Your complete business idea or business model
Turn a new service, operating model or digital business concept into a connected mobile product, backend and administration experience.
MOBILE PRODUCTS BUILT FOR REAL USE
iOS and Android Mobile App Developers
Work with South African iOS and Android mobile app developers to turn a customer need, business workflow or product idea into a dependable custom app. Exceed IT helps with strategy, UI/UX design, development, backend systems, testing, store release and ongoing improvement.
Discuss your mobile appWhat do iOS and Android mobile app developers do?
iOS and Android mobile app developers plan, design, build and test applications for iPhone and Android devices. The work includes the interface people use, connections to backend systems and preparation for distribution through the Apple App Store and Google Play. Exceed IT brings these activities into one delivery process for South African startups and businesses.
A mobile app makes sense when customers, employees or partners need to access your business regularly, on the move or through device features. Whether you need a booking app, customer app, field service app, delivery platform or internal business app, we start by understanding the problem and the user journey the app needs to solve.
An app is a product, not only a set of screens
A dependable app often needs more than the software installed on a phone. Customer accounts may need a secure API and database. Your team may need an administration dashboard to manage users, content, orders or exceptions. Notifications, analytics, payments and integrations each introduce operating responsibilities. We scope this complete system so that the visible app and the work behind it fit together.
WHAT WE CAN BUILD
iOS and Android app development services
We shape the product around your users and operating model. The examples below describe common app categories, not fixed packages; the agreed features depend on your business rules and first-release priorities.
Customer and self-service apps
Accounts, bookings, orders, loyalty, support and personalised information in a convenient mobile journey.
Field service and workforce apps
Jobs, forms, photos, signatures, location-aware tasks and offline capture for teams working away from a desk.
Marketplace and on-demand apps
Connected customer, provider and administration workflows, including availability, status changes and payments.
Subscription and membership apps
Protected content, paid plans, recurring billing, account entitlements, notifications and access rules for subscription businesses.
MVP apps and startup products
A focused first release that tests the most important customer journey and business assumption before a broader product investment.
Real-time apps
Live status updates, messaging, dispatch information, collaborative activity and timely notifications built around meaningful business events.
GPS-based and location-based apps
Nearby services, geofenced actions, location-aware content, maps and routing experiences designed around clear user permission and privacy choices.
GPS tracking apps
Purposeful live or scheduled location tracking for deliveries, vehicles, assets or field teams, with agreed update frequency, background behaviour and battery use.
Logistics and tracking apps
Collection, delivery, proof-of-service and timely status updates for customers, drivers and dispatch teams.
What can be included in your mobile app project?
Your proposal identifies the deliverables included for your product. A project can combine:
- Mobile app strategy, user journeys, UI/UX design and a prioritised feature plan
- Custom iOS and Android app development using React Native and Expo where suitable
- Secure authentication, user roles, APIs and connected backend systems
- Offline functionality, push notifications and device integrations where required
- App testing, Apple App Store and Google Play release preparation
- Maintenance, support and future app development planning
Mobile features planned in context
Camera access, document upload, barcode scanning, biometrics, maps, location, push notifications and offline storage can make a mobile product useful. Each feature also needs permission handling, privacy decisions, fallback behaviour and testing. We include only the device capabilities that support a real user outcome.
Native, cross-platform or mobile web app?
The right approach depends on the experience, device capabilities, performance profile, team and long-term roadmap. We recommend a route after understanding those requirements rather than choosing a technology from a keyword.
| Approach | Often suits | Important considerations |
|---|---|---|
| Cross-platform app | Many business and consumer products that need iOS and Android from a shared product team. | Platform-specific behaviour, library support, native integrations and release testing still need deliberate attention. |
| Native iOS and Android | Products with demanding platform-specific experiences, deep device integration or an established native strategy. | Separate platform implementation can increase development, coordination and maintenance effort. |
| Progressive web app | Browser-accessible workflows where broad reach and simple distribution matter more than full native capability. | Device features, background behaviour and installation experience vary by browser and operating system. |
Native iOS development with Swift and Android development with Kotlin
Native development uses platform-specific tools: Swift and Xcode are common choices for iOS, while Kotlin and Android Studio are common choices for Android. This approach gives teams direct access to each platform's APIs and interface tools. It can suit specialist device integrations or an existing native product, but two implementations require coordinated feature work and testing. A demanding feature should be assessed individually before deciding that the whole app needs separate codebases.
