Custom mobile app development
Mobile App Development Services
for iOS and Android
SensViz plans, designs, builds, and improves custom mobile apps for startups and growing businesses. We shape the key user journeys, choose a suitable native or cross-platform approach, connect the app to the systems it needs, and prepare it for release and continued improvement.
From idea to a reliable product
Turn a useful idea into a mobile product people can rely on
A mobile app earns its place when it makes a repeated task easier, gives timely access to a service, or uses device capabilities that a browser experience cannot match. SensViz starts with that role, then defines the smallest useful release, the users and devices it must support, and the systems behind it.
Our work can cover product strategy, mobile UX, engineering, back-end and API integration, quality assurance, release preparation, and post-launch updates. This keeps product decisions, interface behaviour, engineering, and release work connected from the beginning.
What we build
Mobile app development services from product scope to release
Build the parts your mobile product needs and leave out the ones it does not. SensViz can support a new app, a focused MVP, a mobile extension of an existing platform, or improvements to an application already in use.
Product discovery and MVP scope
Define the target users, core task, success measures, priorities, and first release before development expands. The scope should be small enough to test and complete enough to be useful.
Mobile UX and interface design
Map key journeys, permissions, onboarding, empty states, errors, and recovery. Create screens and prototypes that follow platform conventions and remain usable across the supported devices.
iOS and Android development
Build for the platforms your audience uses, with the architecture chosen around the product, team capacity, device access, performance requirements, and maintenance plan.
Back-end and API integration
Connect accounts, business data, payments, notifications, content, analytics, and approved third-party services through defined APIs and access controls.
Testing and release preparation
Test critical flows on representative devices, prepare release builds and store materials, and address submission requirements using the agreed client information and accounts.
App modernisation and post-launch development
Improve an existing app's UX, performance, architecture, integrations, analytics, and release process, then prioritise updates using product feedback and quality data.
Platform approach
Native or cross-platform? Start with the product requirements
There is no single right architecture for every mobile product. The decision depends on the platforms, features, device access, performance needs, release plan, existing team, budget, and expected maintenance.
Cross-platform mobile development
A shared codebase can suit products whose iOS and Android experiences have similar features and release needs. It can simplify coordinated development, but it does not remove device testing, accessibility work, or platform-specific polish.Native iOS and Android development
Native development may suit applications with demanding graphics, advanced device features, strict performance requirements, or a need to follow each platform closely. It can also require separate platform work and maintenance.Mobile app or responsive web app
If the experience is mainly content, forms, or browser-based workflows and does not need store distribution, push notifications, offline access, or device hardware, a responsive web app may be the better first release. SensViz should recommend the simpler route when it meets the user need.What we can help you build
Mobile products designed around a clear job
Customer and member apps
Give customers or members a focused place to manage accounts, access services, book, buy, learn, receive updates, or complete repeat tasks.
Marketplace and service apps
Support discovery, profiles, bookings, communication, payments, order or service status, and the different journeys of buyers and providers.
Business and field apps
Bring data capture, approvals, task updates, forms, checklists, and operational information closer to the people doing the work.
Learning and coaching apps
Combine lessons, practice, progress, feedback, media, and reminders in an experience built for frequent use.
AI-enabled mobile apps
Add computer vision, recommendations, language interfaces, assistants, or other AI features when they improve a defined user task and can be tested properly.
Connected-device apps
Give users a clear way to set up, monitor, control, or understand data from sensors, equipment, or other connected products.
Quality and release readiness
Quality is part of the mobile product scope
An app is not ready because its main screen works on one device. Release planning should cover the complete user journey, supported devices, interruptions, permissions, connectivity changes, accessibility, privacy information, store requirements, and the signals needed to understand quality after launch.
Complete user journeys
Test sign-in, onboarding, loading, empty states, errors, retries, recovery, and account actions alongside the main feature.
Platform-aware and adaptive UX
Use familiar interaction patterns and check the interface across the supported screen sizes, orientations, text sizes, and input methods.
Performance and reliability
Set quality criteria for start-up, responsiveness, network behaviour, battery use where relevant, crashes, and other failures users can feel.
Privacy and security boundaries
Request only the permissions the app needs, protect sessions and stored data, review third-party components, and keep privacy declarations aligned with actual data handling.
Accessibility
Design and test labels, focus, contrast, target sizes, text scaling, motion, and assistive-technology behaviour as part of delivery.
Release health and measurement
Plan analytics, crash and responsiveness monitoring, release notes, staged rollout where appropriate, and a clear way to prioritise fixes and improvements.
How we deliver
A mobile app development process built around decisions and evidence
Define the product and first release
Clarify the users, core task, supported platforms, constraints, integrations, risks, and the outcome the first release should test.
