AfterSell Post Purchase Upsell

CatalogAce PDF Catalog Print

ConvertMax

Customization Platform

Ecomartists

Geolocation & Markets - Selecty

Grammar Content Assistant

Intiaro

Karstgoods

Lably - Product Labels & Badges

LangShop AI Language Translate

MUSE Cosmetics

Nifty Bridge

Optimal AB Testing

Push Down & Hide Out Of Stock

Quicky Trending Bars & Banners

React Flow Workflow Automation

ReSell Post Purchase Upsell

Retter Heatmaps & Replay

Return Flag

SmartCarts

SMS Europe App

Stored micro‑sites on demand

Stylefy Checkout Branding UI

UpCart - Slide Cart Drawer

UpsellPlus

VAST Sports

AfterSell is a top-rated Shopify app developed to increase post-purchase revenue. Nowadays, the app is trusted by over 40,000 brands, helping them maximize the average order value while improving customer retention. Working continuously over the project, our team has developed version 2.0, enhancing performance and user satisfaction. It’s also important to note that the app earned the Built for Shopify badge, marking its seamless integration, high performance, and adherence to Shopify’s best practices.

AfterSell – Shopify Post-Purchase Upsell

Shopify

AfterSell is a top-rated Shopify app developed to increase post-purchase revenue. 

TypeScript

JavaScript

MongoDB

Express.js

React.js

Node.js

Shopify Polaris

UpCart is a powerful Shopify app designed to elevate the cart and checkout experience. By offering customizable options and sales-enhancing features, it helps merchants engage customers and drive more revenue.

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UpCart is a powerful Shopify app designed to elevate the cart and checkout experience. 

KOA framework

Apollo GraphQL

UpsellPlus is a Shopify app that enhances the checkout, cart, and post-purchase experience, allowing merchants to boost their Average Order Value (AOV) through product offers and upsells. The app also supports Shopify Plus exclusive features, such as checkout optimizations and custom payment/delivery methods.

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Customize your checkout and increase AOV with targeted smart upsells across your store.

Karst is an Australian brand dedicated to creating sustainable, thoughtfully designed tools that empower creativity. Known for its high-quality recycled stone paper notebooks and woodless pencils, Karst focuses on removing friction in the creative process. Their mission is to provide an ecosystem of well-crafted workspace accessories that inspire and support innovation.

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We built a headless eCommerce platform for Karst, enabling seamless B2B and B2C sales of their eco-friendly creative accessories. Click to read more about this project. 

Hydrogen

Liquid

Prisma ORM

Redis

OpenAPI REST

Docker

CI/CD

ConvertMax PostPurchase Upsell is a Shopify app designed to help merchants boost sales by creating and managing upsell opportunities after a purchase. With a user-friendly interface and ready-made templates, it simplifies the process, enabling merchants to enhance customer experience effortlessly.

ConvertMax PostPurchase Upsell is a Shopify app designed to help merchants increase their average order value with ready-to-use upsell templates. 

Next.js

, highlighting our deep expertise in Shopify app development. Originally designed to enhance the global shopping experience, it allows store owners to automatically direct customers to the correct market while offering seamless language and currency switching.

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Attract customers from all over the world and increase global sales with market geolocation!

Remix.js

Sequelize

Mongoose

MariaDB

Apache Kafka

Single Page Application 

Figma

The Public Shopify Sales Channel App enables merchants to import their product catalogs into the client’s platform seamlessly. This tool automates the import process, making it easier for merchants to manage their products and streamline their workflow. 

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The Public Shopify Sales Channel App enables merchants to import their product catalogs into the client’s platform seamlessly. 

is a post-purchase upsell app developed by 

 that helps Shopify merchants increase revenue through automated upsell and cross-sell campaigns. The app enables store owners to boost sales without additional advertising costs and offers strategic product recommendations at key moments in the customer journey. 

ReSell is a post-purchase upsell app developed by DevIT Software that helps Shopify merchants increase revenue through automated upsell and cross-sell campaigns. 

RabbitMQ

CatalogAce is a powerful tool designed to streamline the creation of wholesale and retail catalogs. By integrating with Shopify, it allows users to effortlessly generate professional, customizable catalogs, line sheets, price lists, and order forms in PDF format.

CatalogAce

CatalogAce is a powerful tool designed to streamline the creation of wholesale and retail catalogs.

Redux

Optimal AB Testing is a powerful A/B testing app designed to help businesses improve product listings and store features through data-driven decisions. Initially developed for a client as a custom solution, the project proved so effective and well-received that, in June 2025, we decided to acquire it ourselves, making it one more 

, following its strong market performance, DevIT successfully sold Optimal A/B Testing to investors.

Optimal AB Testing is a powerful A/B testing app designed to help businesses improve product listings and store features through data-driven decisions.

MySQL

Push Down & Hide Out Of Stock is a Shopify app that automates stock visibility, ensuring a seamless shopping experience by managing out-of-stock products effectively. With automated tagging, real-time updates, and customizable notifications, the client streamlined their inventory workflow, improved sales, and enhanced the customer experience.

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Push Down & Hide Out Of Stock is a Shopify app that automates stock visibility, ensuring a seamless shopping experience by managing out-of-stock products effectively. 

 to help merchants automate their workflows and eliminate manual errors. This powerful tool streamlines routine tasks such as sending automated emails, managing inventory, and updating customer data. The app also allows merchants to save time and reduce human error. 