How do Flutter and React Native compare?
Both support cross-platform mobile development. React Native uses React with JavaScript or TypeScript and renders native platform UI components. Flutter uses Dart and its own widget and rendering system. Both can connect to native platform capabilities. The practical choice depends on your existing code, required integrations, interface needs and the team maintaining the product. Shared code can reduce duplicated work, but each app still needs platform-specific checks.
React Native and Expo where they fit
We commonly use React Native and Expo to create iOS and Android applications from a shared foundation. Shared code can improve delivery efficiency and consistency, but it does not mean every detail is identical across platforms. We account for platform conventions, permissions, device testing and store requirements. If a product needs a different approach, we explain the trade-off before development.
Read our native versus cross-platform comparison for a more detailed planning discussion.
For technical background, see the official React Native introduction and Flutter architecture overview.
How do we design an app for iPhone and Android users?
Mobile UI/UX design starts with the task someone needs to complete: book an appointment, accept a job, scan a receipt or check an order. We map that journey before drawing individual screens, including what happens when information is missing or an action fails. A reviewable prototype helps you assess the flow before committing to development.
Platform conventions and accessible screens
An app can share a brand and features while respecting different platform expectations. Apple's Human Interface Guidelines and Google's Material Design provide useful references for navigation, controls and feedback. We plan readable text, sufficient contrast, clear touch targets and screen-reader labels, then check the agreed journeys on representative devices. Keyboard behaviour, text resizing and permission prompts also affect whether people can finish a task.
Validate the complete journey before adding features
For a booking app, choosing a time is only part of the experience. Users also need to understand availability, confirm the booking, recover from payment failure and find cancellation information. Reviewing these states early helps define a useful first release and reduces avoidable changes during the build.
Does your mobile app need a backend or API?
Apps with shared accounts, bookings, orders or business records usually need a backend: the server-side system that stores information and applies business rules. An API lets the iOS and Android apps communicate with that system. Both platforms can use the same backend, keeping account details and shared records consistent across devices.
Connecting an existing backend
If you already have software, we review API documentation, authentication, access permissions, test environments and usage limits before estimating integration. We check whether the API supports the complete mobile workflow, including slow responses, retries and expired sessions. An existing website or database does not automatically provide every API an app needs.
Building the backend and administration tools
If no backend exists, it can be scoped alongside the app. This may include a database, user roles, file storage, notification services and an admin dashboard. Your team may need to manage bookings, correct records or answer support queries. We agree which actions staff can take and which changes need an audit trail, so daily operations are part of the product plan.
MOBILE APP BUILT BY EXCEED IT
See our mobile development work
Fair Share is a bill-splitting product available on the Apple App Store and Google Play. Its mobile journey brings receipt capture, item assignment and sharing together, supported by a custom system and administration capability.
The project demonstrates mobile interface development, camera-assisted input, shared records and the backend thinking needed to operate a consumer product. Explore the public project page and current store links as verifiable examples of our work.
Explore the Fair Share mobile app →Our mobile app development process
Our app developers map users, complete journeys, business rules and operational needs before development begins. We use technologies such as React Native and Expo where suitable, while planning offline behaviour, permissions, APIs, payments, notifications, administration and release requirements from the start.
Discovery and mobile strategy
Define the users, business outcome, core journey and constraints. We examine device needs, connectivity, integrations, operational responsibilities and the evidence the first release should produce before recommending a platform.
