & Android (Flutter)

STMZ

Multilingual Swiss animal rescue app featuring interactive maps, real-time alerts, and a veterinary hospital locator.

FlutterMapbox SDKi18n
Brand Studio
Marketing Automation
View Details
iOS & Android (Flutter)

Brand Studio

Empowers businesses with AI tools for festival marketing, creating branded social media content from a curated library.

FlutterAI GraphicsSocial APIs
PopOff
Social & Dating
View Details
iOS & Android (Flutter)

PopOff

PopOff is a social dating app for swiping through potential matches using photos and short profiles.

FlutterWebSocketsPush Alerts
Speak Notes
Speech & AI
View Details
iOS & Android (Flutter)

Speak Notes

A versatile Speech-to-Text application supporting live recording and audio file uploads for instant conversion.

FlutterSpeech-to-TextAudio Processing
SCS Pooled Trust
Fintech & Banking
View Details
iOS & Android (Flutter)

SCS Pooled Trust

The ultimate mobile trust app for managing accounts, viewing transactions, and requesting disbursements on the go.

FlutterFintechCheck Deposit
All Social
AI Content Engine
View Details
Web & Mobile

All Social

An AI-driven marketing platform providing cost-effective, ready-made content for businesses worldwide.

FlutterReactAI Copywriting
Hue Pro DJ
Smart Lighting & Audio
View Details
iOS & Android (Flutter)

Hue Pro DJ

Elevate your DJ sets with custom-crafted lighting effects and strobes that sync perfectly with your music's beat.

FlutterPhilips Hue APIAudio FFT
Unit Converter
Utility & Tools
View Details
iOS & Android (Flutter)

Unit Converter

A fast and reliable Flutter app for offline unit conversions across multiple measurement categories with a clean UI.

FlutterOffline FirstClean Architecture
Todo App
Productivity
View Details
Cross-Platform

Todo App

A powerful productivity tool to manage daily tasks and projects, helping you stay organized and achieve your goals.

FlutterHive DBState Management
Zidd Fitness
Health & Fitness
View Details
iOS & Android

Zidd Fitness

A community-driven fitness app to find workout routines, track daily activity, and share gym progress with others.

FlutterCommunityActivity Tracking
Tethys e-ID
Digital Identity
View Details
iOS & Android

Tethys e-ID

A secure digital identity solution providing safe authentication on mobile devices, replacing paper and plastic IDs.

FlutterCryptographyBiometrics
Tethys e-ID Scanner
Identity Verification
View Details
iOS & Android

Tethys e-ID Scanner

The companion scanner app for Tethys e-ID, enabling eco-friendly and secure digital identification verification.

FlutterBarcode/QR ScannerSecure Auth
NT Music App
Audio & Entertainment
View Details
Android & iOS

NT Music App

A seamless local music player that organizes tracks and provides easy control from the notification and lock screens.

FlutterAudio PlayerLock Screen Controls
Witty Kids
EdTech & Kids
View Details
iOS & Android

Witty Kids

An engaging children's app with interactive learning and fun activities designed to stimulate young minds safely.

FlutterGamificationInteractive Canvas
Shuk Local Deals
Food & Dining
View Details
iOS & Android

Shuk Local Deals

Discover local dining options and exclusive deals. Check menus, prices, and store offers to make informed dining choices.

FlutterGeolocationStore Listings
Squadr_Game Together
Gaming & Social
View Details
iOS & Android

Squadr_Game Together

Coordinates gaming sessions by alerting friends when you're ready to play or when buddies come online for a match.

FlutterPush AlertsGaming Hub
Donation & Sponsorship
Non-Profit & Philanthropy
View Details
Cross-Platform

Donation & Sponsorship

Connects donors with needy causes, allowing organizations to manage requests and provide project feedback easily.

FlutterPayment GatewaysCrowdfunding
Charge Me
Lifestyle & Motivation
View Details
iOS & Android

Charge Me

Stay motivated with a constant stream of encouragement and share daily inspiration easily on social platforms.

