iPhone and iPad apps
Native Swift apps that follow Apple's design guidelines and use features such as widgets, Apple Pay and Apple Watch. We prepare and manage App Store submission for you.
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An App Development Company in Austin You Can Meet in Person
SIZ Group designs and builds iPhone, Android and cross-platform apps from our office at 9614 N Lamar Blvd in North Austin. Sit down with the people building your product, then keep working with them on your own clock.
678apps built
465+clients
Top 4%developer intake
10M+downloads by client users
From $4,500free scoping call
Overview
Austin App Developers on North Lamar
Choosing an app development company in Austin should give you something a remote agency cannot: the option to sit across the table from the people building your product. Our team works out of Suite 135 at 9614 N Lamar Blvd, and we welcome client meetings there for kickoffs, design reviews and launch planning.
SIZ Group has been building apps since 2018. Since then we have designed and developed 678 apps for more than 465 clients across the United States, and apps we built for clients have passed 10 million downloads combined. Austin is where the work happens, and where you can see it happen.
Being local matters most at the moments where nuance gets lost on video calls. Walking through a prototype on a real phone, sketching a tricky flow on a whiteboard, or agreeing what to cut from version one when a deadline tightens all go faster in a room. The rest of the project runs remotely with regular demos, so you only drive in when it is worth the trip.
Local also means accountable. You know where we work, you can put a face to every name on your project, and you can call our office at +1 254 323 2698 during Texas business hours. For founders who have been burned by an agency that disappeared after launch, that matters as much as any line of code.
What we deliver
What Our Austin App Developers Build
Full mobile product work, planned and built from our Austin office.
Android apps
Native Kotlin apps with Jetpack Compose, tested across a range of phones, tablets and foldables before they go to Google Play.
Cross-platform apps
Flutter or React Native when one codebase serving both stores is the smarter trade for your budget and timeline.
Prototypes for pitches and pilots
Clickable prototypes you can put in front of investors, partners or a first group of users before committing to a full build.
Backends and admin panels
The APIs, databases and dashboards that power the app and let your staff manage orders, content and users.
Maintenance and updates
Ongoing fixes, OS updates and new features after launch, from the same team that built the app.
Why SIZ Group
Why Texas Businesses Work With an App Development Company in Austin
Austin has grown into one of the most active technology cities in the country, with startups, university research and large tech employers all drawing on the same talent pool. That ecosystem shapes how we work: product-minded, comfortable with fast iteration, and used to clients who know their market well.
For businesses across the state, working with iOS and Android developers in Texas means no time zone math and no overnight waits for answers. We are on Central Time, so your questions get answered during your working day. Clients in Dallas, Houston and San Antonio share our clock, and a drive to Austin for a key workshop is a realistic option.
Talk to us- In-person meetingsKickoffs, design reviews and launch planning can happen at our North Lamar office whenever you prefer to meet face to face.
- Central Time hoursCalls, updates and support run on Texas business hours, which also overlap comfortably with both US coasts.
- Careful hiringOnly the top 4% of developer applicants join the team, and together we bring more than 10 years of collective experience.
- One accountable teamDesign, development, testing and launch sit with the same group, so you always know who to call.
How we work
Working With Us From Our Austin Office
One team from first call to launch, with demos at every milestone.
01
Kickoff at North Lamar or online
We start with a conversation about your users, goals and constraints, in our office or on a call. You leave with a concept and a clear list of open questions.
02
Strategy and design review
We map every screen and build a clickable prototype, then review it with you on real devices. You are welcome to hold this session in person at our office.
03
Development with weekly demos
We build in short cycles and send working builds to your phone through TestFlight or a Google Play testing track. Demos are scheduled during Central Time working hours.
04
Testing and tweaks
We test across devices, OS versions and network conditions, then fold in feedback from your own testers. Nothing goes to the stores until you have signed off.
05
Launch and local support
We submit to the App Store and Google Play and handle any review questions. After launch the same team stays on for updates, fixes and new features.
Tech stack
The Tools Our Austin Team Uses
Platform-native tools and proven cross-platform frameworks.
SwiftSwiftUIKotlinJetpack ComposeFlutterReact NativeTypeScriptNode.jsFirebasePostgreSQLFigmaTestFlightGoogle Play Console
Who it's for
App Types We Design and Build
Restaurants and food
Restaurant finders, table booking and food ordering apps, along with grocery delivery featuring live order tracking.
Retail and ecommerce
Branded store apps with catalogs, carts and checkout. Our designs include sports gear, workspace furniture and gaming gear stores.
Transport and automotive
Driver booking flows and car marketplaces with listings, filters and messaging between buyers and sellers.
Travel and outdoors
Travel discovery and hiking trail apps with maps, saved routes and location features built to respect battery life.
Pricing
App Development Cost in Austin
Working with a local team does not change what drives cost: the number of user roles, how complex the backend is, which third-party systems the app connects to, and if you need iOS, Android or both. A focused first release is the most reliable way to keep the budget under control.
What being in Austin does change is how quickly decisions get made. A scope question that would take days of back and forth by email can often be settled in one meeting at our office, which saves rework later in the project.
Mobile apps start at $4,500. The final price depends on scope and is confirmed in writing after a free consultation, which you can book in person at our North Lamar office or by phone at +1 254 323 2698.
Mobile apps start at
$4,500
Every project is scoped on a free call and confirmed in writing before work starts.
- Fixed scope and clear milestones
- Design, build, testing and launch
- Post-launch support available
Recent designs
All case studiesApps our team has designed
Where is your Austin office?+
We are at 9614 N Lamar Blvd, Ste 135, Austin, TX 78753. Please book a time before visiting so the right people from your project are there to meet you.
Why choose an app development company in Austin over a remote agency?+
You get the option to meet face to face for the decisions that matter, and day-to-day communication on Central Time. Everything else, from builds to demos, works just as well remotely when you prefer.
Do you only work with Austin businesses?+
No. We serve clients across the United States. Austin and Texas clients simply have the added option of in-person meetings at our office.
Are your mobile app developers Austin TX based, or outsourced?+
SIZ Group is based in Austin and projects are run from our office here. You work with the same designers and developers from kickoff through launch and support.
Can we meet before signing anything?+
Yes. The first consultation is free and can take place at our office or by call. We use it to understand your idea, suggest a platform and outline the scope.
What kinds of apps do you build?+
Native iPhone and Android apps, cross-platform apps in Flutter or React Native, prototypes, and the backends that support them. Our designs span food ordering, delivery, marketplaces, retail and travel.
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Let's make it happen
Meet Our Team in Austin
Book a free consultation at our North Lamar office or by phone and get a written scope for your app.