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RapidDev - Software Development Agency
App developers in Seattle, WA

Mobile & web app development in Seattle

RapidDev builds custom mobile and web apps in Seattle, typically shipping a production MVP in 6–12 weeks for a fixed $13,000–$25,000. That is a fraction of the cost of hiring an in-house team in Seattle (roughly $470,000 a year for two senior engineers) or commissioning a Seattle agency ($150,000–$400,000 per build). One team ships the iOS app, the Android app, and the web app on shared infrastructure, and the founder owns all of the code.

One team for your iOS, Android, and web build. We help Seattle founders go from a Figma file or a Lovable prototype to a production app your users — and your investors — actually trust.

  • 600+ apps shipped
  • 4.9 on Clutch
  • Ex-Amazon / Microsoft caliber
  • Fixed-price, no surprises
4.9Clutch rating
600+Happy partners
17+Countries served
190+Team members

Why building in Seattle is different

Seattle isn't just another tech market — it's the birthplace of the cloud, home to both AWS and Azure, and the second-largest concentration of AI talent in the country. Greater Seattle companies raised roughly $24.5 billion in venture capital between 2021 and 2024, and the metro consistently ranks in the top five US ecosystems for startup funding. That heritage changes what a launch has to be: your investors are ex-Amazon and ex-Microsoft operators who have shipped at planetary scale, and the exact engineers you'd want to hire are being outbid by the two biggest employers in the region. We build for that reality — the cloud-native architecture that survives technical diligence, the reliability Seattle users take for granted, and the speed to ship before your runway or your competitors force the issue.

The AI capital nobody talks about

Seattle is the #2 US metro for AI, anchored by the Allen Institute for AI and its AI2 Incubator, which spins out technical founders in NLP, computer vision, and enterprise AI. In 2025 the city, AI2 Incubator, and local partners opened AI House on the waterfront to connect researchers, founders, and investors. If you're building an AI product here, you're in the deepest talent pool outside the Bay Area — and the most fundable AI category in the region.

You're hiring against Amazon and Microsoft

The upside of Seattle's talent density is world-class engineers; the downside is that Amazon and Microsoft are bidding for the same people, with total-comp packages north of $270K. A senior startup hire takes 50–70 days to land and commands ~$160K in base alone. Bringing us in lets you ship your v1 now and hire deliberately later, from traction rather than desperation.

Cloud-native is the house style

This is the city that invented AWS and Azure, so 'cloud-native, DevOps-first' isn't a buzzword here — it's table stakes. Seattle investors and pilot customers expect infrastructure that scales cleanly and a security posture that holds up. We build on the same managed-cloud foundations (Supabase, Vercel, Postgres) so your architecture reads as credible to a room full of ex-cloud engineers.

A venture scene without a safety net

Madrona Venture Group, Pioneer Square Labs, Voyager, and Flying Fish anchor the local capital, and Founders' Co-op still seeds early teams — but the closure of Techstars Seattle left a real gap in early-stage mentorship and checks. Founders here move fast and lean, which is exactly the tempo a weekly-deployed build is designed for.

the Puget Sound region by the numbers

VC raised by Greater Seattle companies, 2021–2024
$24.5B
VC raised by Greater Seattle companies, 2021–2024
Greater Seattle Partners, 2025
Venture capital invested in Greater Seattle annually
~$2–3B
Venture capital invested in Greater Seattle annually
Greater Seattle Partners, 2025
US metro for AI jobs and innovation
#2
US metro for AI jobs and innovation
Greater Seattle Partners, 2025
Seattle AI startup funding, Jan–Aug 2025
$679M
Seattle AI startup funding, Jan–Aug 2025
Greater Seattle Partners, 2025
Deployed into local startups by Madrona Venture Group
$2B+
Deployed into local startups by Madrona Venture Group
Madrona / GeekWire, 2025
US ecosystem rank for startup venture funding
Top 5
US ecosystem rank for startup venture funding
GeekWire / Greater Seattle, 2025

Who we build for in the Puget Sound region

AI & Cloud

LLM and cloud-native products built by ex-Amazon and ex-Microsoft founders — the category the AI2 Incubator and AI House are pouring fuel on right now.

