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Custom Software

Mobile & Cross-Platform App Development in Seattle

Most mobile app development companies build for one platform at a time. We build cross-platform apps from a single codebase, so your product runs on the web, iPhone, and Android at once — custom software designed and shipped by a local Greater Seattle team.

01 · What You Get

What our web & mobile app development covers

We are a custom-software shop first, so a mobile app is rarely the whole job — it is usually one face of a system that also includes a web app, a portal, and an admin backend. Here is what a typical engagement includes.

Cross-platform web app development

We build one codebase that ships to the browser, iOS, and Android instead of maintaining three separate apps. Cross platform web app development means your features, fixes, and design stay in sync everywhere — and your budget goes to building, not to duplicating work three times.

Native-quality mobile UX

Cross-platform does not mean compromise. We tune navigation, gestures, offline behavior, and push notifications so the app feels right on a phone — not like a website crammed into an app shell.

Web app + admin backend

Behind almost every app is the part your team actually lives in: dashboards, user management, content tools, and reporting. We build the customer-facing app and the internal admin together so the whole product is coherent.

API integration & payments

We connect to the tools your business already runs on — Stripe and payment processing, CRMs, scheduling, mapping, email and SMS, and any third-party API your workflow depends on.

Accounts, auth & roles

Secure sign-in, password resets, social login, and role-based access so owners, staff, and customers each see exactly what they should — the foundation any real product needs.

Launch, App Store & support

We handle the App Store and Google Play submission process, set up monitoring, and stay on as your maintenance partner. Because the code is local and well-documented, you are never stuck waiting on a vanished offshore team.

02 · Proven Results

A real multi-platform product, built and shipped

We built GottaRent, a property-management web app and tenant portal, as a true multi-platform product — landlords manage listings and applications from a desktop dashboard while renters browse and apply from their phones, all running on one shared codebase. It is a working example of the same approach we bring to mobile app development: one system, multiple devices, real accounts and payments, and software built to keep earning its keep rather than sit on a shelf.

Proven work: GottaRent

03 · The Problem

Why most app projects stall before launch

If you have looked at hiring an agency, you have probably seen the same pattern: a quote for an iOS app, a separate quote for Android, and yet another conversation about a website. Three codebases, three timelines, three teams to coordinate — and the bill climbs fast before a single screen ships. For a small or mid-sized business, that is how a good idea dies in a planning deck.

The other trap is the offshore handoff. You get a low estimate, then spend months in time-zone limbo, re-explaining your business on every call, and end up with code nobody local can maintain. When something breaks, you are stuck, and the rebuild costs more than doing it right the first time.

What you actually want is one product that works everywhere your customers are, built by people you can sit down with in the same time zone. That is the whole point of how we approach mobile app development — fewer codebases, clearer ownership, and software you can grow into instead of throw away.

04 · How We Work

How we take an app from idea to live

/01

Scope & fixed estimate

We start with a short working session to map who uses the app, what it has to do, and which platforms matter on day one. You leave with a clear scope and a written estimate — custom software projects with us typically run $10k–$50k+, and we tell you where yours lands before you commit.

/02

Design & clickable prototype

Before we write production code, we put a clickable prototype in front of you so you can feel the flow on a real phone screen. This is where we settle navigation and the core experience, so there are no surprises later.

/03

Build in working slices

We build the single cross-platform codebase in slices you can use, demoing real, working features every week or two. You watch the web and mobile versions come together side by side instead of waiting months for a big reveal.

/04

Test, launch & hand over

We test across devices, ship to the web and submit to the app stores, and hand over clean, documented code. From there we either support it on a retainer or help your own team take the wheel.

05 · FAQ

Frequently Asked Questions

Look at three things: whether they build cross-platform or quote you separately for each platform, whether the team is local enough to meet and maintain the code afterward, and whether they have actually shipped a real multi-platform product. Plenty of mobile app development companies are good at one of those — we built GottaRent to cover all three, and we work right here in the Greater Seattle area.

Cross platform web app development means writing your app once in a single codebase that then runs on the web, iOS, and Android, instead of building and maintaining three separate apps. You pay for one build and one set of ongoing fixes rather than three, which is why it is usually faster and more affordable for a small business — and why every change stays consistent across devices.

It depends on what the app must do. If you need camera access, offline use, or push notifications, a cross-platform build that installs from the App Store and Google Play is the right call. If your users mostly need it in a browser, a web app — or a progressive web app — can launch faster and cheaper. We will tell you honestly which fits during the scoping call.

For a web & mobile app development company building real custom software, expect a range rather than a flat price. Our custom-software projects typically run from about $10,000 for a focused app up to $50,000 and beyond for a full product with web, mobile, payments, and an admin backend. We give you a written, fixed estimate before any work starts.

A focused app with a clear scope is usually a matter of a couple of months from kickoff to launch; a larger product with payments, multiple user roles, and an admin backend takes longer. Because we build in working slices and demo every week or two, you see and use real features the whole way through instead of waiting for a single launch day.

Yes. You own the code outright, and we hand it over clean and documented. Since we build with a mainstream cross-platform stack and work locally in Washington, any competent developer — or your in-house team — can pick it up later. You are never locked into us or stranded by an offshore shop.
06 · Related

Related services & locations

07 · Get Started

Have an app idea? Let's scope it.

Tell us what you want to build. We'll map the platforms, give you a clear estimate, and show you how one cross-platform codebase gets your product onto the web and into the app stores faster.

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