iPhone App Development in Swift and SwiftUI
Native iOS apps that feel at home on iPhone: built in Swift and SwiftUI, integrated with Apple Pay, HealthKit and Sign in with Apple, and guided through App Store review by our team.
- Swift and SwiftUI codebase
- App Store review handled
- Apple Pay, HealthKit, widgets
- Weekly TestFlight builds
- Swift
- SwiftUI
- UIKit
- Xcode
- Combine
- Core Data
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iOS development services
Every engagement starts with a free consultation and a written, fixed quote.
Custom iPhone app development
Native Swift apps planned around your business goal, from customer-facing ecommerce and booking apps to internal tools, with an architecture that scales as features grow.
SwiftUI interface design
Interfaces built in SwiftUI with Dynamic Type, dark mode and VoiceOver support, following Apple's design guidelines so users feel at home from the first tap.
Apple ecosystem integrations
Apple Pay, Sign in with Apple, HealthKit, MapKit, Core Location, widgets, Live Activities and Apple Watch companion apps, added only where they serve your users.
Objective-C and UIKit modernization
Upgrade an aging app to Swift and SwiftUI in phases, remove deprecated APIs and fix the crashes that reappear after every major iOS release.
AI and smart features
Add LLM-based chat assistants, semantic search, receipt or document scanning with Vision, and on-device Core ML models that keep sensitive data on the phone.
App Store launch and support
App Store Connect setup, screenshots, privacy labels, TestFlight beta testing, reviewer responses and ongoing updates for new iOS releases and iPhone models.
Native iOS apps that pass review and keep users
- Shopping and subscription apps
- Health, fitness and assessment apps
- Booking and appointment apps
- Education and learning apps
- Companion apps for hardware and IoT devices
- Field and sales team apps
Ecomsolver offers iPhone app development for businesses that want a fast, polished app their customers trust. iPhone users expect smooth scrolling, familiar gestures, Face ID login and Apple Pay at checkout, and they delete apps that feel slow or out of place. We build in Swift and SwiftUI, follow Apple's Human Interface Guidelines and test on real devices, so your app looks and behaves like it belongs on iOS.
App Store review is where many projects stall. Rejections for missing privacy details, unclear in-app purchase flows or account deletion requirements can delay a launch by weeks. We plan for those rules at the design stage, prepare the privacy labels and reviewer notes, and manage the submission until the app is live and visible to customers.
Our work covers new apps, rebuilds of older Objective-C or UIKit apps, and features such as widgets, Live Activities, push notifications, offline sync and AI-powered search or chat. You get weekly TestFlight builds, direct access to the developers writing the code and full ownership of everything we deliver.
Plan your iPhone app with an iOS developer
Book a free consultation to review your feature list, App Store risks and budget. You get a written fixed quote and a clear milestone plan.
- 100% free
- No obligation
- Reply within 24 hours
We fix it, fine-tune it, then add AI and automation.
Most clients come to us with something already running: a store that is slow, an app that crashes, code nobody wants to touch. We stabilise it first, then add the AI features that save time and earn money.
Fix
A code and infrastructure audit of your mobile app product, then the fixes that matter most.
- Bugs, crashes and broken integrations
- Security patches and outdated versions
- Code nobody can maintain
Fine-tune
Make it fast, stable and easy to change, without a risky rewrite.
- Speed, caching and database tuning
- Tests, CI/CD and monitoring
- UX fixes where users get stuck
Add AI & automation
Practical AI built into the mobile app product you already have.
- AI search and assistants over your own data
- Content, document and support automation
- AI agents that work with your tools
From first call to launch, with no surprises.
Clear milestones, weekly demos and a fixed price agreed before any work starts.
Discovery and scope
We map your features, users and monetization model, check them against App Store rules, choose the minimum iOS version to support and send a fixed quote.
Design and prototype
Figma prototypes based on Apple's Human Interface Guidelines, reviewed on an actual iPhone so you can feel navigation and flows before code is written.