B2B & Enterprise SaaS

Multi-tenant dashboards, admin panels, and developer tooling for Seattle's deep bench of enterprise-software and DevOps startups.

Logistics & Supply Chain

Tracking, routing, and marketplace apps for a metro built on Amazon, the Port of Seattle, and a dense freight and maritime economy.

Health & Life Sciences

HIPAA-aware patient and provider apps for the corridor around Fred Hutch, UW Medicine, and the Gates Foundation's global-health orbit.

Fintech

Payments, lending, and neobanking apps that need Stripe, real compliance, and rock-solid security — Seattle's fastest-growing new vertical.

Commerce & Marketplaces

Two-sided platforms with payments, matching, and ratings, built in the city that wrote the book on online retail.

What kind of apps can you build in Seattle?

RapidDev builds native and cross-platform mobile apps, Next.js web apps and dashboards, full MVP-to-scale product builds, and production AI features for Seattle founders — mobile and web ship from one team on shared cloud infrastructure.

No stitching together an app shop and a web agency. We scope and ship your iOS, Android, and web product on shared infrastructure — so everything actually works together.

Mobile

Native & cross-platform mobile apps

One codebase, both stores. We build React Native and Expo apps that pass App Store and Play Store review the first time, with the native feel your users expect.

  • iOS + Android from a single React Native / Expo codebase
  • Push notifications, offline mode, and deep linking
  • App Store & Play Store submission handled end-to-end
  • Crash reporting, analytics, and OTA update pipeline
Web

Web apps & dashboards

Fast, SEO-ready web apps on Next.js. From investor-facing marketing sites to the logged-in product itself — dashboards, admin panels, and customer portals.

  • Next.js app with server rendering and clean SEO
  • Role-based dashboards and internal admin tooling
  • Stripe billing, subscriptions, and usage metering
  • Analytics, A/B testing, and conversion instrumentation
Mobile + Web

MVP-to-scale product builds

The whole thing, mobile and web, on shared cloud infrastructure. Ideal when you're moving off a Lovable or Bubble prototype that's hit its ceiling and need production code that raises well in a cloud-native town.

  • Shared Supabase / Postgres backend across web + mobile
  • Auth, payments, and a real data model built to scale
  • Migration off no-code prototypes without losing your data
  • Handover docs so your future in-house team can take over
Mobile + Web

AI features & integrations

Ship the AI feature your product actually needs — chat, search, or agents — wired to your data with streaming, evals, and cost controls, not a demo that falls over in front of Seattle's AI-literate investors.

  • LLM chat, RAG, and semantic search over your own data
  • Streaming UIs on both web and mobile
  • Usage-based billing and per-customer cost guardrails
  • Evals and monitoring so quality doesn't drift

How we work — no black boxes

You see a working, deployed build every single week. Here's the exact path from a first call to a launched app — five steps, no surprises.

  1. Step 145 min

    Free scope call

    We map your idea (or your stuck prototype) to a concrete feature list, a fixed price, and a timeline. You leave with a plan whether or not you hire us.

    What you get

    A fixed price + timeline

  2. Step 2Week 1–2

    Design & architecture

    Clickable Figma flows and a cloud-native technical architecture you sign off on before a line of production code is written. No surprises later.

    What you get

    Clickable Figma + signed-off architecture

  3. Step 3Week 2–10

    Build in weekly sprints

    You get a working, deployed build every single week — not a black box. Test on real devices, give feedback, watch it take shape.

    What you get

    A deployed build every week

  4. Step 4Final week

    Launch & handover

    We handle App Store and Play Store submission, production deploy, and a full handover — code, docs, and access are yours to keep.

