Rast Mobile

Mobile App Development

Rast Mobile builds iOS and Android applications. We usually handle the mobile app together with the backend, integrations, admin panel, testing and release process it needs. We can build a new product, take over an existing app or support your team.

SteelOrbis mobile application home screen SteelOrbis mobile price chart screen RastCRM field application work-order screen
Published product screens SteelOrbis · RastCRM

References

Some of the teams we have worked with on mobile products

Public product examples

A few products we’ve built

Not every client project can be shown publicly. Below are a few examples of the mobile products we’ve built.

01 Steel market intelligence

SteelOrbis

SteelOrbis users can access market prices, charts, research and news from the mobile app.

  • Price data and charts
  • Research and market content
  • Mobile application
SteelOrbis market information screen SteelOrbis price chart screen
02 Field sales and service

RastCRM

Field teams manage customers, work orders and daily activity on mobile, while the office team works from the web panel.

  • Customer and work orders
  • Field teams
  • Web operations panel
View the product
RastCRM service operations dashboard RastCRM field application
03 Delivery operations

Courier Application

Couriers receive delivery tasks on mobile and update location, status and delivery records from the field.

  • Task and delivery management
  • Location and offline steps
View the product
Courier application assigned-task screen Courier application completed-task screen
04 Field service

Technician Application

Field technicians view assigned work orders and send forms, photos, signatures and status updates from mobile.

  • Work orders and offline use
  • Photos and signatures
View the product
Technician application assigned jobs screen Technician application service record screen

Mobile application development services

What can be included in a mobile app project?

The scope can include more than app screens. We can handle the iOS and Android app, backend and APIs, admin panel, integrations, offline use, testing, store releases and maintenance together.

01

Product definition and UX/UI

We clarify the users, main flows and first release. We can work from an existing design or shape the screens with your product team.

02

iOS and Android app development

We develop iOS and Android apps with native Swift and Kotlin, Flutter or React Native, based on the product and its existing technical context.

03

Backend, API and admin panel

We can connect the app to existing APIs or develop the backend services, authentication, payment integrations, notifications and operations screens it needs.

04

Enterprise integration and offline use

We integrate the app with ERP, CRM and other company systems. When the workflow requires it, data can stay on the device and synchronize after the connection returns.

05

Testing, release and maintenance

We test the main flows on real devices and can manage App Store and Google Play release preparation. After launch, we can continue with maintenance, updates and new versions.

Ways to work together

How can we support your mobile project?

Build a new application

We can shape the product scope and user flows, then build the mobile app, backend and required integrations together.

Take over an existing application

Yes. We can review the codebase of a live iOS or Android app, identify the first technical priorities and continue development.

Support an existing mobile team

We can support product and engineering teams with a defined scope in native, Flutter or React Native development.

Delivery process

How we work

We do not jump straight into development. We first clarify the need, then move the product forward in a structured way.

  1. 01

    Discovery

    We clarify the users, core flow, current systems and first release.

  2. 02

    Technical Design

    We define the mobile architecture, APIs, data flow and technology.

  3. 03

    UX / UI

    We design the journeys and screens the product needs.

  4. 04

    Development

    We build the app, backend, panel and integrations as one product.

  5. 05

    QA & UAT

    We test the main flows on real devices and run UAT with your team.

  6. 06

    Store Release

    We prepare signing, store listings and production releases.

  7. 07

    Continuous Improvement

    After launch, we maintain the app and plan the next releases.

Technology selection

Native, Flutter or React Native?

There is no single right technology for every project. We choose based on the product requirements, existing systems, device integrations, performance expectations and long-term maintenance plan.

  • Product requirements
  • Existing codebase and team
  • Performance expectations
  • Native SDK and device integrations
  • Release plans and development speed
  • Long-term maintenance

Native

Native mobile app · Swift / Kotlin

Useful when the product needs deeper access to platform-specific APIs, SDKs, device features or an existing native codebase.

Flutter

Flutter app development · shared product code

Useful when iOS and Android can share a large part of the product and one codebase can make development and maintenance more efficient.

Flutter app development

React Native

React Native development · React / TypeScript

Can be considered based on the existing technology stack, team, product architecture and platform integration requirements.

React Native development

Common questions

Mobile app development questions

We first clarify the users, main flows, existing systems and the first release. Technical design and UX/UI are followed by development, testing, acceptance and store release; after launch, we can continue with maintenance and new versions.

There is no reliable single duration for every product. The scope, number of platforms, design readiness, backend and integration work, offline needs and store process affect the timeline; after discovery, we prepare a release plan and estimate.

Cost depends on the release scope, iOS and Android requirements, design work, backend services, integrations, offline operation, testing and long-term support. We provide an estimate after understanding what already exists and what the first release must include.

Yes. We develop applications for both platforms using native Swift and Kotlin, Flutter or React Native, depending on the product and its existing technical context.

We look at the product, existing codebase and team, platform APIs, device integrations, performance expectations and maintenance plan. There is no default technology that fits every mobile app.

Yes. We can connect the app to existing APIs or build the required backend services, authentication, payment integrations, notifications and admin panel as part of the project.

Yes. We review the codebase, architecture, dependencies, backend and API connections, technical debt, signing and store setup, then agree on the work needed for the next stable release.

Yes, when the source system provides the required access. We integrate mobile apps with ERP, CRM, Dynamics 365, Dataverse and custom enterprise systems through APIs and controlled synchronization flows.

Yes, when the workflow requires it. Required data can be stored on the device, actions can wait locally and synchronization can run when the connection returns; not every product needs to work fully offline.

Yes. Signing, test releases, store information, build preparation and production submissions can be included in the project; the store accounts remain under your ownership and final approval comes from Apple or Google.

Yes. We can continue with maintenance, issue resolution, operating-system and framework updates, store requirements and new product versions after launch.

Yes. We can work from an existing design or help define user flows, wireframes and interface screens with your product team before development starts.

Let’s talk through your mobile project.

A new app, an existing codebase or one difficult integration—we can start with the current situation and the next release you need.