When the use is frequent and related to the phone
- Push notifications and repeat access
- Camera, files, location or maps
- Fast login and recurring services
- Offline, sync, payments or subscriptions
Flutter development for Android and iOS
Android and iOS mobile apps built around users
We develop Flutter mobile apps for startups and enterprises, connected to the product's backend, API and services, from Mobile MVP to release and continuous development.
From3.990 €+ VAT
Indicative price for a well-defined Mobile MVP. New backend, integrations, payments, offline operation and publishing can significantly change the estimate.
- Android and iOS
- Flutter
- Backend and API
- Push notifications
- Preparation for publication
Mobile products
A mobile app must solve a real need, not just exist in stores
Users keep an app when it gives them quick access to an important feature, relevant information, useful notifications, or a better experience than a mobile website.
We can build the Flutter app, backend, API and admin panel or integrate the mobile component with an existing system after a technical audit.
Choosing the right solution
Not every project needs an app installed
Before the estimate we analyze whether the product should be launched directly as a mobile app or if it is more efficient to start as a web app or MVP.
When validation and occasional access are enough
- Mainly informational content
- Rare use and no notifications
- No device-specific features
- Budget focused on product validation first
Mobile technology
A codebase for Android and iOS where the project allows
Flutter can reduce platform differences and maintenance costs by maintaining a consistent interface and coordinated releases.
- One main codebase
- UI adapted to the conventions of each platform
- Integration with native APIs and services
- Centralized maintenance
Hardware access, payments, permissions, and store requirements may require separate implementations for Android and iOS.
Architecture
The application installed on the phone is only one of the components
Flutter app
Interface, navigation, states, local cache and device features.
API
Communication, validation, authentication and synchronization.
Backend and data
Users, business rules, transactions and security.
Administration
Content, notifications, reports, payments and support.
Infrastructure
Server, storage, monitoring, email and backup.
If a suitable backend and API already exist, the application can integrate with them after technical verification.
Problems solved
From fragmented experiences to a connected mobile product
We connect the user with important services, data and actions through a flow adapted to the phone.
The goal is ease of use, controlled access, and a foundation that can evolve after launch.
Inappropriate streams for phone
Users go through too many steps or depend on a web interface that is difficult to use on mobile.
Lack of useful notifications
Statuses, appointments and important messages do not arrive at the right time.
Information out of sync
The application, backend and external systems do not work on the same source of truth.
Product difficult to update
Dependencies, builds and integration with stores are not managed predictably.
Suitable for
For frequently used products and services from your phone
From validating an MVP to mobile scaling a SaaS platform.
When it's not appropriate
A mobile app should not be built just for in-store presence
We do not recommend development when the idea is not validated, the use will be rare, a website completely solves the need, or there is no budget for backend, publishing and maintenance.
Clarify the right solutionTypes of applications
Mobile solutions adapted to the product and the way of use
Mobile MVP
The first version to validate a main stream.
Customer Application
Account, services, documents, notifications and statuses.
Mobile extension for SaaS
Quick access to the features of an existing platform.
Internal application
Operations, Field, Forms and Reporting.
Appointments and orders
Calendar, bookings, payments and communication.
Application upgrade
Audit, update, redesign and new features.
Features and deliverables
What can include a mobile project made by Docodex
We select components in specifications based on users, data, devices and risks.
Product and experience
- Discovery, MVP, user flows and wireframes
- UI/UX custom and design system
- Onboarding, profile and dashboard
- Multiple languages and accessibility
Data and device
- Forms, files, camera and gallery
- Location, maps and calendar
- Local cache, offline and sync
- Search, filters and documents
Communication and commercial
- Push notifications and deep links
- Chat, messaging and emails
- Payments, subscriptions and orders
- Analytics and crash reporting
Backend and delivery
- Django, REST API and PostgreSQL
- Administration, roles and permissions
- Testing, staging and builds
- Ready for App Store and Google Play
Launch strategy
The first version must validate the main stream
Essential for first validation
Onboarding, login, profile, central flow, essential data, basic notifications, backend and minimal administration.