Sprint development
Swift development in short sprints, with a TestFlight build after each so you and your stakeholders test real features on your own devices.
QA and performance
Testing across iPhone sizes and recent iOS versions, XCTest automation, accessibility checks and Instruments profiling for speed, memory and battery.
Submission and support
We submit to the App Store, answer reviewer questions, monitor crashes after launch and keep the app updated for each new iOS release.
What you get with our iOS team
Fewer App Store rejections
We design login, payments, permissions and privacy disclosures around Apple's review guidelines from the start, avoiding the most common reasons apps get sent back.
Predictable budget
A written fixed quote, milestone payments and weekly demos mean you see progress before you pay, and any scope change is priced before work begins.
Performance users notice
We profile with Xcode Instruments to cut launch time, memory use and battery drain, because slow apps lose ratings and repeat sessions quickly.
Time-zone friendly collaboration
Offices in Jaipur and Austin give working-hour overlap with the USA, UK, Europe and Australia, plus direct chat with the developers building your app.
- Swift
- SwiftUI
- UIKit
- Xcode
- Combine
- Core Data
- SwiftData
- CloudKit
- Firebase
- StoreKit
- Core ML
- TestFlight
- Fastlane
- GitHub Actions
What clients say about working with Ravindra and the team.
Verified reviews from Clutch, GoodFirms, LinkedIn and long-term clients in the USA, UK, Australia, Europe and India.
“I've been working with Ravindra and the Ecomsolver development team consistently for several years now and will continue to do so. During this time, the team has worked across the Magento, Shopify and WordPress platforms and on everything from small changes to full website builds. Throughout this period the team has continued to provide excellent service and inventive, skillful solutions…”
“We've increased sales by 20% thanks to their work.”
Clutch summary: Ecomsolver provides ongoing web development services and support for a Magento website, adding extensions and troubleshooting and fixing bugs as needed. Ecomsolver's ability to maintain an evolving, complex e-commerce site is critical to the…
Founder, Crown Bees · Woodinville, WashingtonMagento development & support
“I recently had the pleasure of working with Ravindra Saini on the redesign and refinement of my website, CulturalConfidence.com, and I couldn't be more pleased with the results. Ravindra brought both technical skill and a responsive, collaborative attitude to the process. He implemented a range of updates with care, from visual improvements to functional adjustments, and always remained receptive to…”
CEO & Cultural Expert, Cultural ConfidenceWebsite redesign“Ravindra is one of the absolute best Magento developers I've hired and worked with over the past 3 years and just a pleasure to work with! If you are in need of integrating the fastest Magento product import process available this is your guy! He's very professional and his English communication skills are perfect. If you are on Magento or…”
AVP, Web Marketing Manager, AXOS BankMagento development“We're impressed with their quality of work.”
Clutch summary: Ecomsolver Pvt. Ltd. has developed an e-commerce website for a custom uniforms company. The team has built and maintained the client-requested Magento features. Ecomsolver Pvt. Ltd. has helped the client see success in their…
President, WearForm · Houston, TexasMagento e-commerce development“5* What an amazing developer. I have been communicating with Ravindra over the last few days and his service he delivered has been exemplary brilliant. Outstanding service, amazing value, great product and he have made every effort to go above and beyond for my needs. Ravindra listened to my needs, explained everything and gave support all the way through. Ravindra…”
“I could always depend on them when something needed to be done quickly.”
Clutch summary: Ecomsolver Pvt. Ltd. fixed technical issues in a sophisticated e-commerce site. They also created custom navigation functionality and an online catalog. The enhanced site helped double sales, thanks to Ecomsolver's technical expertise. Their reliability,…
Technical Lead, AP OnderdelenCustom Magento development“Their breadth of knowledge exceeded our expectations.”
