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Custom mobile commerce

Custom mobile commerce apps, built for your brand, owned by you.

Native iOS + Android, wired into your product, content, order, inventory, and payment systems. Engineered to last. Yours to keep.

26 yrs
enterprise-delivery pedigree
2 / 1
brand apps, one codebase
5
core systems integrated
2,000+
automated tests
100%
of the code is yours
What it does

Everything your customers expect, in their language, online or on a weak connection.

Catalog & search

Fast browsing and search across a multi-million-product catalog.

Cart & checkout

A smooth, secure path from cart to confirmed order.

Real-time tracking

Live order and shipment status, updated as it happens.

Secure phone + OTP sign-in

Frictionless one-time-passcode login your customers trust.

Wishlist & saved addresses

Personal lists and details that carry across sessions.

Local payments & wallet

Regional payment methods, wallets, and cash-on-delivery.

Push notifications

Timely, relevant messages that bring customers back.

Advanced

AI virtual TryOn & in-app capture

Next-gen product experiences, built right into the app.

Proof, the build

Proven on a real, full-scale platform.

Cosys designed and built a complete commerce app on one shared, formally-designed platform: one codebase engineered to power multiple brands, a full commerce backend (product, content, orders, inventory, payments), a multi-million-product catalog, and advanced features like real-time tracking and AI TryOn. Engineered to a formal IEEE-1016 standard with 2,000+ automated tests and reviewed against the AWS Well-Architected Framework.

In final pre-launch hardening, proven end-to-end on live data.
2
brands
1
codebase
5
systems
2,000+
tests
Integration

The app is the window; your platform is the engine.

Everything behind one secure, authenticated API, add a web storefront later and it reuses the same backend.

Your app
Presentation
Domain
Data
Secure surface
Secure authenticated API
Your platform systems
PIM / DAM
CMS
OMS
ERP
Payments
Search
Connects to
What it powers
PIM / DAM
Product data, specs, and rich media across the catalog.
CMS
Merchandising, campaigns, and editorial content.
OMS
Orders, fulfilment, and real-time shipment tracking.
ERP
Inventory, pricing, and stock availability.
Payments
Local methods, wallets, and cash-on-delivery.
Search
Fast, relevant discovery across millions of products.
How we build it

Discovery and design first,
never skipped to rush the build.

01
Discovery
2–4 weeks
02
Design
Prototype & plan
03
Build
Agile sprints
04
Test
CI + coverage gates
05
Launch
App-store release
06
Support
↺ next release
Discovery 2–4 wks
First release 2–4 mo
Full app 4–9 mo
We reply within one business day

Most agencies assert quality. Cosys shows it.

We show the architecture, not a logo wall.

Real diagrams, real standards, the engineering is on the table.

Quality is enforced by CI, not promised.

2,000+ automated tests and coverage gates on every build.

You own everything and can walk away.

Full source and IP transfer on delivery. No lock-in, ever.

Enterprise pedigree, modern build.

26 years of delivery discipline, on a current, documented stack.

Engineering depth

Engineered to a standard, and we'll show you.

IEEE-1016 design documents + architecture decision records
Architecture enforced by lint on every build
2,000+ tests, unit, widget, integration, golden, with CI coverage gates
Errors-as-values, predictable, handled failure paths
Your proprietary logic is access-controlled
Modular
Independent feature modules on one shared core.
Catalog
Cart
Orders
Account
Payments
Shared core
networking · auth · storage · design system
Inside one feature
A clean layered flow, UI never touches data directly.
Presentation
UI
Domain
business rules
Data
APIs & cache
Core, shared foundations for every layer
Client
Flutter · native iOS + Android, one codebase
Backend
AWS AppSync + Cognito · one secure API
Quality
CI · 2,000+ tests · golden visual tests
Cloud
AWS · Well-Architected reviewed
Security, payments & compliance

Built to be audit-ready.

ISO 27001 & SOC 2, pending approval
Device attestation

Requests come from a genuine app on a trusted device.

Pinned TLS

Traffic is locked to your servers, no interception.

PCI DSS SAQ-A

Card data never touches the device.

Secrets in secure store

Credentials live in the OS-level secure enclave.

PII-scrubbed observability

Full monitoring with personal data stripped out.

Audit-ready

Traceable, documented, and ready for review.

Operate it like a product

Ship, adjust, and stay resilient, after launch.

Feature flags & controlled rollout

Ship dark, release gradually, kill instantly, no store release needed.

Resilient real-time

Live connections auto-reconnect and recover on flaky networks.

Honest offline

Last-seen data or a clear message, never a blank screen.

Offline-first data flow
Request
Cached data fresh?
YES
Show instantly
NO
Fetch network
On failure → last-seen data or a clear message
How you start

Start with a paid Discovery & Design sprint.

From CA$9,000, 2–4 weeks, and walk away with a clickable prototype, a technical plan, and a real estimate.

Start here

Discovery & Design sprint

A clickable prototype, a technical plan, and a real estimate, before any build commitment.

from
CA$9,000
2–4 weeks

Fixed-scope build

A defined app, a defined price, scoped after Discovery.

Dedicated team

An embedded Cosys squad building continuously alongside you.

Staff augmentation

Senior engineers who plug into your existing team.

Get an Estimate Every build is scoped after Discovery, a clear estimate before any commitment.
After launch

We stay on after go-live.

App-store submission
App-store optimization (ASO)
Monitoring & analytics
Maintenance plans
90-day defect warranty
Ongoing iteration with an SLA
Ownership, IP & confidentiality

NDA-first. You own the source and IP, it transfers on delivery. No lock-in, and your sensitive logic stays access-controlled. Backed by a 90-day warranty.

NDA-first You own source & IP No lock-in Access-controlled logic 90-day warranty
FAQ

Questions, answered.

Which platforms do you build for?
Native iOS and Android from a single shared codebase, so both apps ship the same features and stay in sync, one build, two branded apps.
Do we own the app and the code?
Yes. You own 100% of the source and IP, and it transfers to you on delivery. The stack is mainstream and documented, so there is no lock-in, you can take it anywhere.
Can it integrate with our existing systems?
Yes. Your PIM/DAM, CMS, OMS, ERP, payments, and search connect behind one secure, authenticated API. Add a web storefront later and it reuses the same backend.
How do you protect our IP and sensitive logic?
We work NDA-first, your proprietary logic is access-controlled, and you hold the source. Confidentiality is built into how we engage, not bolted on.
How long does it take?
Discovery is 2–4 weeks. A first release is typically 2–4 months, and a full app 4–9 months, depending on scope. We reply within one business day.
How much does it cost?
Every build is scoped after Discovery. A Discovery & Design sprint starts at CA$9,000, and you get a clear estimate, with a clickable prototype and technical plan, before any build commitment.
What happens after launch?
App-store submission, ASO, monitoring and analytics, maintenance plans, a 90-day defect warranty, and ongoing iteration under an SLA.
Is it secure and compliant?
Device attestation, pinned TLS, PCI DSS SAQ-A payments (card data never touches the device), and secrets in the OS secure store. ISO 27001 and SOC 2 are pending approval.

Ready to build an app you actually own?

Start with a discovery call, you'll leave with a clear sense of scope and cost.

Book a Discovery Call
We reply within one business day.