User journeys and interface design
Map the complete task for customers, employees and administrators. Wireframes and interface designs let you review navigation, content, errors, permissions and important edge cases before development makes those decisions costly to change.
Architecture and development
Build the agreed app, backend and administration features in reviewable increments. Authentication, APIs, data storage, notifications and third-party services are developed around the product's actual workflows rather than added as disconnected features.
Testing on representative devices
Test critical journeys across agreed iOS and Android versions, screen sizes and network conditions. We check permissions, interrupted actions, failed integrations, accessibility and release acceptance criteria with realistic data.
Store release and ongoing improvement
Prepare store information and release builds, support submission to Apple and Google, and agree production monitoring and support. Store approval remains controlled by each platform. Usage and support evidence inform the next release.
Testing beyond the happy path
Mobile users change networks, deny permissions, close an app mid-task and use a wide range of devices. Acceptance testing should cover interrupted uploads, expired sessions, duplicate actions, failed payments, delayed notifications and synchronisation after an offline period where these scenarios apply. We agree supported devices and acceptance responsibilities in the project scope.
Offline apps, security and privacy
Design offline work as a workflow
“Works offline” needs a precise definition. We identify which records are available without a connection, what users can change, how attachments are queued and what happens when two people edit the same information. Connectivity indicators and understandable synchronisation states help users know whether their work is safely stored.
Protect accounts and business data
Security requirements depend on the data and risk involved. Common controls include secure authentication, role-based access, protected transport, server-side validation, safe credential storage and dependency maintenance. We minimise requested device permissions and plan account deletion, data retention and privacy information around the agreed product requirements.
How much does iOS and Android app development cost?
App development cost depends on the user roles, complete workflows, platform approach, integrations, data, administration tools and testing required. A focused booking app and a two-sided marketplace with payments, provider onboarding and dispute handling are different products even if both appear to have a similar number of screens.
We estimate after defining a useful first release. A proposal should distinguish discovery, design, application and backend development, testing and store preparation from recurring hosting, third-party services, store accounts, transaction fees and support.
- User journeys and roles: customers, staff, providers and administrators may each need different capabilities.
- Platform scope: iOS, Android, tablets and a web administration experience affect delivery and testing.
- Integrations: payment, identity, maps and business systems depend on external access and behaviour.
- Data and connectivity: migration, media, offline work and synchronisation introduce additional rules.
- Release readiness: content, policies, test accounts and prompt stakeholder feedback affect the schedule.
Read our app development cost guide and quote comparison checklist before comparing suppliers.
How long will your mobile app take to develop?
A useful schedule separates discovery, design approval, development milestones, user acceptance testing and store submission. Each milestone should have a reviewable outcome, such as an approved prototype or a working booking journey. Integration access, payment-provider setup, content and feedback from your team can affect the delivery date as much as coding. We identify these dependencies when scoping the project and agree what must be ready before the next stage begins.
How can you control the first-release budget?
Prioritise one complete user journey and the administration needed to support it. For example, a service-booking MVP might need availability, booking confirmation and staff management before loyalty rewards or advanced reporting. Agree acceptance criteria and record new requests separately so their impact on cost and timing is visible. Our MVP development service helps shape this first release.
App Store and Google Play release
Release preparation can include production builds, signing configuration, store listing requirements, screenshots, privacy details and review support as agreed. Apple and Google control their review processes and may request information or changes; no developer can guarantee acceptance or an exact review time.
Your organisation should understand who owns the Apple and Google developer accounts, source repository, backend, domain, analytics and third-party services. We agree access and handover responsibilities before launch so that the product is not dependent on an unclear account arrangement.
Maintenance after launch
Mobile operating systems, store policies and dependencies continue to change. Agree monitoring, backups, incident reporting, compatibility updates and how future features will be estimated. Support scope and response expectations should be documented rather than assumed.
How to choose mobile app developers
Compare potential partners against the same scope and ask for evidence relevant to your product. A useful evaluation covers more than a list of technologies.
- Relevant work: can you inspect a released app or a clear project overview?