    What you get

    Live app + all code and access

  5. Step 5Optional

    Ongoing support

    Keep us on a retainer for new features and fixes, or take the wheel with your own team. Your call — we don't lock you in.

    What you get

    A retainer — or a clean exit

The stack we build on

Production-grade, boring-in-the-best-way tools that your future in-house team can hire for and maintain. No lock-in, no proprietary magic.

React NativeMobile
ExpoMobile
Swift / KotlinMobile
Next.jsFrontend
ReactFrontend
TypeScriptFrontend
Node.jsBackend
SupabaseBackend
PostgreSQLDatabase
Clerk / Auth.jsAuth
VercelHosting
OpenAI / AnthropicAI
StripePayments

How much does it cost to build an app in Seattle?

Building a custom app in Seattle costs anywhere from $13,000 with RapidDev to over $400,000 with a large agency, depending on who builds it. Here is the honest math on the four realistic paths — with real 2025 Seattle numbers, not a vendor's guesswork.

Hire a team in-house in Seattle

~$460K – $510K / yr

true first-year cost of a minimal 2-engineer team

3–5 months just to hire, then build
  • Full-time institutional knowledge stays in-house
  • Direct control over roadmap and priorities
  • Right long-term move once you're past product-market fit
  • Senior Seattle base salaries alone run ~$160K each — loaded cost is ~1.4x with benefits, payroll tax, equity and tooling
  • You're competing with Amazon and Microsoft for the same engineers, who take 50–70 days to land, plus 15–30% recruiter fees per hire
  • You're paying full salaries for months before a single feature ships
  • Two people can't cover iOS, Android, web, design and DevOps

Big Seattle / US agency

$150K – $400K+

typical price for a comparable custom build

4–9 months
  • Deep bench, senior talent, established process
  • Can handle very large, complex enterprise scope
  • 6–15x our price for a comparable v1 — you fund their overhead and account managers
  • Long timelines and heavyweight process before anything ships
  • Change requests are billed; scope creep gets expensive fast
  • Overkill for a founder shipping a fundable v1

Offshore / freelance

$25 – $50 / hr

typical Eastern Europe / LatAm blended rate

Highly variable — often 2–3x quoted
  • Lowest sticker price per hour
  • Fine for well-specced, low-risk pieces of work
  • 8–12 hour timezone gap turns a one-day fix into a week
  • Rework is common — cheap hourly gets expensive when it's built twice
  • IP ownership and security review often can't survive investor diligence
  • No single accountable owner when something breaks
Our recommendation

RapidDev

$13K – $25K

fixed price, quoted before we start

6–12 weeks to a live, submitted app
  • Fixed price with no hourly billing and no surprises
  • One team ships iOS, Android, web and design together
  • A working, deployed build every single week
  • Production-grade code you own outright — investor-diligence ready
  • 10–35x cheaper than in-house or agency for a comparable v1
  • Not the right fit for a 30-engineer enterprise platform build
  • Best for a focused, fundable v1 — not an open-ended R&D contract
Book a free scope call
Cost and timeline to build a custom app in Seattle: hiring in-house versus an agency, offshore, or RapidDev.
PathTypical costTime to first shipped product
Hire a team in-house in Seattle~$460K – $510K / yr3–5 months just to hire, then build
Big Seattle / US agency$150K – $400K+4–9 months
Offshore / freelance$25 – $50 / hrHighly variable — often 2–3x quoted
RapidDev$13K – $25K6–12 weeks to a live, submitted app

The numbers behind this, sourced

$145K
Seattle software engineer median base salary
Salary.com / Gusto, 2025
$176K
Greater Seattle entry-level engineer median total compensation
Levels.fyi, 2025
$145K
Seattle React Native developer average salary (top-paying US market)
Wellfound / 6figr, 2026
$124K
Seattle iOS developer average base salary
Salary.com, 2025
50–70 days
Time to fill a senior engineering role
SHRM Benchmarking, 2025
15–30%
Recruiter fee on first-year salary, per hire
Dover / daily.dev, 2025

For the price of two to three months of one Seattle engineer's loaded salary, RapidDev ships your entire app — mobile, web, and backend — in 6 to 12 weeks.