FlutterSocial ShareQuotes Engine
Fahrlehrer.ch
EdTech & Driving
View Details
iOS & Android

Fahrlehrer.ch

A unique app for driving schools to congratulate students with custom photos and social media sharing features.

FlutterSocial IntegrationSwiss App
Quiffers Deals
E-Commerce & Deals
View Details
iOS & Android

Quiffers Deals

A commercial platform connecting buyers with real-time seller deals, product info, and physical shop locations.

FlutterE-CommerceDeals Map
Secure Web App Portal
Enterprise Web
View Details
Web Portal

Secure Web App Portal

A secure demo application designed to build user trust by keeping data interactions local and unified within the app.

ReactAstroWeb Security
Lee Distributors App
Logistics & Warehouse
View Details
Android & iOS

Lee Distributors App

An inventory tracking tool for warehouse shifts, monitoring product locations and access history for logistics teams.

FlutterInventory TrackingLogistics
Lee Distributors Web Admin
Admin Dashboard
View Details
Web Portal

Lee Distributors Web Admin

A comprehensive web dashboard for managing warehouse logistics, inventory data, and staff performance metrics.

Web PortalData TablesRBAC Auth
PM Vrundavan
Real Estate
View Details
iOS & Android

PM Vrundavan

A dedicated real estate app showcasing premium properties and project details for potential homebuyers.

FlutterReal EstateImage Gallery
Link by Everlink
Sound Protocols & IoT
View Details
iOS & Android

Link by Everlink

Instant networking via sound-based protocols, allowing secure professional verification without QR codes.

FlutterAudio UltrasonicNetworking
Property Circle
Real Estate Portal
View Details
iOS & Android (Flutter)

Property Circle

Custom real estate platform synced with WordPress, offering tailored discovery and consistent property listings.

FlutterWordPress REST APIProperty Search
Better Match
Matchmaking & Dating
View Details
iOS & Android

Better Match

A premium dating app designed for meaningful links through smart filters, secure chat, and advanced matchmaking.

FlutterChat WebSocketsMatch Engine
FitAim Companion
Fitness & Nutrition
View Details
iOS & Android

FitAim Companion

Comprehensive fitness companion for tracking workouts and customizing meal plans with progress visualization.

FlutterHealthKitNutrition Planner
Partnership Models

Flexible Engagement Tailored to Your Stage

Whether you are bootstrapping a new MVP or scaling an existing production team, we offer flexible contracts with zero hidden overheads.

Predictable Budget

Fixed Scope Milestone Model

Perfect for new greenfield products and MVPs with defined functional specifications. Clear milestones, guaranteed deadlines, and zero budget overruns.

  • Guaranteed fixed timeline & milestone deliverables
  • Transparent milestone-based stage payments
  • Includes complete UI/UX, Development & QA release
  • 30-Day complimentary post-launch warranty SLA

Not sure which model is right for your project?

Book a free 30-minute technical consultation directly with Bipin. We'll assess your project requirements, tech stack, and timeline.

Schedule Free Call
Technology Ecosystem

Enterprise-Grade Tech Stack

We select battle-tested, high-performance technologies to ensure your applications are secure, rapid to iterate, and built to scale.

Mobile & Cross-Platform

Flutter
FlutterCross-Platform UI
Dart
DartType-Safe Language
iOS (Swift)
iOS (Swift)Native Apple Platform
Android (Kotlin)
Android (Kotlin)Native Android Platform

Cloud, Backend & AI

Firebase
FirebaseAuth, Firestore & Functions
Supabase
SupabasePostgreSQL & Realtime
TypeScript
TypeScriptEnterprise Scalability
React / Astro
React / AstroModern Web Frontends

Design & Engineering Toolchains

Figma
FigmaDesign Systems & UI/UX
GitHub & CI/CD
GitHub & CI/CDAutomated Builds
Xcode
XcodeApple Development
Android Studio
Android StudioAndroid Tooling
Client Testimonials

Trusted by Ambitious Teams Worldwide

★★★★★5.0 / 5.0Verified Client Reviews on Clutch.co ↗
★★★★★
✓ Verified Client

"I had the great pleasure of working with Bipin and his team on our mobile app development using Flutter and Firebase. Bipin impressed me from the start with his professionalism and unwavering commitment to our project. His effective communication and consistent delivery of high-quality code made collaboration seamless."

