Do you use SwiftUI or UIKit?

Both. We choose the approach based on the application’s requirements and existing architecture. We can also work with projects that use both frameworks.

Can you work with our backend team?

Yes. We agree on API contracts, responsibilities and testing arrangements with your developers. We can also provide backend development when needed.

Can you join our existing development process?

Yes. We can contribute to an agreed scope using your repository, task tracker and code review process.

Do you help with App Store submission?

Yes. We can prepare the build and technical submission details and help address review feedback. Apple makes the final approval decision.

Will we own the source code and accounts?

Source code ownership and handover are defined in the contract. The Apple Developer account and paid third-party services should normally be held by the client, with access provided to our team.

Services

iOS App Development in Poland

We build native iOS applications and help teams improve the products they already have. From a new feature or API integration to a complete app, we can deliver an agreed scope or work alongside your developers. Based in Warsaw, Poland, we work with product teams on new iOS applications, existing app improvements and integrations with backend services.

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How We Can Help

Build a new iOS application

Turn your requirements and designs into a native application, with the integrations and release preparation needed for launch.

Extend an existing app

Add features, update existing flows and connect new services while working within the current architecture.

Connect the app and backend

Implement API integrations and the application logic around authentication, data exchange, subscriptions and external services.

Add development capacity

Bring us in for a defined feature or development phase, with responsibilities and a review process agreed with your team.

A Practical Approach to Native iOS Development

We work with Swift, SwiftUI and UIKit. The choice depends on your existing codebase, supported iOS versions, interface requirements and maintenance plans.

For an existing application, we review the relevant architecture and dependencies before proposing changes. We agree on the scope, API requirements and acceptance criteria with your team.

For a new application, we help clarify technical requirements and coordinate mobile development with design and backend work. We can also develop the backend and administrative tools when these are part of the project.

What's Included

Native iOS Development

Build and extend applications using Swift, SwiftUI and UIKit.

Features & API Integrations

Connect your app with backend APIs and external services, including the loading, error and authentication flows around them.

Existing App Development

Work on an established codebase, from individual improvements to larger feature releases.

Testing & Release Preparation

Prepare TestFlight builds, test agreed user journeys and support App Store submission and responses to review feedback.

Technologies We Use

SwiftSwiftUIUIKitCombineCore DataXCTestFastlaneTestFlight

Start With a Defined First Step

You do not need to commit to a complete application or a long development engagement at the start.

For an existing app, we can begin with a focused review of the relevant code, one feature or one API integration. For a new app, the first step can be clarifying the main user flow, backend dependencies and release requirements.

We agree on the scope and price before starting. Depending on the task, the outcome may be a technical assessment with implementation options or a working feature delivered for your review. Acceptance criteria and any access requirements are agreed in advance.

Discuss a First Step

Our Development Process

Review the Requirements

Discuss your app, designs, existing code and backend dependencies.

Agree on Scope & Technical Approach

Define the functionality, responsibilities, acceptance criteria and estimate.

Develop & Share Builds

Deliver work in agreed stages and provide builds for testing and feedback.

Test & Prepare the Release

Check the agreed user journeys and prepare the application for distribution.

Release & Continue

Support submission, address review feedback within the agreed scope, and plan further development if needed.

Working with Sergey and his team at SparklerSoft on our iHairium mobile app was a truly positive experience. I'm grateful to him and his team for their involvement with the project from the very beginning and throughout its development. We've known each other for a long time. They were easy to communicate with, quickly resolved issues, and genuinely cared about creating a great product. We have a complex product and also developed an AI system. Sergey took responsibility, maintained the pace of work, and made the entire process smooth and reliable. The end result is a polished, user-friendly app that's exactly what we envisioned. I would highly recommend them for any mobile app development project.
Ilia K.Founder & CEO, iHairium
Client testimonial · May 2026

Frequently Asked Questions

Yes. We can work on individual features, integrations and maintenance tasks after reviewing the relevant code and requirements.

Tell Us What Your iOS App Needs Next

Need a new feature, an API integration or help developing an existing application? Send a short description of the task. If available, include an App Store or TestFlight link, designs, API documentation and any deadline or technical constraints. Please do not send passwords or production credentials through the contact form. We’ll review the information, identify what needs clarification and discuss the scope of a practical first step.

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