Served 600+ customersCustom 
Apps 
That Help Startups Launch Globally 
We build scalable web & mobile apps to launch your startup worldwide.
What We Can Build for You
Web App Development
Got an idea for a web platform? We’ll help you turn it into a fully functional web app that’s fast, reliable, and easy to scale as you grow.
iOS App Development
Looking to launch your app on the App Store? We build smooth, user-friendly iOS apps that work perfectly on iPhones and iPads.
Android App Development
Planning to reach Android users? We develop Android apps that run seamlessly on all major devices, built to match your exact needs.
Ready to Build Your App? Let’s Make It Happen
With years of experience & a strong global client base, our team knows what it takes to turn your idea into a successful application.
Satisfied Customers
Counties Served
Years in the Industry
Team Size
From concept to launch, Our process
Bringing your app idea to life involves more than just coding, it's a step-by-step journey. Here's how RentALLScript makes it happen.
Understanding the Project
We start by listening, really listening. We take time to understand your idea, your vision, your goals, your users, and how the app fits into your business.
Planning & Wireframing
Before any design or code, we map out the app’s flow and structure. Wireframes give you a clear picture of how your app will work, screen by screen.
UI/UX Design
Your app should not only function well but feel great to use. Our design team creates clean, user-friendly interfaces that match your brand and delight users.
Front-End Development
This is where your app starts coming to life. We turn designs into responsive, interactive screens using modern frameworks and best practices.
Back-End Development
Everything behind the scenes, from databases to APIs, is handled with secure, scalable backend logic that keeps your app running smoothly.
Integrations
Need payment gateways, third-party APIs, maps, or notifications? We integrate the tools your app needs to work seamlessly and efficiently.
Cloud Setup
We deploy your app on reliable cloud platforms, ensuring it’s fast, secure, and built to scale as you grow.
Testing & Quality Assurance
Before launch, we test everything from functionality, performance, security, and more. No shortcuts here, just a smooth, bug-free experience.
Deployment
Once everything’s ready, we handle the launch process. Whether it’s the App Store, Play Store, or the web, we take care of the rollout.
Maintenance & Support
Your app doesn’t stop evolving after launch and neither do we. We’re here to fix issues, add features, and support your app as it grows.
Your Data is in Safe Hands
We understand how important trust is when building an app. That’s why security is built into everything we do.
Customer Security
We protect your users with secure authentication, encryption, and privacy-first practices.
Data Security
Your business data stays safe with end-to-end encryption, secure storage, and strict access controls.
Web Security
From HTTPS to secure APIs, we implement modern web standards to defend against threats from the start.
Ready to Start? We’re Just a Message Away
Have an app idea in mind? Let’s turn it into something real. Share your requirements, and we’ll help you get started the right way.
Hire Our Dedicated Developers For Your Project
Hire skilled developers fully focused on your project - Working from our office, managed by experts, and committed to your success.
Handpicked Talent
Developers match your tech and goals.
Full-Time Focus
No shared resources, just your project.
Office-Based Team
Stable environment with supervision and infrastructure.
Managed by Experts
You focus on business, we ensure dev quality.
Simple Monthly Billing
Flat rate. No surprises. Easy to scale.
Meet Our Developers
Siva Prakash
Senior FullStack Developer(4+yrs exp)
Abishek
Senior FullStack Developer(4+yrs exp)
Janani
Senior FullStack Developer(5+yrs exp)
Barath
Senior iOS Developer(3+yrs exp)
Karthikai Nathan
Senior Flutter Developer(5+yrs exp)
Siva Prakash
Senior FullStack Developer(4+yrs exp)
Abishek
Senior FullStack Developer(4+yrs exp)
Janani
Senior FullStack Developer(5+yrs exp)
Barath
Senior iOS Developer(3+yrs exp)
Karthikai Nathan
Senior Flutter Developer(5+yrs exp)
Siva Prakash
Senior FullStack Developer(4+yrs exp)
Abishek
Senior FullStack Developer(4+yrs exp)
Janani
Senior FullStack Developer(5+yrs exp)
Barath
Senior iOS Developer(3+yrs exp)
Karthikai Nathan
Senior Flutter Developer(5+yrs exp)
Before you go!
Check out what others built and what they say about working with us.
Before you go!
Check out what others built and what they say about working with us.
“I started my project with you guys this year. I want to say this has been a very amazing experience and you are all very professional, and very talented, and you have helped me to design my app the way I want with so many customization. Thank you so much. I wish you to become the most successful company in India and the world. Thanks, Gowtham for your amazing ongoing Support.”
- Usman
“As we know, we're in production, we're in live, it's because of you and because of us, and because of a great collaboration. So we are proud to make such a great product with you, we want to thank you for your time and enthusiasm. We always have a lot of difficulties and challenges, and you always do your best and find great solutions for us. It is really nice. We appreciate it. It's only the beginning.”
- Oleg
“I was planning for a small project with a limited budget; my good luck drove me to RadicalStart. Amazing how they are, very nice, professional, perfection-oriented people, and well-organized. All I had to do was tell them what I wanted and they brought my dreams to reality with the most exceptional results. All I can say now is, my work and my projects, are gonna be exceptional.”
- Asaad
“My partner and I had a great idea for business. As it turns out, you guys had that product we wanted and needed. We got to you by a friend's recommendation and we instantly clicked and we were very happy that you could provide us the tool that we wanted and needed for our business. We had a great team and they're helping us a lot. They have a very good response.”
- Jorge
“I know during this time, RadicalStart is showing exceptional adaptability to market changes; always maintaining the commitment to the quality. We want to thank everyone who is a part of RadicalStart for their work and dedication. Without your effort and passion, this achievement wouldn't be possible. On behalf of all of us at Trineo app, we express our deep gratitude for your outstanding product and service.”
- Michael Leppe
“I started my project with you guys this year. I want to say this has been a very amazing experience and you are all very professional, and very talented, and you have helped me to design my app the way I want with so many customization. Thank you so much. I wish you to become the most successful company in India and the world. Thanks, Gowtham for your amazing ongoing Support.”
- Usman
“As we know, we're in production, we're in live, it's because of you and because of us, and because of a great collaboration. So we are proud to make such a great product with you, we want to thank you for your time and enthusiasm. We always have a lot of difficulties and challenges, and you always do your best and find great solutions for us. It is really nice. We appreciate it. It's only the beginning.”
- Oleg
Our Tech Stack Expertise
NestJS
Express.js
Next.js
Node.js
GraphQL
React
Flutter
MySQL
PostgreSQL
NestJS
Express.js
Next.js
Node.js
GraphQL
React
Flutter
MySQL
PostgreSQL
NestJS
Express.js
Next.js
Node.js
GraphQL
React
Flutter
MySQL
PostgreSQL
Have questions? Not anymore
The timeframe depends on complexity. Simple MVPs often take 2–4 months, while more advanced apps can take 6–12 months or more. We’ll provide a clear timeline after understanding your project goals.
Cost varies with features, platforms, and integrations. We’ll share detailed cost estimates once we scope your project.
Yes. We offer custom web apps to native iOS and Android development. You can choose a single platform or opt for full cross-platform coverage from day one.
