Mobile App Development
Utility, lifestyle, and productivity apps for iOS and Android. We build native and cross-platform solutions, handling everything from store submission to post-launch analytics and updates.
Mobile app development servicesTechnology company · Hanoi, Vietnam
We build and operate mobile apps, e‑commerce technology, and marketplace storefronts.
CS Group designs, develops, launches, and operates digital products both for our internal brands and strategic partners: utility and lifestyle apps on iOS and Android, tools for online sellers, and storefronts on Amazon, Etsy, and Walmart.
What we do
Three core areas, one standard: built to go live and perform.
E-Commerce Technology
Tailored software for multi-platform sellers: product and listing management, order and inventory synchronization, automation, and reporting.
E-commerce technology for sellersMarketplace Operations
End-to-end storefront management on Amazon, Etsy, and Walmart - covering product research, listing optimization, advertising, fulfillment, and daily customer support from Hanoi.
Selling on Amazon, Etsy, and WalmartHow we work
Lean team. Direct contact. Products that stay live.
We operate what we build
Our apps and storefronts run 24/7. We proactively monitor crash rates, platform review cycles, and policy updates across the App Store, Google Play, and digital marketplaces to fix issues before users notice.
Privacy by design
Every product ships with full compliance: clear privacy policies, platform-standard consent flows, and data practices that strictly match store listing declarations.
Direct communication
You collaborate directly with the core team building and operating your product - no ticket queues or account managers. Every inquiry receives a response within two business days.
How a project runs
From initial concept to an operating product.
- 01
Scope
Share your product vision via email. We reply with clarifying questions followed by a detailed written scope.
- 02
Design
Review and approve user flows and interactive prototypes before coding starts. For marketplaces: sample listings and an initial batch strategy.
- 03
Build
Development moves in two-week sprints, delivering a functional build at the end of each cycle.
- 04
Launch
We manage store submissions and resolve any platform review feedback.
- 05
Operate
Continuous monitoring, regular updates, and performance reporting on an agreed schedule.