Extension after validation
Modules, payments, subscriptions, chat, maps, offline, reports, roles, automations and enterprise integrations.
Integration
Existing backend or custom built backend
An existing system must be verified before we estimate mobile integration.
- API documentation and stability
- Authentication, permissions and security
- Data structure and technical limitations
- Responsibility for backend changes
Where there is no suitable backend, we can build Django, REST API, PostgreSQL and admin panel.
Mobile features
Permissions, payments, notifications and offline are designed separately
Device and permissions
Camera, Gallery, Files, Location and Biometrics, requiring only justified access.
Payments and subscriptions
The solution depends on the product, country, and Apple and Google rules; feasibility is checked beforehand.
Push notifications
Relevant messages, preferences, deep links and token management, without the promise of absolute delivery.
Offline and Sync
We define local data, allowed actions, and rules for post-reconnection conflicts.
Analytics and crash reporting
We measure activation and critical flows without submitting personal data to analytics tools.
Portfolio
Hands-on experience in a real mobile product
AvocatAlert Mobile
Flutter application connected to the web platform, backend and API, developed and operated by Docodex.
- Accounts and Login
- Notifications and deep links
- Data synced via API
- Builds, Publishing and Continuous Development
Process
From idea and streams to publishing and updates
- Initial discussionProblem, users and budget.
- DiscoveryFeeds, screens, backend and API.
- Defining the MVPFirst version and future stages.
- Specifications and offerDeliverables, cost and acceptance.
- UX and UINavigation, screens and states.
- Backend and APIData, rules and integration.
- Flutter developmentMobile streams and features.
- Internal testingAndroid, iOS and critical cases.
- Testing with the clientBuilds and feedback.
- Preparation for publicationSigning, Catches and Listings.
- ReviewSending through customer accounts.
- ReleaseMonitoring and stabilization.
Testing and accountability
Quality is checked on real streams, devices and builds
Complete error-free or compatibility with any device cannot be guaranteed. We reduce risk through checks proportional to the project.
Streams and states
Authentication, forms, API, notifications, payments, offline and error scenarios.
Android and iOS
Supported devices and versions, permissions, builds and background behavior.
Crash reporting and stabilization
Post-launch monitoring and remediation of agreed functionality issues.
Publishing in stores
We are preparing the application for review, but the decision belongs to Apple and Google
Customer Accounts
We recommend that the owner company owns Apple Developer and Google Play Console.
Build and listing
Signatures, identifiers, captures, descriptions, policies and technical information.
Review and comments
We respond to the agreed technical requirements, without guaranteeing approval or the term of the review.
Developer account fees, external services and platform costs are separate unless the offer explicitly states otherwise.
Indicative packages
Mobile MVP, Growth or Business
The final offer is determined after reviewing the application, backend, integrations and publishing process.
Mobile MVP★
From €3,990+ VAT / project
For startups and companies that want to validate a well-defined main stream.
What may include:
- Initial analysis and definition of the MVP
- Flutter app for Android and iOS
- About 6–10 functional screens
- Onboarding and authentication
- User profile and a main stream
- Forms and validations
- Existing API integration or limited backend
- Basic notifications and analytics
- Simple admin panel
- Test builds
- Technical preparation for publication
- 30 days stabilization support
Mobile Growth★
From €6,990+ VAT / project
For companies that need a complete application, connected to the backend, with users and modules.
What may include:
- Everything relevant from Mobile MVP
- Custom UI/UX
- About 10–20 functional screens
- Accounts, roles and dashboard
- More modules, search and filters
- Upload images or documents
- Push notifications and deep links
- Django backend and REST API
- Full admin panel
- Analytics and crash reporting
- Staging and testing critical flows
- 45 days stabilization support
Mobile Business★
From €11,990+ VAT / project
For companies and SaaS products that need a complex and scalable application.