Map and prototype the experience
Design the key journeys and product states, then test a prototype before costly assumptions become finished code.
Choose the architecture and build
Select a native or cross-platform approach, define the back-end and integrations, and develop the product in reviewable increments.
Test and prepare the release
Verify critical flows on representative devices, review permissions and privacy information, resolve release issues, and prepare the agreed store materials.
Launch, observe, and improve
Monitor product use and technical quality, address issues, and prioritise changes using evidence from users, analytics, and release health.
Relevant product experience
Application experience that connects software, data, and interaction
SensViz has worked on user-facing products that connect software, data, and interactive AI. These examples show relevant product and engineering experience for applications built around live input, feedback, and visual interaction.
Playano: AI-guided piano learning experience
Playano uses computer vision to provide interactive visual guidance for piano learning. The project demonstrates SensViz's experience combining a user-facing product, live input, and AI feedback.
Relevant capability: computer vision, live input, interactive guidance
AR Tile: computer vision and augmented reality application
AR Tile combines computer vision and augmented reality in an interactive application experience. It is a relevant example of software designed around visual input and on-screen guidance.
Relevant capability: computer vision, augmented reality, visual input
Why SensViz
Why businesses choose SensViz for mobile app development
Product decisions before feature volume
We define who the app is for, what they need to complete, and what the first release must prove before the backlog expands.
Design and engineering stay connected
User journeys, interface behaviour, architecture, integrations, and release needs are reviewed as parts of one product.
Architecture chosen for the app
Native and cross-platform approaches are compared against the actual device, performance, team, delivery, and maintenance requirements.
Software, data, and AI experience
SensViz can connect the mobile product to back-end systems, data workflows, and AI capabilities when the product genuinely needs them.
Quality considered before release
Critical journeys, devices, failure states, permissions, accessibility, and post-launch signals are included in the delivery conversation.
A clear path after launch
Support, maintenance, monitoring, ownership, and future feature work are defined according to the agreed project scope.
Related software and AI services
Build the rest of the product around the mobile experience
A mobile app may be one part of a larger product. Use these links to route readers to the service that matches the main job they need SensViz to handle.
Custom software development
For broader operational platforms, internal systems, integrations, and software that spans more than the mobile client.Custom AI SaaS development
For a complete multi-user or subscription product with web administration, billing, cloud services, AI features, and an optional mobile experience.Mobile app development questions
Mobile app development services can cover product discovery, UX and interface design, iOS and Android engineering, back-end and API integration, testing, release preparation, and post-launch development. The exact scope should match the product, users, platforms, and systems involved.
Yes, when the requirements suit a cross-platform approach. A shared codebase can support both platforms, but the app still needs platform-aware behaviour and testing on representative iOS and Android devices.
Choose after reviewing the app's device features, performance needs, interface requirements, delivery plan, existing team, budget, and maintenance expectations. Native development can be useful for demanding platform-specific work. Cross-platform development can suit products with closely aligned iOS and Android experiences.
A mobile app makes more sense when the product needs an installed experience, push notifications, offline use, frequent access, or device features such as the camera, location, Bluetooth, or biometrics. A responsive web app may be simpler when the experience is mainly content, forms, or browser-based workflows.
Timing depends on the number of platforms, user roles, features, integrations, design depth, offline behaviour, device testing, review cycles, and store requirements. A focused MVP is usually faster than a multi-role product with payments, real-time data, complex device access, or a new back-end. SensViz should provide an estimate after discovery.
The main cost factors are product scope, iOS and Android coverage, native or cross-platform architecture, design complexity, back-end work, integrations, payments, media or device features, testing, security needs, analytics, launch support, and ongoing maintenance.
Yes, when the existing systems provide suitable APIs or another approved integration path. Discovery should confirm the data, permissions, authentication, rate limits, error handling, and ownership of every connection before it is included in scope.
Yes. A mobile product can include computer vision, recommendations, language interfaces, assistants, prediction, or other AI features. The feature should solve a clear user task, and its quality, privacy, latency, cost, and fallback behaviour should be tested as part of the product.
SensViz can prepare release builds and support submission when that work is included in the agreement. The client should normally control the store accounts and provide the required legal, privacy, business, and product information. Apple and Google make the final review decisions, so approval cannot be guaranteed.
Post-launch work can include issue resolution, operating-system compatibility updates, performance improvements, analytics review, product changes, and new features. The maintenance and support scope should be agreed before launch so responsibilities are clear.
Working out the shape of a build? See mobile app project pricing for how we scope and cost the work.
Start with the product decision
Bring us the idea, the users, and the job the app must do
Tell us what people need to accomplish, which platforms matter, and what the app must connect to. We will review the product scope, device requirements, integrations, release needs, and the simplest useful first step before recommending an approach.