- Product thinking: will the team challenge the scope and identify the complete user journey?
- Technical explanation: can it explain platform, backend, offline and integration trade-offs clearly?
- Quality responsibilities: which devices, scenarios and acceptance criteria will be tested, and by whom?
- Commercial clarity: what is included, excluded, assumed and treated as a scope change?
- Ownership and support: who controls the accounts, source code and data, and what happens after launch?
Exceed IT received TechBehemoths recognition for mobile app development in 2023 and 2024. Awards are one input; you should also review relevant work, speak to the proposed team and examine the delivery agreement. Learn more about Exceed IT and our published work.
Meet Jeandré van Zyl, Exceed IT's CEO and full stack developer, and read his published planning guidance. During your project discussion, ask who will handle design, development, testing and ongoing support, and how you will review progress with them.
iOS and Android app development questions
Do I need a backend before hiring mobile app developers?
No. We can scope the backend, APIs and administration tools together with your mobile app. If you already have a backend, share its documentation and available test environment so we can assess authentication, required endpoints and integration gaps before estimating the work.
Should we launch on iOS, Android or both first?
Start with the devices your intended users actually use. Launching on both platforms can suit a broad customer audience; a workforce app may initially need only the company's managed devices. A shared codebase can support a staged release, but each platform still needs testing and release preparation. We agree the launch order during discovery.
What should I prepare for a mobile app development quote?
Describe your users, their main task, required platforms and essential first-release features. Include any designs, existing API documentation, device requirements and budget or deadline constraints. Identify who will approve designs and test the app. You can start with a plain-language brief; we help clarify missing requirements before estimating.
Do you develop apps for both iPhone and Android?
Yes. We develop apps for iOS and Android and can use a shared React Native codebase where suitable. We determine which features can share code and whether any functionality requires platform-specific development.
Can you build a custom app for my business?
Yes. We build custom mobile apps around your business, users and workflows rather than forcing your requirements into a predefined template. This can include customer apps, booking systems, internal business apps, logistics platforms and other custom solutions.
Can my mobile app work without internet?
Yes, selected parts of an app can be designed to work offline. We plan which information is stored on the device, how changes are synchronised when connectivity returns and how conflicting updates are handled.
Can you integrate payments and other software into my app?
Yes. Mobile apps can connect to payment providers, APIs, existing business systems, databases and other third-party services where suitable integration methods are available.
Should I build a native or cross-platform mobile app?
It depends on the product. Cross-platform development can suit many iOS and Android business apps, while native development may suit products with demanding platform-specific requirements. We assess the user experience, device features, performance, integrations and maintenance needs before recommending an approach.
How long does it take to develop an iOS and Android app?
A reliable timeline requires an agreed scope. User roles, integrations, offline requirements, design decisions, stakeholder feedback, testing and app-store review all affect delivery. We define milestones after discovery rather than promising one timeline for every app.
Do you help publish apps to the Apple App Store and Google Play?
Yes. Store-release preparation and submission support can be included in the project scope. Apple and Google control their review processes, so approval and review timing cannot be guaranteed. We also agree who owns and manages the developer accounts.
Will we own the mobile app source code?
Source-code ownership, licences, repository access, developer accounts, backend access and handover documentation should be explicit in the project agreement. We agree these responsibilities before development; third-party tools remain subject to their own terms.
Can you maintain or rebuild an existing mobile app?
Yes, after an assessment. We review the available source code, dependencies, backend, store accounts, data and known issues before recommending targeted improvements, staged modernisation or a rebuild.
How much does it cost to develop an app in South Africa?
The cost of app development depends on the number of features, user roles, integrations, platforms and complexity of the workflows. We recommend defining the core first release before estimating the complete development cost.
Tell us what your app needs to make possible
For a useful first conversation, share the intended users, their most important task, required integrations, any existing designs or software, and your budget and timing constraints.
You do not need a finished technical specification. We can help identify the next useful planning step and the information needed before an estimate.