Austin, TX Mobile app studio since 2018

We build apps that do more.

Strategy, design and serious engineering under one roof. We take your idea from first sketch to the App Store and Google Play, then keep it growing.

678apps built
465+clients served
Top 4%developer intake
We ship on
  • iOS
  • Android
  • Flutter
  • React Native
  • Wearables
  • Web3
Not just an app company

Bold ideas, turned into apps people actually keep on their phones.

We are a team of designers and developers who think building an app should be clear, fast and even fun. Startup or enterprise, game or internal tool, you get the same care, the same senior attention and one team that stays with you after launch day.

678Apps designed and developed
465+Clients powered
10+Years of collective experience
4%Of developer applicants make the team
What we build

Services we excel in

One partner for every platform your users are on, from the phone in their pocket to the watch on their wrist.

Mobile App Development

Brand new product or a rescue of an existing one, we build apps that feel smooth, look sharp and keep users coming back, on every device.

NativeHybridFlutterReact Native
Car marketplace app screens designed by SIZ Group
02

iOS Development

Sleek, intuitive apps built to Apple's standards and ready to stand out on the App Store.

03

Android Development

Apps tailored to Android's strengths, flexible and ready for a global Play Store audience.

04

Game App Development

Casual to fully immersive. We know what makes a game pop and keeps players hooked.

06

Mobile App Prototyping

Clickable prototypes that show how your app flows, looks and feels before a line of production code.

09

NFT Development

Custom NFT and digital asset apps for art and collectibles that are easy to use and rock solid.

Also building with Flutter, React Native and hybrid

Not sure which approach fits your app? We will recommend the right stack in your free call.

Compare approaches
Selected work

Apps we've designed and shipped

View all case studies →

How we work

Six steps from idea to launch

We don't overcomplicate things. We break the work down, keep you in the loop and make sure it gets done.

01

Kickoff chat

We dig into your vision and goals and map out what the app can become. Think of it as setting the GPS.

02

Concept and strategy

Core features, user flows and the design blueprint. A solid game plan that sets everything in motion.

03

Design and prototype

Our designers craft the look, then we build a working prototype so you can see and feel it early.

04

Development

We code it from the ground up, fast, smooth and functional, ready to impress from day one.

05

Testing and tweaks

Usability, performance and every edge case. We refine until it runs perfectly.

06

Launch and support

We get you live on the stores and stay on for updates, new features and growth.

Why partner with us

A great deal when you partner up.

Years of experience across every part of mobile design and development matter. What really sets us apart is user centred design and honest, open communication from the first call to the hundredth release.

Talk to us
  • End to end, one teamStrategy, design, build, testing and launch without handoffs.
  • Top 4% engineersA strict hiring bar, so senior people write your code.
  • Transparent communicationClear milestones and regular demos, never a black box.
  • Support after launchUpdates, fixes and new features as your user base grows.
Packages

Clear pricing to get you started

Every project is scoped in a free call. These ranges give you a sense of where yours will land.

Website

Fast, mobile first websites and landing pages for your brand or app launch.

From
$300 to $2,200
Get a quote
Core service

Mobile App

Custom iOS, Android or cross platform apps, designed, built and launched.

Starting at
$4,500
Plan my app

Social Media

Content and channel management to grow an audience around your product.

From
$150 to $1,000
Get a quote

Prices in USD. Final cost depends on scope, which we confirm in writing before work starts.

FAQ

Questions, answered.

Still curious? Call +1 254 323 2698 or write to info@sizgroup.com.

What kind of apps do you develop?+

All of them. Android and iOS apps, mobile games, web apps, wearables and cross-platform products. A simple tool or a complex platform, we have you covered.

How much does it cost to build a mobile app?+

Mobile apps start at $4,500. The final price depends on features, platforms and integrations, and we confirm it in writing after a free scoping call.

Can you handle the whole project end to end?+

Yes. Design, development, testing, launch and post-launch support. If you have an idea but don't know where to start, we will walk you through every stage.

Do you offer maintenance after the app goes live?+

Yes. Once your app is live we keep an eye on it, with regular updates, OS compatibility fixes and new features so it keeps up with your users.

Where is SIZ Group based?+

Our office is at 9614 N Lamar Blvd in Austin, Texas. We work with clients across the United States and are happy to meet Austin clients in person.

Let's make it happen

Got an app idea? Let's talk.

Book a free consultation. We'll listen, ask the right questions and come back with a clear plan, timeline and quote.

+1 254 323 2698 info@sizgroup.com
9614 N Lamar Blvd, Ste 135, Austin, TX 78753

Book a free call