N
NathanProduct Founder • 🇬🇧 United KingdomFlutter & Firebase Mobile App
★★★★★
✓ Verified Client

"Bipin was amazing to work with. A few requirements changed over the course of the project and Bipin made the required changes super professionally. The app is performant and the codebase is clean and well-documented."

D
DanielEngineering Director • 🇮🇱 IsraelCross-Platform Ecosystem
★★★★★
✓ Verified Client

"Bipin was amazing. Great communication, great ability to solve problems and prevent problems when discussing product. Very easy to talk to and work with. Always available for a call and willing to spend time to help solve issues."

M
Matthew SpectorStartup Founder • 🇺🇸 United StatesiOS & Android Production App
★★★★★
✓ Verified Client

"Our communication was online, direct, and fast. There was hardly any need to wait for relevant feedback. Delivered as expected with great quality and native speed."

A
Andi GuntertManaging Director • 🇩🇪 GermanySwiss Animal Rescue (STMZ)
★★★★★
✓ Verified Client

"Bipin is highly professional, delivered solid code on time, and was a pleasure to work with. He also made some great implementation suggestions that we adopted. I will surely work with Bipin in the future!"

N
Nathan LewisTech Lead • 🇺🇸 United StatesFlutter Architecture
★★★★★
✓ Verified Client

"Bipin was able to successfully upgrade an old Bluetooth protocol in a pre-existing app to a modern BLE protocol with great efficacy. Professional, knowledgeable, and delivered on time."

M
Matthew PeleshokMotorsport Tech Lead • 🇨🇦 CanadaAxxo BLE Telemetry App
Clear Answers

Frequently Asked Questions

Everything you need to know about our engineering standards, pricing transparency, sprint cycles, and IP ownership.

What is your pricing model and how do you estimate project costs?

We offer both fixed-price milestone contracts and dedicated monthly hourly teams. Every proposal begins with a complimentary scoping session where we break down features, architecture, and complexity into a transparent line-item estimate so you know exactly what is delivered.

How long does it take to develop and launch an MVP mobile app?

Simple to medium MVPs typically take 6 to 10 weeks from initial Figma wireframing to App Store and Google Play deployment. Complex ecosystems with custom hardware/BLE or heavy AI integrations typically require 3 to 5 months across agile 2-week sprints.

Do you sign Non-Disclosure Agreements (NDAs) before discussion?

Yes, unconditionally. We execute a mutual Non-Disclosure Agreement (NDA) before diving into any confidential concepts or technical documentation to legally protect your intellectual property from day one.

Who owns the code, design assets, and intellectual property?

You own 100% of the intellectual property. Upon project completion and milestone handover, complete git repositories, Figma design systems, backend configurations, and store listings belong exclusively to your company.

Why do you recommend Flutter over other cross-platform options?

Flutter compiles directly to native ARM machine code without slow JavaScript runtime bridges (unlike React Native). It delivers identical 60fps rendering across iOS and Android from a single codebase, accelerating feature velocity while saving up to 40% in maintenance costs.

Do you assist with Apple App Store & Google Play submissions?

Yes. We manage the entire store release lifecycle including developer account provisioning, App Privacy questionnaires, screenshot sets, compliance checks, and expedited review handling.

What communication and project management tools do you use?

We integrate directly into your workflow with dedicated Slack/Discord channels, Jira/Linear sprint boards, weekly live demo calls, and automated TestFlight / Google Play internal test distribution.

What post-launch maintenance and support options are available?

We provide dedicated post-launch SLA maintenance covering continuous OS compatibility updates (iOS & Android releases), performance monitoring via Sentry, bug triage, and feature expansions.

Get In Touch

Let's Scale Your Brand, Together

Ready to start your next project or have questions about tech stacks, pricing, or timelines? Reach out for a free consultation.

🔒 Your privacy is strictly respected under NDA.