Second Number

Mobile app with virtual number for SMS and calls

Industry

Communication

Services used

UX/UI DesignTwilioFirebaseAppsFlyer

Project overview

Second Number is a mobile app that lets users get a virtual number for calls and texts without needing a second SIM card. It's a simple, secure solution for managing multiple phone numbers on one device.

Challenges

We needed to create a seamless, intuitive interface that made managing multiple numbers feel natural, while also supporting international calling and ensuring data privacy.

Our approach

Our team focused on delivering a clean, user-friendly design backed by strong backend architecture. We built the app using Flutter for the front end and PHP for the backend, supported by a custom admin system for efficient management.

Scope of work

Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9

Research/requirements

Prototype/design

Development

Testing

Publishing

Key Features

Stop SMS spam

Protect your privacy by using our thousands of disposable virtual phone numbers

Bypass SMS verification

Long and short term rentals available for all of our non-voip numbers. You'll never have to use your real number again online

Anonymous & secure

All data is encrypted to ensure you remain private and protected from online companies.

Build & automate

Explore our comprehensive API to seamlessly integrate and scale your applications with our phone numbers

Crafted for Simplicity and Usability

As a result we got this app

Final Results

Second Number is a reliable, user-centric app that allows easy access to an additional number for personal or business needs. The project was completed with a focus on intuitive design, performance, and functionality.

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Frequently asked questions

What services do you offer?

We are a U.S.-based agency specializing in web and mobile solutions. Our services include: - User interface and experience design for mobile apps, websites, and web applications - Development of iOS, Android, and web applications tailored to your business needs

How much do you charge for your services?

Pricing depends on scope and complexity. We offer fixed quotes for clearly defined projects and monthly retainers for ongoing product work. After a short discovery call we send a detailed estimate.

Do you offer post-launch support?

Yes. We provide dedicated support plans covering monitoring, technical assistance, and ongoing enhancements so your product stays stable after release.

Will you sign a confidentiality agreement?

Absolutely. We're happy to sign an NDA before we discuss any sensitive details of your idea.

Can my app be developed for both iOS and Android?

Yes. We build native apps for iOS and Android, as well as cross-platform apps with Flutter when that's the better fit for your goals and budget.

Can I start with a basic version of the app and scale later?

Definitely. We recommend launching a focused MVP first, then iterating with new features based on real user feedback.

How do I choose between native and cross-platform app development?

It depends on performance needs, timeline, and budget. We'll walk you through the trade-offs and recommend the approach that best fits your product.

How do I secure funding for my startup app?

A polished MVP, clear metrics, and a strong pitch go a long way. We can help you ship an investor-ready product and prepare supporting materials.

What makes your UX design process stand out?

We start from research and real user flows, validate with prototypes, and design interfaces that balance user expectations with your business objectives.