What does app development cost in Seattle?

App development in Seattle with RapidDev costs a fixed $13,000–$25,000, quoted before any code is written rather than billed by the hour. A focused single-platform MVP starts at $13,000; a full mobile-plus-web product with payments and AI features runs up to $25,000.

You get a fixed price before we write a line of code — quoted, not billed by the hour. Every Seattle build lands in the $13K–$25K range depending on scope.

Focused MVP

$13K – $16K
4–6 weeks

Solo founders and pre-seed teams validating one core flow with real users.

  • One platform — web or mobile
  • Core feature set, auth, and a clean UI
  • Deployed to production + store submission
  • Weekly builds and a working demo every sprint
Book a free scope call
Most popular

Launch-ready product

$17K – $21K
6–9 weeks

Seed-stage startups shipping a fundable v1 to the App Store and the web.

  • Mobile + web on shared infrastructure
  • Payments, notifications, and analytics wired in
  • Design system and investor-ready polish
  • App Store & Play Store submission handled
Book a free scope call

Scale build

$22K – $25K
9–12 weeks

Series A teams replacing a no-code MVP or adding serious AI features.

  • Complex data models, roles, and admin tooling
  • AI features with evals and cost controls
  • Migration off Lovable / Bubble / Bolt prototypes
  • Full handover docs for your in-house team
Book a free scope call

Recent work in the Puget Sound region

A few of the builds we've shipped for Seattle founders. Details generalized to protect client confidentiality.

AI & Cloud
3.4xfaster response render

Challenge: A Seattle founder's LLM workflow tool demoed well but fell over under load and had no way to bill customers for usage before their first raise.

What we shipped: We shipped a streaming chat UI, added vector search over their docs, and wired per-customer usage metering into Stripe on a cloud-native stack that cleared investor diligence.

Next.jsOpenAIpgvector
Logistics & Supply Chain
0data lost in migration

Challenge: A team serving Port of Seattle freight brokers had a Bubble MVP that couldn't handle real-time tracking or scale past its first customers.

What we shipped: We migrated their data into a proper Postgres schema and rebuilt the product as native iOS + Android with live tracking, so they could onboard enterprise accounts.

React NativeSupabasePostgreSQL
Health & Life Sciences
9 wksprototype → clinic pilot

Challenge: A founder near the UW Medicine / Fred Hutch corridor had a Lovable prototype for a patient-intake app but couldn't pass a security review to onboard their first clinic pilot.

What we shipped: We rebuilt the backend on Supabase with real RLS, added HIPAA-aware auth, and shipped native iOS + Android — clearing the pilot's security checklist.

React NativeSupabaseClerk

The team behind your build

190+ people across 17 countries, a 4.9 rating on Clutch, and 600+ apps shipped. Here's the leadership standing behind your build.

Matt Graham, CEO & Founder at RapidDev

Matt Graham

CEO & Founder

Founder of RapidDev, a global software firm whose team has delivered 1,000+ client projects. He helps founders cut through the hype and ship practical, production-grade software — fast.

Columbia University · Harvard Business School · U.S. Navy veteran · 1,000+ client projects

Matt on LinkedIn

Anna

COO

Runs operations across RapidDev's 190+ person, 17-country team — the person making sure your build ships on time and on scope.

Craig

CTO

Owns the technical bar for every build: the architecture, code quality, and security review that has to survive investor diligence.

Maria

Dev Lead

Leads the engineers who ship your weekly builds across iOS, Android, and web on shared infrastructure.

Frequently asked questions

Do you build both the iOS/Android app and the web app, or just one?

