Cross-Platform App Development
We develop an eCommerce app for iOS and Android on a single codebase to launch on both platforms faster.
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eCommerce Application Development Services
Launch a high-performing eCommerce app in under 60 days - and turn it into a powerful channel for repeat sales and customer loyalty.
80
Certified Engineers
15
Countries Served
12+
Years of Experience
Full-Cycle eCommerce App Development Service
For eCommerce brands with high mobile traffic, an app can become a separate sales channel and a direct communication channel with customers. Convenient shopping, personalized offers, push notifications, and deep links help the brand stay close to customers and encourage repeat purchases. One of the challenges for retail businesses planning to launch on iOS and Android is lengthy and expensive parallel app development. That's why we deliver both platforms in under 60 days. A single codebase speeds up time to market, simplifies product maintenance, and allows the eCommerce app to evolve simultaneously on both platforms without the need to separately develop and maintain two products.
Up-to-Date Data
Catalog, prices, inventory, and orders are synchronized in real time, reducing the risk of showing customers outdated data.
Growth Without Rebuilding
The app’s modular architecture simplifies adding loyalty features, new payment methods, personalization, and support for new markets without completely rebuilding it.
One Product – One Team
We take responsibility for the entire eCommerce solution: from UX and backend to integrations, testing, and preparation for the App Store and Google Play.
When a Business Needs
an eCommerce App Developers
Companies turn to an eCommerce app when specific problems begin to directly impact sales and growth.
Challenge
Repeat customers have to go through the entire journey from product search to login and payment on the site every time.
Risk
Customers leave the catalog or checkout, and the brand loses sales from already acquired traffic.
Solution
We create a fast path in your app – with saved data, preferences, and simplified repeat purchases.
Challenge
After the first purchase, the brand loses direct contact with the customer.
Risk
The brand depends on paid retargeting and spends more on re-engaging customers.
Solution
We use push notifications, personalized offers, and deep links that take customers directly to the right solution or offer in the app.
Challenge
Customers make a single purchase and do not develop a habit of returning to the brand.
Risk
Repeat order frequency and LTV remain low.
Solution
We implement quick reordering, saved preferences, and loyalty scenarios within eCommerce solutions development.
Challenge
The business is concerned about investing in an app that customers will install and stop opening.
Risk
The budget is spent, but the new channel does not generate regular orders.
Solution
We design the app around real reasons to return – convenience, personalization, and exclusive features.
Challenge
Catalog, prices, inventory, and orders are distributed across multiple systems.
Risk
Customers see outdated data, while the team faces cancellations and additional manual operations.
Solution
We synchronize the app with CMS, CRM, ERP, payments, and other services in your eCommerce ecosystem.
Challenge
The company needs to launch on iOS and Android but does not have a dedicated mobile team.
Risk
Hiring and parallel app development delay the launch and increase the budget.
Solution
We take care of the entire cycle and develop the app for iOS and Android on a shared codebase, taking into account the requirements of each platform.
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Custom eCommerce Mobile App Development Services
A full range of services to launch and grow your product – from idea to scaling.
UI/UX Design Services
We create UI/UX for eCommerce apps with a focus on convenient shopping, customer retention, and conversion.
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Backend & API Development
We build the backend for eCommerce: APIs, business logic, catalog, user accounts, and integrations with payment services.
eCommerce App Integration Services
We integrate the eCommerce app with CMS, CRM, ERP, PIM, analytics platforms, and external services.
Mobile App Checkout & Payment Development
We make checkout fast and secure: we keep only the necessary fields and integrate payments via digital wallets.
Loyalty & Personalization Features
We encourage repeat purchases in the eCommerce app: bonuses and loyalty programs, personalized offers, push notifications, and quick reordering.
Want to Get Your Product to Market Fast?
We’ll develop your eCommerce app with a real strategy behind it, not just code.
One Connected
eCommerce Ecosystem
We create a connected eCommerce system that covers the key stages: from purchases in the eCommerce app to personalized communication and repeat sales.
Customer App
We combine convenient search, personalized recommendations, fast checkout, payments, and loyalty features in one eCommerce app to increase conversion and bring customers back.
Admin & Operations Panel
We combine product, price, inventory, order, and delivery management in one panel so the team can process orders faster and spend less time on manual operations.
