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Fiverr Pro
English
$
USD
Our agency will do mobile app development, ios app, android app, react native, flutter developer
Kretoss Tech
Vetted Pro
Level 2
Agency
1 order in queue
5.0
5.0
Gig Summary
What people loved about this freelancer
mat_its_mk
Germany
Great work on the mobile app development! This is a large project, and once again, this milestone was completed successfully. Communication was smooth, the...
aitorramos
Spain
Another excellent experience with the team. They continue to make solid progress on a complex project, always showing commitment, patience, and a willingness...
dani_plantworld
United States
The project was really well done and delivered fast. The solution was what I expected and I would definitely hire them again if I need help in my website.
carlosmartin390
United Kingdom
We’ve been working with Kretoss on the development of our app, and the experience has been outstanding. From the very beginning, the team demonstrated a high...
bhavin_mist
Canada
We worked with Kretoss to implement our mobile app based on a defined set of requirements, and overall the experience was solid. They demonstrated a clear understanding...
Vetted by Fiverr Pro
Kretoss Tech was selected by the Fiverr Pro team for their expertise.
About this gig
Looking for a reliable team to build your mobile app? You're in the right place.
Hi, I'm the CEO & founder of Kretoss Technology.
We have 900+ verified 5-star reviews on Fiverr and specialize in Mobile App Development, Flutter, React Native, Android & iOS App Development, Firebase, Supabase, Node.js, and AI-powered solutions.
Our Services
- Mobile App Development
- Flutter App Development
- React Native App Development
- iOS & Android App Development
- UI/UX Design (Figma)
- Firebase & Supabase, Node.js Backend
- API & Payment Gateway Integration
- Full-Stack Web Development
- AI Integration
Our Process
- Requirement Analysis
- UI/UX Design
- Development
- Testing & QA
- App Store & Play Store Deployment
Why Choose Kretoss Technology?
- 900+ 5-Star Reviews
- 100% Custom Development
- Clean & Scalable Code
- On-Time Delivery
- Full Source Code Ownership
- Post-Launch Support
Whether you need an MVP, startup app, business solution, marketplace, booking, healthcare, food delivery, Dating, Taxi booking or any custom mobile app, we're ready to bring your idea to life.
Message us today for a free consultation, and let's build something amazing together!
How it works
Here are the steps to complete your Basic package project:
- 1
Requirements - Contact us and share your requirements without payment for any order - We will discuss everything via chat or a zoom call - We will share a quotation and timeline based on your requirements
- 2
Design concept - We deliver complete design of the application/game - The first phase ends only after the buyer/client approves the design
- 3
App Development - We will develop App frontent same like design - Once client approve this milestone we will move to next one
- 4
Backend Development - We will develop Backend API and connect to App - Client will test and complete this milestone
- 5
Product Delivery - We will deliver a complete, working Mobile App - Client will test and review and move to next milestone
- 6
Going Live - We will test and upload the final application to the respective domain or app stores - The final phase ends once apps are uploaded to the respective stores.
About this agency
Kretoss Tech
Vetted Pro
Agency
50 employees
Level 2
Kretoss Tech is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Mobile App Development
Website Development
- FromIndia
- Member sinceMar 2015
- Avg. response time1 hour
- Last deliveryabout 14 hours
Languages
English, Hindi, Gujarati
Kretoss Technology delivers production-ready Web, Mobile, AI, and Custom software solutions for startups & enterprises clients.
AI Automation, AI Agents, SaaS Dev, Mobile Apps, Web Dev, ERP & CRM, Shopify, Flutter, React, UI/UX, and API Integrations.
✓ 1,500+ successful projects delivered worldwide
✓ 12+ years of software development expertise
✓ Trusted by startups & enterprise clients
✓ Dedicated team of experienced engineers
✓ Transparent communication
OpenAI, Claude, React, Next.js, Flutter, React Native, Laravel, Node.js, Python, .NET, Supabase, Firebase, PostgreSQL, Shopify & AWS.
Portfolio
Other Mobile App Development Services we Offer
FAQ
Will you provide the source code of the app?
Yes! With every order, I will provide you with the complete source code of the app developed in Flutter or React native.
What will be the price and timeline for my project?
The price and timeline depend on the complexity and requirements of your project. Let’s discuss your needs, and I’ll provide a clear estimate during our meeting.
Do you customize existing Mobile apps?
Yes, I can customize your existing Flutter app. We’ll need to discuss the exact issues or features you want to modify to ensure a perfect solution.
Do you offer app deployment services?
Yes, I can upload your app to Google Play Store or Apple App Store. However, you’ll need to provide the required documents, including terms and conditions and your company policy.
