Second Number

No SIM neededPrivate lineGlobal calls

Call and text from anywhere on your device without a SIM card, using a private virtual number.

Download on the App Store

Industry

Communication

Services used

UX/UI DesigniOSBackend

Project overview

Second Number gives users a private virtual line for work, travel or dating — fully separate from their real number.

Challenges

Provisioning virtual numbers and reliable calling across regions while keeping onboarding effortless.

Our approach

We designed a clean number-management flow and built the calling stack with a resilient telephony backend.

Scope of work

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

UX Research

UX Design & Prototype

UI design

Engineering (setup)

Core feature build

Integrations & syncing

Backend development

Preparations and publishing

Final Results

Second Number launched as a dependable second line with global coverage and a frictionless setup flow.

Next case

UpYou

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FAQ. Want to know more?

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.