Marketing & Loyalty Panel
We add segmentation, push campaigns, personalized offers, and bonus programs so the brand can bring customers directly back to the eCommerce app and increase repeat sales.
Connected eCommerce
App Development Solutions
Our eCommerce expertise goes far beyond code – we understand how the modern digital sales ecosystem works and build a solution that becomes an organic part of it.
AI-Powered Product Discovery
We implement AI-powered search and recommendations so customers can find the products they need faster, leave the catalog less often, and proceed to purchase more frequently.
Conversion Analytics & Experimentation
We set up eCommerce analytics and A/B testing so the development team can see where customers abandon the path to purchase and improve conversion based on data.
Omnichannel Shopping Journeys
We synchronize the cart, wishlist, profile, and orders across the eCommerce app, website, and other channels so customers can start a purchase in one channel and continue it in another.
Peak-Traffic Readiness
We prepare the backend, APIs, and critical integrations for sales and seasonal peaks to reduce the risk of failures and lost orders during peak demand.
Retention Engineering
We build personalized push scenarios, offers, and quick reordering in the eCommerce app to support repeat purchases and reduce dependence on repeated paid acquisition.
Secure Mobile Commerce
We protect accounts and customer data and set up secure integrations with payment providers to reduce the risk of compromise and maintain customers’ trust in the brand.
Advantages
What Sets Our eCommerce
Application Developers Apart
We support and design the architecture, develop, and bring your product to release on a turnkey basis.
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Revenue-Led Decisions
We prioritize features based on business goals, data, and customer behavior, assessing their potential impact on conversion, retention, and repeat sales.
Commerce Under One Roof
UI/UX, backend, QA, and DevOps work as one development team on your eCommerce app, so customer-facing features, backend, and integrations evolve in sync – without handoff losses between vendors.
Lower-Risk Releases
We build testing, staging, CI/CD, and monitoring tools into the development process from the start to reduce the risk of failures during updates.
Full Product Ownership
We provide the client with the source code, technical documentation, and knowledge required to independently develop and maintain the app.
Proven Partnership
55% of clients continue working with us or return with new projects, while the average client engagement lasts 30 months.
Our eCommerce App Development Process
From refining the idea to launching in the App Store and Google Play – and beyond, when decisions about app development are made based on data rather than assumptions.
01
Discovery & Strategy
We analyze business goals, customer behavior, existing systems, and competitors to define the value of your solution, MVP priorities, and success criteria.
02
UX/UI & Prototyping
We design the journey from product search to repeat purchase and validate the logic of key scenarios with an interactive prototype before application development begins.
03
Architecture & Integrations
We plan the backend, data flows, and integrations with CMS, CRM, ERP, payment, and logistics services so that products, prices, and orders are automatically synchronized between the app and the eCommerce system.
04
App Development
We develop app functionality in short sprints and regularly demonstrate the results so the client can see the progress and adjust priorities in time.
05
QA & Store Preparation
We test checkout, payments, synchronization, stability, and performance across different devices and prepare the eCommerce app for submission to the App Store and Google Play.
06
Launch & Growth
We launch the solution, monitor its stability and customer behavior, and plan the next updates based on data.
Our team
Certified Application
Development Specialists
The eCommerce app is developed by a team of engineering specialists, UX/UI designers, QA experts, and a product manager who work together to deliver the product.
CEOAgness
HRDYevhenii
CTOAndrew
Project ManagerOlha
Full Stack DeveloperMarko
Full Stack DeveloperDmytro
CMOSolomiya
Content LeadMaksim
CSOOlga
Team LeadYehor
Project ManagerYuliia
Project ManagerOlga
BDMPavlo
Full Stack DeveloperYurii
Team Lead | DevOpsOleg
Backend DeveloperMaks
Team Lead | DevOpsOleg
QA EngineerElina
Full Stack DeveloperVitalii
RecruiterOksana
Full Stack DeveloperOleksandr
Project ManagerYeva
Full Stack DeveloperAnastasiia
UI/UX DesignerVladyslav
Tender ManagerYurii
Head of DeliveryKristina
Business AnalystOlena
Technologies We Use
to Build Your eCommerce App
A proven stack for mobile, backend, and integrations that handles loads ranging from daily traffic to peak sales periods.
