iOS App Development
Native Swift & SwiftUI apps built for performance, polish, and the App Store review queue. From MVP to scale.
SAS Stack is a US-based studio with founders who've spent 20+ years designing, building, and shipping production apps. We take clients from idea to launch with senior engineers, tight timelines, and zero handoffs overseas.
One senior US-based team for product, design, engineering, and AI — so nothing gets lost in a handoff or shipped to the lowest bidder.
Native Swift & SwiftUI apps built for performance, polish, and the App Store review queue. From MVP to scale.
Native Kotlin and cross-platform builds that feel right at home on Android — tested across the devices your users actually own.
Fast, modern web apps and customer portals — React front ends, solid APIs, and dashboards your team will actually use.
Photo-to-data, LLM assistants, computer vision, and on-device intelligence — the AI features that make modern apps feel magic.
Interfaces that are clear, delightful, and conversion-focused. We design the whole experience, not just the screens.
APIs, auth, payments, analytics, and app-store launch — built to be reliable, and supported well past release day.
Most agencies sell you a senior pitch and staff your project overseas. We don't. The people you meet on the first call are the people who build your app.
Every line of code, every design, every deliverable is produced in-house in Los Angeles, California. We never offshore or outsource work — your IP stays here, and so does accountability.
Our founders have spent over two decades building and shipping production software — for startups, enterprises, and our own products. Your project is led by people who've done this many times before.
Small senior teams move fast. You'll see a working build in weeks, not months — with weekly demos so there are no surprises at the end.
No account managers, no ticket queues, no time-zone gymnastics. You talk directly to the engineers and designers doing the work, in your working hours.
We're an operating studio, not just a vendor — we build and run our own products under the same deadlines and quality bar we bring to client work.
Health & Fitness
Snap a photo of your meal and get calories and macros in seconds. Tracks food, workouts, and activity — synced with Apple Health & Google.
Social & Gaming
Fantasy sports for real life. Battle your crew, log food, drinks, and steps by photo, and let AI keep everyone honest on a live leaderboard.
Education (K-6)
Math learning made fun for kids — interactive drills, word problems, and AI-powered homework help with friendly voice guidance.
Tight feedback loops, working software early, no agency bloat. Most projects see a tappable build within the first few weeks.
We pin down the problem, users, and what "done" looks like — then scope a sharp first version with a fixed timeline.
Rapid prototypes and a real UI you can tap, so we validate the experience before we build it.
Senior engineers building in weekly sprints, with the AI and backend wired in as we go — and a demo every week.
App Store, Google Play, or web deploy, plus analytics and iteration — we stay on to grow it, not just hand it off.
Tell us what you're building — iOS, Android, or web. Our US-based senior team will come back with a clear plan, a timeline, and a fixed first milestone, usually within two business days.