What may include:
- Everything relevant from Mobile Growth
- Expanded architecture and more roles
- Custom backend and extended API
- Payments, subscriptions or marketplace
- Chat, Maps and Location
- Offline operation and synchronization
- Documents, reports and more languages
- Advanced notifications and integrations
- Administration, Auditing and Logging
- Analytics and monitoring
- Documentation and training
- 60 days stabilization support
Packages and features are indicative. The costs of developer accounts, store fees, infrastructure, processors, notifications, SMS, maps, storage and other external services are separate.
Quick comparison
Compare packages
We recommend the right structure for you after we understand the users, flows and backend.
| Appearance | PackageMobile MVPFrom €3,990 + VAT / project | RecommendedMobile GrowthFrom €6,990 + VAT / project | PackageMobile BusinessFrom €11,990 + VAT / project |
|---|---|---|---|
| Positioning | Mobile MVP | Recommended | Mobile Business |
| Price | From €3,990 + VAT / project | From €6,990 + VAT / project | From €11,990 + VAT / project |
| What does it include? | Initial analysis and MVP definition, Flutter app for Android and iOS, About 6–10 functional screens, Onboarding and login | Everything relevant from Mobile MVP, custom UI/UX, About 10–20 functional screens, Accounts, roles and dashboard | Everything relevant from Mobile Growth, Extended Architecture and More Roles, Custom Backend and Extended API, Payments, Subscriptions or Marketplace |
| Suitable for | For startups and companies that want to validate a well-defined main stream. | For companies that need a complete application, connected to the backend, with users and modules. | For companies and SaaS products that need a complex and scalable application. |
Estimate and Responsibilities
What influences the price and what the customer must provide
- Screens, flows, roles and the custom UI layer
- Backend, API, data, payments and integrations
- Offline, notifications, testing and publishing
Customer provides product manager, content, business rules, developer accounts, access to services, test data and timely feedback.
New requirements after specification approval may change the budget and timeline.
After publication
Launch is the beginning of the actual period of use
Stabilization covers delivered and agreed functionality. New versions of Android, iOS, Flutter, SDKs, and external services require ongoing maintenance.
Technology
Flutter for mobile frontend, Django for backend and API
We choose the architecture based on functionality, device integration, security and operating costs. Not all technologies are necessary in every project.
Already have an app?
We can audit, update and extend an existing mobile project
Before estimating we check your code, architecture, dependencies, builds, backend, API and account access.
- Flutter audit and local configuration
- Updating SDKs and dependencies
- Crashes, refactoring and redesign
- New features and release releases
Request a quote
Need a mobile app?
It describes the users, the main flow and if there is already a backend. We help you define the MVP and the right stages.
A Mobile MVP starts from €3,990 + VAT, Mobile Growth from €6,990 + VAT, and Mobile Business projects from €11,990 + VAT.
An MVP can take 40–65 business days, a full app 65–110 days, and a complex project can exceed 200 days.
Yes. Flutter allows for a common code base, with separate adaptations where platforms require it.
Flutter is the main technology used by Docodex for Android and iOS cross-platform applications.
Applications with users, data, notifications or payments usually need backends and APIs.
Yes. We can develop Django backend, REST API, PostgreSQL and admin panel.
We can prepare and submit the application through the client's accounts, without guaranteeing approval or the duration of the review.
We recommend that the owning company has Apple Developer and Google Play accounts.
No. Account fees and platform costs are separate unless the offer says otherwise.
Yes, for statuses, messages, documents, appointments and other relevant events.
Yes, for clearly defined functions with rules for local storage and synchronization.
Yes, depending on what is sold, country and store rules.
Yes, where appropriate and the necessary accounts are set up.
Yes. We can integrate camera, gallery, files, maps and location.
Yes, with the right backend, infrastructure and moderation rules.
Next step
Have a mobile app idea or want to expand an existing product?
Tell us who will use the app, what they need to be able to do, and if a backend already exists. We help you define the MVP and development stages.
Mobile Apps · Flutter · Android · iOS · Dart · Django Backend · REST API · Push Notifications · Firebase · Publishing · Maintenance