Clutch summary: Ecomsolver Pvt. Ltd. provided website support for an e-commerce platform. They upgraded the client's Magento website from version 4.4.2 to version 4.4.7-p3 and updated their existing and depreciated plug-ins. Ecomsolver Pvt. Ltd. delivered a…
Sales Manager, Streamaster Australia · SydneyMagento upgrade & support“We have worked with Ecomsolver for the past 3 years in a steady capacity. Our magento website (www.crownbees.com) has been maintained, upgraded, and modified by Ecomsolver. We're are in the middle of rebuilding our website for Magento 2, and rely upon their team to ensure all extensions function and work as developed. We are extremely pleased with their work. Ravindra,…”
Owner, Crown Bees · Woodinville, WashingtonMagento maintenance & Magento 2 rebuild“As someone without any experience in creating a webpage, it was important to me to be able to work with an expert. Ravindra is not only an expert at web design and creation, but also a very smart, patient and professional person. The project was completed faster than expected, and the site looks even better than I imagined. It was…”
Website design & development“They would give you exactly what you want and expect.”
Clutch summary: A GIS data service provider tapped Ecomsolver Pvt. Ltd. to update their e-commerce site from Magento 1 to Magento 2. They worked closely with the client to upgrade and refresh the web app. Ecomsolver…
CEO & Founder, USLandGrid · Denver, ColoradoMagento 1 to Magento 2 migration“Ravindra Saini is a very skilled professional. We have developed a few projects together and I really enjoyed working with him. He proved to have a deep knowledge of website design and building on multiple platforms, solved all the problems in a fast and effective way, and showed a big availability to accommodate client's demands and needs. I recommend Ravindra…”
Senior engineering, with the safeguards that make outsourcing safe.
9+ years as Ecomsolver Pvt. Ltd., building and maintaining software for clients in the USA, UK, Europe, Australia and India. Rated 5.0 on Clutch and 4.8 on GoodFirms.
Pay per milestone
You never pay for work you have not seen and approved.
You own everything
Full source code, designs and accounts are transferred to you. No lock-in.
NDA before you share
We sign your NDA before you tell us about your idea. Your IP stays yours.
Full transparency
Weekly demos, a shared task board and direct access to your developers.
Your time zone
Overlapping hours with the USA, UK, Europe, Middle East and Australia.
Senior engineers
Your project is built by experienced developers, not trainees.
iPhone App Development: frequently asked questions
Ask us on WhatsApp. A real person replies, usually within minutes during working hours.
Ask on WhatsAppHow much does iPhone app development cost?
The main cost drivers are the number of screens and user roles, backend and admin panel work, Apple integrations such as HealthKit or in-app purchases, and the level of design detail you want. Rebuilding an existing app also depends on the state of the current code. We give a written fixed quote with milestones after a free consultation, so the budget is agreed before iPhone app development begins.
What happens if Apple rejects the app?
Rejections usually involve privacy disclosures, account deletion, in-app purchase rules or incomplete reviewer notes. We plan for these rules during design, which prevents most issues. If a reviewer still raises something, we read the cited guideline, fix the app or reply in App Store Connect, and resubmit. Handling review is part of our launch scope, not an extra charge.
Do I need a native iOS app, or can I use Flutter or React Native?
Native Swift is the better choice when the app relies on Apple-specific features like widgets, Live Activities, HealthKit, ARKit or Apple Watch, or when animation quality is central to the product. If you need iPhone and Android quickly on one budget, cross-platform can make more sense. We review your feature list and recommend honestly, since we build both.
How long until my app is on the App Store?
A focused first release often takes a few months from approved design to submission, and larger apps take longer. App Store review itself is usually quick, but you should leave a buffer for reviewer questions. We share a milestone plan with the quote and demo every week through TestFlight, so any delays surface early.
Who owns the app and the Apple developer account?
You do. We recommend publishing under your own Apple Developer account in your company name, with our developers added as team members. All source code, design files and documentation are handed over to you, and we sign an NDA before discovery begins so your idea stays protected.
Do you maintain iPhone apps after launch?
Yes. Apple ships a major iOS version every year and periodically changes App Store requirements, which can break features or block updates. Our post-launch support covers crash monitoring, compatibility updates, security fixes, new iPhone models and feature work, on a plan sized to how often your app changes.