Mobile Application Development
React Native
Flutter
TypeScript
Dart
Backend
PHP
Laravel
Node.js
TypeScript
Databases
PostgreSQL
MySQL
MariaDB
Redis
APIs & Integrations
REST
GraphQL
Webhooks
Payment Gateways
CRM/CMS integrations
ERP
Security
OAuth 2.0
JWT
Encryption
Secure Data Storage
Cloud & DevOps
Docker
AWS
GitHub Actions
Kubernetes
Monitoring & Analytics
Firebase
OpenTelemetry
Grafana
Sentry
Companies That Trust Us
First-Hand Client Experiences
Learn how we solve business challenges and what results our partners achieve.
They adapted quickly to changing priorities.
The team quickly understood our goals and translated them into practical solutions. Their ability to adapt and move fast made the collaboration smooth and highly productive.
Joseph F.
Ozeaon | Portugal
Joseph F.
Ozeaon | Portugal
Worked in sprints
Zentix delivered their development work on time, which was an excellent start for the client. The team worked in sprints, updated the client weekly, and delivered tasks on schedule.
Andrew R.
RaDevs | Estonia
Andrew R.
RaDevs | Estonia
Responsiveness and dedication
Responsiveness and dedication to delivering high-quality services were outstanding.
Maria А.
ARGUNOVA | Ukraine
Maria А.
ARGUNOVA | Ukraine
They delivered great results and provided useful support throughout the project."
They delivered great results and provided useful support throughout the project.
Andrey H.
Bestclevers | UK
Andrey H.
Bestclevers | UK
Their e-commerce expertise made a real difference
Zentix helped us build and launch our e-commerce platform with great attention to detail. The team was responsive, professional, and easy to work with throughout the entire process.
Amir B.
Servicom | Sweden
Amir B.
Servicom | Sweden
The team delivered exactly what we needed
The team delivered exactly what we needed — high-quality solutions and smooth collaboration from start to finish.
Alex L.
Wavory | Cyprus
Alex L.
Wavory | Cyprus
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Have an eCommerce App Idea but Don’t Know Where to Start?
Discuss it with our application development team – we won’t just estimate the scope of work, but design an architecture that can support your business growth.
FAQ
How do you know whether your business needs a mobile app rather than improvements to the mobile version of your website?
An app solution makes sense if the brand has significant mobile traffic, repeat customers, and regular interaction scenarios: repeat orders; a loyalty program; personalized offers. If the problem is only with navigation or checkout, improving the mobile version of the website may be enough.
How much does eCommerce app development cost, and which decisions have the biggest impact on the budget?
The cost of application development depends on the scope of functionality, the number of integrations, and backend complexity. Payments, synchronization with the eCommerce system, and custom loyalty features have the biggest impact on the budget.
How can you estimate the potential ROI of an app before starting full application development?
Before starting, we analyze mobile traffic, conversion, average order value, repeat order frequency, and projected costs to estimate the app’s potential ROI across several scenarios.
Can the app be connected to our current eCommerce platform without replacing it?
In many cases, a new solution can be integrated with the existing eCommerce platform through available APIs without replacing it entirely.
How can existing customer accounts, order history, bonuses, and wishlists be transferred to the app?
We synchronize this data through integration with your system during application development so customers can see their familiar history immediately after logging into the app.
How do you verify whether customers will actually use the app after installing it?
We research customer scenarios, test key hypotheses on a prototype, and identify features that give customers reasons to return. After launch, we analyze retention, conversion, and feature usage.
Who will own the source code, design, documentation, and rights to the finished app?
The terms for transferring rights to the app, code, and documentation are defined in the contract and agreed with the client within the scope of the specific project.
Can you work together with our internal eCommerce or IT team?
Yes, we integrate into the client’s processes and can develop the app together with the internal team or individual experts on the client’s side.
What happens if the App Store or Google Play rejects the app during review?
We analyze the reason for rejection, revise the app according to the store’s requirements, and support the resubmission process. The final decision on publication is made by the App Store or Google Play.
How do you protect customer and payment data and comply with GDPR and payment provider requirements?
We implement encryption, access control, secure storage, and data minimization. Specific GDPR and payment security requirements are determined based on the types of data, markets, processing scenarios, and payment architecture.
