You will get Android & iOS Mobile App Fitness Watch Streaming Finance Dating
Top Rated
Top Rated
Project details
I specialize in building high-quality Android and iOS applications that help businesses grow, engage users, and stand out in the market. Whether you need a brand-new app from scratch or improvements to an existing product, I deliver reliable, scalable, and user-friendly solutions.
I can develop the following kinds of Android and iOS apps for you:
Social apps – connect people and create communities
Fitness apps – track workouts, nutrition, and progress
E-commerce apps – seamless shopping experiences with secure payments
Google Maps & navigation-based apps – location-aware solutions for real-life use cases
Audio & video streaming apps – smooth performance and engaging content delivery
Entertainment apps – interactive and fun user experiences
Custom business tracking/management apps – boost productivity and efficiency
Or any custom app tailored to your unique requirements
I bring not just technical skills, but also a deep understanding of product design and user experience — making sure your Android and iOS app is both functional and enjoyable to use.
✨ Popular Solutions I Deliver:
Fitness App | Watch App | Streaming App | Finance App | Dating App | Android and iOS Apps
I can develop the following kinds of Android and iOS apps for you:
Social apps – connect people and create communities
Fitness apps – track workouts, nutrition, and progress
E-commerce apps – seamless shopping experiences with secure payments
Google Maps & navigation-based apps – location-aware solutions for real-life use cases
Audio & video streaming apps – smooth performance and engaging content delivery
Entertainment apps – interactive and fun user experiences
Custom business tracking/management apps – boost productivity and efficiency
Or any custom app tailored to your unique requirements
I bring not just technical skills, but also a deep understanding of product design and user experience — making sure your Android and iOS app is both functional and enjoyable to use.
✨ Popular Solutions I Deliver:
Fitness App | Watch App | Streaming App | Finance App | Dating App | Android and iOS Apps
Platform
AndroidApp Type
Native AppDevelopment Technology
Java, Kotlin, SwiftApp Purpose
Chat, Cryptocurrency, Dating, Finance, Health & Fitness, Lifestyle, Maps & Navigation, Social Networking, Streaming, TravelExpertise
Design, Localization, SecurityWhat's included
| Service Tiers |
Starter
$400
|
Standard
$600
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 15 days | 25 days | 40 days |
Number of Revisions | 0 | 0 | 1 |
Number of Mobile Operating Systems | 1 | 1 | 4 |
App Store Upload | - | - | - |
App Icon Design | - | - | |
Splash Screen | - | ||
Ad Network Integration | - | - | - |
Source Code |
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JC
Jordan C.
May 30, 2026
Mobile Developer needed to fix and enhance an existing health & fitness app
The entire team at Natife was a pleasure to work with. They were all very thorough, knowledgeable, and did great work!
ID
Igor D.
Apr 8, 2026
Mobile App Developer - Senior iOS Developer (AI-Driven Productivity App) — MVP in a short period
Very professional, super helpful. Great people to work with. Truly a great experience. I really enjoyed it. They are knowledgeable, they care about the results and quality of work. I highly recommend.
PS
Pave S.
Feb 19, 2026
iOS Developer needed for referral program development
GA
Guy A.
Jan 4, 2026
Android Mobile App Development
SM
Steve M.
Jan 3, 2025
Custom app for LG webOS
I had this group create a WebOS app to run on a TV. They were very professional and a good value. Though, we did run into limitations of the WebOS platform that could not be easily overcome.
About Alexandr
Mobile App Developer | IOS Developer | Mobile App Designer
100%
Job Success
Zaporizhzhya, Ukraine - 3:45 pm local time
I’m a Mobile App Developer with 12+ years of experience, 90+ released apps, 3M+ downloads, 30+ five-star reviews, 100% Job Success, Top Rated Plus. I work across Android, iOS, React Native, Flutter, backend integrations, and Mobile App Design.
As a Mobile App Developer, Android Developer, IOS Developer, and Mobile App Designer, I can join at discovery, design, development, release, or support.
