An app your customers keep, on every phone they own. Android, iOS & cross-platform app development
Crafting reliable, consumer-grade mobile apps across iOS and Android from a single, efficient codebase.
Understanding the discipline
What mobile app engineering means for modern business.
A mobile app is a channel a business owns outright. It sits on a device people carry everywhere, it works whether or not they think to visit a website, and it is the only place a company can reach a customer or a colleague directly, with permission, in the moment that matters.
For most organisations it stops being a product and becomes infrastructure — the way orders are placed, the way work is dispatched, the way a service is actually delivered. Which is why the decision is rarely about an app at all. It is about which part of the business is moving onto the device.
Apps stopped being products and became operating channels.
Customers moved from calling to serving themselves.
Field and frontline work moved off paper and onto devices.
The phone became a revenue line, not a marketing cost.
Customer applications
The apps your market uses — ordering, booking, banking, tracking, support. They deepen a relationship you already have, through a channel no platform sits in the middle of.
Business applications
The apps your operation runs on — dispatch, inspection, approvals, stock. They replace paper and phone calls with a process that records itself as it happens.
Enterprise mobility
The apps your workforce carries — secure access to systems, data and approvals from wherever the work is, under the same controls IT applies to everything else.
The business case
Why businesses invest in mobile app engineering.
Returns that show up on the business, not on the engineering backlog.
- 01
Customer engagement
A direct, permissioned channel to the people who buy from you — one that reaches them in the moment rather than waiting for them to remember your website exists.
- 02
Operational efficiency
Work that travelled by phone call, paper form and re-keying becomes a single flow that records itself, so the cost of every transaction falls rather than the headcount rising.
- 03
Employee productivity
Frontline and field teams get what they need where the work happens, instead of returning to a desk to type up what they already did once.
- 04
Business growth
New services, new territories and new revenue models become possible once distribution stops depending on physical presence or a browser session.
- 05
Digital transformation
Mobile is usually where transformation becomes visible — the first place a legacy process gets re-designed rather than digitised exactly as it was.
What we build & capabilities
The things you can commission — and what each one ships with.
Defined engagements, one at a time: the thing itself on screen, and the capabilities that come with it.
01 / 09
Customer apps
The app your market lives in to buy, book, track and get help — a channel you own outright, reaching people on the device they never put down instead of waiting for them to remember your website.
Capabilities
- Accounts and profiles
- Ordering and booking
- Order tracking
- In-app support
- Ratings and reviews
- Loyalty and rewards
Business outcomes
Where the business is today, and what changes.
The operational difference, in the terms the business already measures itself in.
Cross-platform reach
Higher engagement & retention
Faster time-to-market
Industries we serve
The same discipline, shaped to your sector.
Regulation, procurement and legacy estate differ by industry — and the engagement is shaped around them, not in spite of them.
Our engineering process
How the engagement actually runs.
Every stage has an owner, an output, and a point where you can change direction.
01
Business discovery
Understanding what the app has to change commercially, before anyone discusses features.
02
Product strategy
Scope, sequence and success measures agreed — including what deliberately is not in version one.
03
UX research
The journeys people actually need to complete, mapped with the people who will use them.
04
UI design
Interfaces designed as a reusable system and reviewed on real devices, not in a slide.
05
Development
Built in short, reviewable increments, so progress is something you can hold rather than read about.
06
Quality engineering
Automated and on-device testing through delivery, across the handsets your users actually own.
07
Deployment
Store submission, phased rollout and monitoring, with a rollback path that has been rehearsed.
08
Continuous improvement
Release health, retention and feedback feeding the next iteration, by a team that already knows the code.
Why Sumago
Why teams choose Sumago.
The technology partner serious businesses build with — and stay with.
Business-first thinking
Every engagement starts from the commercial outcome, not the feature list. If an app is not the right answer, that gets said early.
Enterprise-grade engineering
Typed, tested and documented delivery under independently certified process — ISO 9001:2015 and CMMI Level 5.
Scalable architecture
Built for the load expected in year three, not only the load present at launch.
Human-centred design
Research before screens, and interfaces designed for the conditions people genuinely use them in.
Security by design
Authentication, storage and data handling treated as part of the build rather than a review before launch.
Agile delivery
Short increments, visible progress, and a point in every cycle where direction can change without penalty.
Cross-industry experience
Thirteen years across logistics, manufacturing, healthcare, public sector and financial services.
Long-term partnership
Support and improvement long after delivery, from the team that built it.
Technology ecosystem
Mainstream technology, chosen so you can hire for it later.
The stack is a means, not a position. It gets chosen against your constraints — and it stays maintainable by people who aren't us.
- Slack