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React Flow is a Shopify app developed by DevIT Software to help merchants automate their workflows and eliminate manual errors. 

 product created to enhance onsite marketing for Shopify merchants. With a variety of banners and bars, store owners can easily drive sales and engagement. In January 2026, the 

, marking a major milestone for the product and its impact on the e-commerce space.

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Quicky Trending Bars & Banners is a DevIT Software product created to enhance onsite marketing for Shopify merchants. 

SMS Europe is a Shopify app for businesses looking to optimize their SMS marketing campaigns in Europe. The app offers a direct connection to European teleoperators, ensuring competitive pricing and full GDPR compliance.

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SMS Europe is a Shopify app for businesses looking to optimize their SMS marketing campaigns in Europe.

SmartCarts is a Shopify app designed for e-commerce merchants to enhance the shopping experience by offering real-time cart reservation functionality. It helps reduce cart abandonment and boost customer engagement by allowing shoppers to create, view, edit, and reserve their carts for future purchases.

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SmartCarts is a Shopify app designed for e-commerce merchants to enhance the shopping experience by offering real-time cart reservation functionality.

Nest.js

PostgreSQL

Ecomartists is a dynamic platform that connects entrepreneurs, artists, and customers to deliver unique, personalized products. The platform simplifies the process of turning photos into custom drawings, which are then printed on various products. 

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Ecomartists is a dynamic platform that connects entrepreneurs, artists, and customers to deliver unique, personalized products. 

Python

Flask

 is a fully customizable app developed by

for Shopify store owners, allowing them to easily add and manage product labels, badges, and stickers. This software product enhances product visibility, helping businesses highlight promotions, special offers, and key product features. Lably proudly owns the 

, confirming full compliance with Shopify’s highest quality, performance, and UX standards.

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Lably is a fully customizable app developed by DevIT Software for Shopify store owners, allowing them to easily add and manage product labels, badges, and stickers. 

Retter is a powerful e-commerce optimization tool that helps merchants track user interactions through heatmaps and session replays. It enables businesses to understand how visitors engage with their store, identify areas for improvement, and make data-driven decisions to enhance user experience and boost conversions.

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Retter is a powerful e-commerce optimization tool that helps merchants track user interactions through heatmaps and session replays. 

SCSS

SASS

Material UI

 for Shopify Plus merchants to take full control of their checkout page branding and layout. With a user-friendly interface, the app allows merchants to easily customize their checkout experience, offering greater flexibility and enhancing customer satisfaction.

, DevIT sold Stylefy Checkout Branding UI to investors, further demonstrating our ability to develop and scale innovative Shopify tools.

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Stylefy Checkout Branding UI is an app developed by DevIT Software for Shopify Plus merchants to take full control of their checkout page branding and layout. 

 to help Shopify store owners improve the accuracy and professionalism of their content. By automatically correcting grammar and spelling errors across various areas of the store, this app helps boost SEO performance and enhances customer loyalty with minimal effort. The 

, but its impact on content quality remains significant.

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Grammar Content Assistant is an app developed by DevIT Software to help Shopify store owners improve the accuracy and professionalism of their content. 

 is a powerful translation and currency conversion app developed by 

 for Shopify stores, designed to make stores multilingual and multicurrency. Initially launched when Shopify lacked native multilingual support, LangShop became the first app to utilize Shopify's native features, offering a comprehensive solution for global merchants.

LangShop is a powerful translation and currency conversion app developed by DevIT Software for Shopify stores, designed to make stores multilingual and multicurrency.

Laravel

Nifty Bridge is a Shopify app designed for seamless NFT minting and sales, enabling merchants to integrate digital collectibles into their storefronts. Its continuous evolution has made it a flexible solution for brands exploring NFT-based marketing and customer engagement.

Nifty Bridge is a Shopify app designed for seamless NFT minting and sales, enabling merchants to integrate digital collectibles into their storefronts. 

MUSE Cosmetics is a beauty brand that champions the idea of self-expression and individuality. Inspired by the belief that beauty is found in difference, the brand offers clean, natural cosmetics designed to empower everyone to reveal their unique beauty.

MUSE Cosmetics is a beauty brand that champions the idea of self-expression and individuality.

This project is a Shopify-based customization app for an e-commerce brand that specializes in personalized gifts. The platform offers a wide range of products — such as posters, mugs, and keepsakes — designed to turn everyday memories into meaningful moments.

Shopify-based customization app for an e-commerce.

Core-js

Tailwind CSS

VAST Sports is an Austrian brand specializing in high-quality training supplements designed to support peak physical performance. Their products combine scientifically researched ingredients, manufactured in certified facilities to ensure purity and effectiveness.

VAST Sports is an Austrian brand specializing in high-quality training supplements designed to support peak physical performance.

Intiaro is a visual commerce platform focused primarily on the furniture and interior design industry. It provides tools for 3D product visualization, configuration, allowing retailers and manufacturers to offer immersive customization experiences on their websites or in showrooms.

Intiaro is a visual commerce platform for furniture retailers, helping brands deliver immersive 3D product configuration experiences directly on their websites.

CSS3

Return Flag is a Shopify Public App designed to help merchants monitor and manage product returns. The app empowers store owners to identify customers with a history of excessive returns and make informed decisions to protect their business.

Return Flag is a Shopify Public App designed to help merchants monitor and manage product returns.

E-Commerce

Web, mobile, Smart TV & Shopify projects for e-commerce, media, fintech & healthcare clients. Browse DevIT portfolio.

Our Works

E-Commerce