CoinForShop.

CoinForShop is a startup marketplace created around the idea of using cryptocurrency as a payment method for online purchases. The project applies blockchain technology to a familiar e-commerce model, allowing users to discover products and pay for goods in a digital-asset-oriented environment.

The product combines the logic of an online marketplace with the requirements of cryptocurrency-based transactions. This creates a bridge between emerging financial technologies and traditional online shopping behaviour.

From a product perspective, CoinForShop required more than a simple catalogue or mobile application. The solution involved several connected layers: customer-facing mobile apps, frontend components, backend services and the business logic required to support the marketplace concept.

CoinForShop demonstrates how blockchain technology can be integrated into a familiar online-commerce experience.

Traditional online commerce is commonly based on conventional payment instruments and centralised transaction workflows. Cryptocurrency introduces a different financial model, with its own requirements related to digital assets, transaction processing and user expectations.

CoinForShop was conceived to explore how these technologies could be applied to an online marketplace. The project positioned cryptocurrency not as an isolated financial product, but as part of a practical purchase journey.

This approach makes the platform relevant for businesses exploring crypto-enabled commerce, blockchain marketplaces and new payment scenarios for digital customers.

The CoinForShop solution combines a marketplace model with mobile and web-based product components. Users can interact with the marketplace through mobile applications, while the frontend and backend layers support the broader operation of the digital product.

The solution was structured around the following product principles:

Present products through a familiar online marketplace experience.

Support cryptocurrency-based payment scenarios for goods.

Make the product accessible through iOS and Android applications.

Connect frontend interfaces with backend services and business logic.

Create a technical foundation that can be extended as the product evolves.

Marketplace experience

The central product layer is the marketplace itself. Its purpose is to connect product discovery with a purchase journey and create an accessible interface for users interested in buying goods with cryptocurrency.

Cryptocurrency payment direction

The defining feature of CoinForShop is its focus on payment for goods in cryptocurrency. This differentiates the platform from a conventional marketplace and places blockchain technology at the centre of the product proposition.

Mobile applications

CoinForShop includes applications for both iOS and Android. The mobile layer enables users to access the marketplace through native mobile experiences and supports the product’s consumer orientation.

Frontend and backend components

The project includes frontend and backend development in addition to the mobile applications. This full product structure supports the connection between user interfaces, marketplace data, transaction-related logic and the wider service architecture.

Sparkler Soft delivered the mobile, frontend and backend components from scratch to completion.

The development scope covered the creation of the product components required to support the marketplace concept, including mobile applications for iOS and Android, frontend functionality and backend services.

Sparkler Soft’s full-cycle development approach allowed the project to be treated as one connected digital product rather than as a collection of separate interfaces.

iOS mobile application development.

Android mobile application development.

Frontend development for the marketplace experience.

Backend development and service-side business logic.

Connection between mobile, frontend and backend layers.

Technical preparation for future integrations.

The project was developed using technologies from Sparkler Soft’s mobile, backend, frontend and cloud engineering stack. Specific project-level technologies may depend on the relevant stage and implementation requirements.

iOS

Swift and Objective-C

ANDROID

Kotlin and Java

BACKEND

Java and Spring Boot

FRONTEND

React JS and Node JS

CLOUD

Amazon Web Services

INTEGRATIONS

APIs, SDKs and third-party services

Sparkler Soft develops mobile applications together with the server-side and frontend components required for their operation. This makes it possible to maintain a consistent relationship between mobile interfaces, web functionality, backend services and external integrations.

The company’s technology approach also supports the development of custom APIs and mobile SDKs. These capabilities are relevant for marketplace and FinTech products that need to connect with payment providers, external services or additional digital platforms.

For a cryptocurrency marketplace, this type of architecture provides a foundation for future product extensions. Specific integrations and payment providers should be defined according to the product’s regulatory, operational and market requirements.

CoinForShop demonstrates the potential of combining blockchain technology with a conventional marketplace experience. Instead of presenting cryptocurrency as a separate technical layer, the product places it inside a recognisable online-commerce workflow.

This approach can help businesses explore new customer segments, alternative payment models and digital-asset-based commerce products.

From a development perspective, the project also demonstrates Sparkler Soft’s ability to deliver a multi-platform product involving native mobile applications, frontend development, backend services and blockchain-oriented business logic.

iOS mobile application.

Android mobile application.

Frontend marketplace components.

Backend and server-side components.

Public project website.

The visual used on this page is a conceptual portfolio cover created to represent the project’s business and technology direction. It is not presented as a direct screenshot of the original CoinForShop interface.

The original product presentation screens below show the marketplace, product details, registration, checkout and account experience.