iOS & Android App Design for Businesses

GREEN TECH designs and develops mobile apps for iOS and Android, from booking and ordering apps to customer loyalty apps. We handle everything end to end — user experience, development, system integration, publishing to the App Store and Google Play, and post-launch maintenance.

iOS & Android App Design for Businesses

How app design
benefits your business

A mobile app puts your brand in your customers' pockets, helping you engage more often, sell more conveniently and build a loyal base of returning customers.

Connect directly with customers

Push notifications let you send offers, appointment reminders and order updates straight to users' phones.

Increase repeat business

Reward points, membership tiers and personalized offers encourage customers to buy again and stay loyal.

Easy booking and ordering

Customers choose services, times and pay in just a few taps, easing the load on your front desk.

Lower operating costs

Booking, confirmation and customer care are digitized, cutting down on phone calls and manual record-keeping.

Understand customer behavior

In-app usage data shows which products customers like and when they buy, so you can fine-tune your sales programs.

Elevate your brand image

A smooth, easy-to-use app signals professionalism and helps your business stand out from competitors.

Our app design services at GREEN TECH

From customer-facing apps to internal apps for employees, we choose the right technology and feature scope so your app launches on time and runs reliably.

Mobile UI/UX design
GREEN TECH

Mobile UI/UX design

We research user behavior and craft user flows and interfaces that follow iOS and Android design guidelines.

Cross-platform app development
GREEN TECH

Cross-platform app development

We use Flutter or React Native so a single codebase runs on both iOS and Android, saving time and money.

Booking, ordering and loyalty apps
GREEN TECH

Booking, ordering and loyalty apps

We build appointment booking, shopping carts, payments, reward points and promotions tailored to your business model.

Admin panel and APIs
GREEN TECH

Admin panel and APIs

An admin panel for staff to manage orders, appointments and customers, plus APIs that connect to your existing sales software.

App publishing and maintenance
GREEN TECH

App publishing and maintenance

We prepare listings, submit to the App Store and Google Play, and keep your app updated for new operating system versions.

Our process

Our app design process at GREEN TECH

  1. 01
    Consulting

    Clarify the idea and goals

    We learn about your target users, core features and the business model your app needs to support.

  2. 02
    Design

    Design the interface and user flows

    We build a clickable prototype you can try on your phone and give feedback on before development begins.

  3. 03
    Development

    Build the app and back end

    We develop the app, admin panel and APIs in phases, with regular test builds for you to review.

  4. 04
    Testing

    Test on real devices

    We test across multiple device models, screen sizes and OS versions to ensure the app runs reliably.

  5. 05
    Release

    Publish to the app stores

    We prepare descriptions, screenshots and privacy policies and help resolve any feedback from the app review process.

  6. 06
    Maintenance

    Monitor and upgrade

    We monitor crashes, keep the app compatible with new OS versions and add features based on user feedback.

Why choose GREEN TECH?

Why choose app design services
at GREEN TECH?

1

Experience comes first

Every screen is designed so users can act quickly and understand it from the very first time they open the app.

2

One codebase, two platforms

Cross-platform technology lets you launch on iOS and Android at the same time, shortening timelines and reducing maintenance costs.

3

App review expertise

We prepare submissions that meet App Store and Google Play requirements from the start, minimizing rejections.

4

100% source code ownership

Source code, developer accounts and technical documentation are fully handed over, and the app is published under your company's name.

5

Direct contact with engineers

You work directly with the people who design and build your app, so feedback is received and handled quickly.

6

Regular, transparent demos

You receive a test build after each phase to try on a real phone and share timely feedback.

7

Green technology

Apps are optimized to be lightweight, battery-friendly and data-efficient, with back-end servers using only the resources they need.

8

User data security

Data encryption, secure authentication and an NDA protect both your idea and your customers' information.

9

Long-term warranty and maintenance

A post-launch warranty and maintenance plans keep your app compatible with new iOS and Android versions.

Contact us now!

Bring your brand to your customers' phones

Share your app idea, and GREEN TECH will advise on features, technology and a release roadmap for the App Store and Google Play — completely free.

Get an app design consultation

Our achievements

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Client satisfaction

Featured industries

GREEN TECH delivers services
tailored to every industry

Pricing for
app design

Pricing is based on the number of screens, features, target platforms and systems to integrate, so you invest exactly in line with your goals.

App design package

App design at GREEN TECH

Flexible pricing based on your needs

Ideal for businesses that want a mobile app for sales, bookings, customer loyalty or internal operations.

Get started
  • Custom UI/UX design for iOS and Android.
  • Cross-platform development with Flutter or React Native.
  • Admin panel and APIs connecting to existing systems.
  • Payment, push notification and map integrations.
  • Testing across multiple devices and operating systems.
  • Support for publishing to the App Store and Google Play.
  • 100% source code handover and post-launch warranty.

Technology stack

Technologies we use for app design

React / Next.js
Vue.js
Flutter
Tailwind CSS
Figma
TypeScript
Node.js
NestJS
Python
Laravel
.NET
PostgreSQL
MySQL
MongoDB
Redis
Supabase
Docker
Kubernetes
Google Cloud
Cloudflare
GitHub Actions
GitLab
Jira
Notion

Frequently asked questions

Answers to All
Your Questions

Answers to common questions about cost, timelines, technology and the publishing process when building an app with GREEN TECH.

Cost depends on the number of screens, feature complexity, target platforms and the systems to integrate. After the consultation, we send a detailed quote broken down by item.

Get in touch

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