App development studio & consultancy

We build AI-native
mobile apps people love.

SAS Stack designs, builds, and ships production iOS apps — from a napkin sketch to the top of the App Store charts. We've done it for our own products. Now we do it for yours.

3+apps shipped on the App Store
AI-firstvision, LLMs & on-device ML
0→1idea to launch, end to end

Built & shipped by SAS Stack

What we do

Everything it takes to ship a great app.

One team for product, design, engineering, and AI — so nothing gets lost in the handoff.

📱

iOS App Development

Native Swift & SwiftUI apps built for performance, polish, and the App Store review queue. From MVP to scale.

AI & ML Features

Photo-to-data, LLM assistants, computer vision, and on-device intelligence — the AI features that make modern apps feel magic.

🎨

Product & UX Design

Interfaces that are clear, delightful, and conversion-focused. We design the whole experience, not just the screens.

🔌

Backend & Integrations

APIs, auth, payments, and integrations like Apple Health & Google — built to be reliable and easy to maintain.

🚀

Launch & Growth

App Store optimization, landing pages, analytics, and the release process — we get you live and keep you improving.

🧭

Fractional Product Team

Need senior product + engineering muscle without hiring? Plug us in as your on-demand app team.

Selected work

Apps we built and shipped ourselves.

We're an operating studio — we live with the same constraints we solve for clients.

How we work

A clear path from idea to launch.

Tight feedback loops, working software early, no agency bloat.

01

Discover

We pin down the problem, users, and what "done" looks like — then scope a sharp first version.

02

Design

Rapid prototypes and a real UI you can tap, so we validate the experience before we build it.

03

Build

Native engineering in weekly sprints, with the AI and backend wired in as we go.

04

Launch & Scale

App Store submission, analytics, and iteration — we stay on to grow it, not just hand it off.

Let's build

Have an app idea worth shipping?

Tell us what you're building. We'll come back with a clear plan, a timeline, and a fixed first milestone — usually within two business days.