What is the design UI/UX phase?
The design phase involves creating the user interface (UI) and user experience (UX) of your app, ensuring it’s visually appealing and user-friendly before moving to development.
Can you build an app using AI?
We offer both traditional custom app development and AI-assisted app development. We can build your app using Flutter, React Native, or AI-powered development workflows based on your project requirements, budget, and goals. The choice is entirely yours.
Can you build the backend/API as well?
Absolutely. I provide complete end-to-end development including backend APIs, admin dashboard, database design, authentication, payment integration, notifications, and cloud deployment.
Can you integrate third-party APIs into my app?
Yes sure, I can integrate various third-party APIs, such as payment gateways, social media logins, geolocation services, and more, based on your app's requirements.
Do you provide post-development support?
Yes, I offer post-development support for bug fixes and minor changes to ensure your app runs smoothly after delivery.
Can you develop a multilingual app?
Yes, I can develop apps that support multiple languages to cater to a broader audience.
Reviews
258 reviews for this Gig
| (249) | ||
| (6) | ||
| (1) | ||
| (0) | ||
| (2) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M mat_its_mk
Germany
Ongoing collaborationGreat work on the mobile app development! This is a large project, and once again, this milestone was completed successfully. Communication was smooth, the implementation was professional, and both the Android and iOS versions turned out very well. I’m very happy with the result and would definitely recommend working with this developer.
$800-$1,000
Price
3 weeks
Duration
R 
Seller's Response
Helpful?A aitorramos
Spain
Ongoing collaborationAnother excellent experience with the team. They continue to make solid progress on a complex project, always showing commitment, patience, and a willingness to improve every detail. Communication is good, feedback is taken seriously, and they are always available to discuss solutions when needed. Very...
$800-$1,000
Price
3 days
Duration
Helpful?T teodoratuf
Bosnia and Herzegovina
Ongoing collaborationWorking with Kretoss and continuing to work with them has been a very positive experience. They’re professional, experienced, and take the time to fine-tune even minor requests until the result matches exactly what I envisioned. They’ve also been understanding about scheduling despite the time zone differences,...
$1,000-$2,500
Price
3 months
Duration
R Seller's Response
Helpful?A aitorramos
Spain
Ongoing collaborationAnother great experience working with this team. This is a complex and demanding project, and they continue to approach every challenge with patience, professionalism, and a problem-solving mindset. They listen carefully to feedback and work hard to turn the requirements into a functional product. I...
$600-$800
Price
5 days
Duration
R Seller's Response
Helpful?D dani_plantworld
United States
Ongoing collaborationThe project was really well done and delivered fast. The solution was what I expected and I would definitely hire them again if I need help in my website.
$600-$800
Price
4 days
Duration
R Seller's Response
Helpful?
Reviews
258 reviews for this Gig
| (249) | ||
| (6) | ||
| (1) | ||
| (0) | ||
| (2) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M mat_its_mk
Germany
Ongoing collaborationGreat work on the mobile app development! This is a large project, and once again, this milestone was completed successfully. Communication was smooth, the implementation was professional, and both the Android and iOS versions turned out very well. I’m very happy with the result and would definitely recommend working with this developer.
$800-$1,000
Price
3 weeks
Duration
R Seller's Response
Helpful?A aitorramos
Spain
Ongoing collaborationAnother excellent experience with the team. They continue to make solid progress on a complex project, always showing commitment, patience, and a willingness to improve every detail. Communication is good, feedback is taken seriously, and they are always available to discuss solutions when needed. Very...
$800-$1,000
Price
3 days
Duration
Helpful?T teodoratuf
Bosnia and Herzegovina
Ongoing collaborationWorking with Kretoss and continuing to work with them has been a very positive experience. They’re professional, experienced, and take the time to fine-tune even minor requests until the result matches exactly what I envisioned. They’ve also been understanding about scheduling despite the time zone differences,...
$1,000-$2,500
Price
3 months
Duration
R Seller's Response
Helpful?A aitorramos
Spain
Ongoing collaborationAnother great experience working with this team. This is a complex and demanding project, and they continue to approach every challenge with patience, professionalism, and a problem-solving mindset. They listen carefully to feedback and work hard to turn the requirements into a functional product. I...
$600-$800
Price
5 days
Duration
R Seller's Response
Helpful?D dani_plantworld
United States
Ongoing collaborationThe project was really well done and delivered fast. The solution was what I expected and I would definitely hire them again if I need help in my website.
$600-$800
Price
4 days
Duration
R Seller's Response
Helpful?