▪️ NATIVE iOS & ANDROID
I work across 2 native ecosystems with one product standard for UX and releases. For iOS Development, I work with Swift, SwiftUI, UIKit, StoreKit, subscriptions, push, auth, analytics, and API Integration. As an IOS Developer and swift ios developer, I can build a new ios app, take over an existing codebase, or support ios developer ai and ios game developer features.
On Android, I work with Kotlin, Jetpack Compose, Firebase, BLE, payments, maps, background services, and Android App Development. As an Android Developer, I work with android kotlin and android developer kotlin codebases, android app products and greenfield work as an android app developer.
For app developer ios android projects, I keep both platforms aligned in UX, APIs, analytics, and releases.
▪️ CROSS-PLATFORM & BACKEND
When 1 shared codebase makes more sense, I use React Native or Flutter. I’ve delivered react native mobile products, Hybrid App Development projects, and ionic developer solutions that needed native Swift or Kotlin modules. A focused MVP can often reach its first release in 4-8 weeks.
For App Development, I work with Node.js, Python, JavaScript, Firebase, databases, and API Integration. I collaborate with a full stack developer, flutter developer, web developer, react native specialist, or mobile developer.
▪️ DESIGN THAT CAN ACTUALLY BE BUILT
Across 90+ releases, Mobile App Design has stayed part of my engineering process. As a Mobile App Designer, I think about real data, loading, errors, permissions, subscriptions, edge cases, Smartphone behavior, and User Profile Creation.
I can work from Figma, improve a Mobile App Redesign, or help a figma mobile app designer turn a concept into build-ready flows. I work with figma, web design, ux designer, and ui ux teams, and support mobile app logo design when needed.
▪️ AI, APIS & COMPLEX FEATURES
As an ai mobile app developer, I connect products to AI services through Python, Node.js, JavaScript, Firebase, and API Integration. An ios developer ai or mobile app design ai project still needs 3 things - clear UX, architecture, and predictable fallbacks.
My experience covers BLE, maps, camera features, subscriptions, push, offline storage, payments, auth, analytics, and Native App Development. I can review a bubble io certified developer mobile app or ionic developer project and advise whether to keep the stack, rebuild parts, or move to React Native, Flutter, Android, or iOS.
▪️ NEW APP, REDESIGN OR RESCUE
I can join for Mobile App Development, iOS Development, Android App Development, Hybrid App Development, Mobile App Bug Fix, Mobile App Redesign, or complete App Development. I can take a new Mobile App from scope to release or stabilize an existing one.
A rescue project usually starts with 3 steps - audit, stabilization, and development.
As an Android Developer, I can own Kotlin architecture. As an IOS Developer, I can own Swift architecture and App Store delivery. As a Mobile App Designer, I can improve UX before engineering starts. I plan Native App Development, Smartphone behavior, and User Profile Creation early.
▪️ HOW I WORK
After 12+ years and 90+ releases, I keep communication direct, estimates realistic, and releases manageable. I use Mobile App Development, Android App Development, iOS Development, Mobile App Design, Flutter, React Native, API Integration, Hybrid App Development, Node.js, Swift, Kotlin, Python, and JavaScript as working tools, not buzzwords.
Depending on the project, clients may find me as a mobile app developer, mobile application developer, mobile app developer ukraine, mobile app designer, figma mobile app designer, react native mobile, ai mobile app developer, app developer ios android, android developer, android app developer, ios developer, swift ios developer, or ios app. I also work with mobile app logo design, android game developer, ios game developer, android kotlin, android developer kotlin, android app, ios, ios developer ai, ionic developer, and bubble io certified developer mobile app projects.
For maintenance, I handle Mobile App Bug Fix, Mobile App Redesign, Mobile App Development, Mobile App Design, Native App Development, Android App Development, iOS Development. I stay hands-on with Android, Swift, Kotlin, Flutter, React Native, Node.js, Python, JavaScript, Smartphone UX, User Profile Creation, and the Mobile App itself.
If you have a Figma file, build, specification, or idea, send it over. I’ll review the scope and tell you the most practical next step.
Steps for completing your project
After purchasing the project, send requirements so Alexandr can start the project.
Delivery time starts when Alexandr receives requirements from you.
Alexandr works on your project following the steps below.
Revisions may occur after the delivery date.
PLANNING
DESIGN