Both — that's the whole point of working with us instead of stitching two vendors together. We build your mobile app (iOS and Android from one React Native codebase) and your web app on shared infrastructure, so your data, auth, and payments live in one place instead of three.

We built a prototype in Lovable / Bubble / Bolt. Can you take it over?

Yes, and it's one of the most common reasons Seattle founders come to us. No-code prototypes are great for validation but hit a ceiling on security, scale, and hiring. We migrate your data into a real database and rebuild the product in production-grade, cloud-native code you own — usually without losing any of your existing data.

How much does an app cost, and how is it priced?

Most builds land between $13,000 and $25,000, quoted as a fixed price before we start — not billed by the hour. After a free 45-minute scope call we send a concrete feature list, price, and timeline. The band depends on scope: a focused single-platform MVP sits near the bottom, a full mobile + web product with payments and AI features toward the top.

How long does it take to launch?

Typically 6–12 weeks from kickoff to a live, submitted app. A focused MVP can ship in 4–6 weeks; a full mobile + web product with AI features runs closer to 9–12. You get a working, deployed build every week, so you're never waiting months to see progress.

Do we need to meet in person in Seattle?

No — we work with Puget Sound founders remotely and asynchronously, which is how most Seattle teams operate anyway. You'll have a dedicated point of contact, weekly demos, and a shared board. If you prefer a video kickoff or working sessions, we're happy to schedule around Pacific time.

Who owns the code and the App Store accounts?

You do — completely. The code lives in your GitHub, the App Store and Play Store listings are under your accounts, and we hand over full documentation at launch. We never hold your product hostage, and you're free to bring the work in-house or hire your own team whenever you want.

Can you help us ship something investor-ready before our raise?

That's a big part of what we do for seed and Series A teams here. Seattle investors are often ex-Amazon and ex-Microsoft operators who expect a real product and a credible cloud architecture — so we prioritize the flows that demo well, ship reliable polish, and make sure the foundations hold up to technical diligence. Many of our clients raise on the version we ship.

What if we're not technical? Can we still work with you?

Absolutely — most of the founders we work with are non-technical or first-time technical founders. We handle every technical decision, explain trade-offs in plain English, and give you a product you can maintain or hand to a future CTO. You focus on customers and fundraising; we handle the build.

How can you be so much cheaper than hiring in-house or a Seattle agency?

It comes down to structure, not corners cut. We scope a fixed set of features up front, so there is no open-ended hourly meter. A small, senior-only team does the work directly — you are not paying for account managers, sales overhead, or junior engineers learning on your budget. And we reuse hardened production patterns for auth, payments, and infrastructure instead of rebuilding them each time. An in-house team carries full salaries, benefits, and months of ramp-up before anything ships — and in Seattle you're bidding against Amazon and Microsoft to land those hires in the first place. We simply do not carry those costs.

What happens if something breaks after launch?

Every build includes a 30-day bug-fix window after launch — if something we shipped breaks, we fix it at no extra cost. Beyond that, you can keep us on an optional monthly support retainer for ongoing fixes and new features, or take the code in-house and maintain it yourself. You own the code either way, so you are never locked in.

What if I want to change something mid-build?

Small adjustments within the agreed scope are just part of the weekly sprint — you review a working build every week and give feedback we fold in. If you want to add or swap something bigger that changes the scope, we handle it with a simple change order: we tell you the price and timeline impact before doing the work, you approve it, and only then do we build it. No surprise invoices, and no silent scope creep.

Book your free scope call

Pick a time and get your fixed price

Grab a 45-minute slot with our team below. We'll map your idea — or your stuck Seattle prototype — to a concrete feature list, a fixed $13K–$25K price, and a timeline. You walk away with a real plan either way.

  • A free 45-minute scope call — no obligation, no sales pressure
  • A fixed price and timeline before any code is written
  • You leave with a concrete plan, whether or not you hire us

Prefer email? Contact us instead.

On the map in Seattle

Find RapidDev in Seattle

We serve founders across Seattle and the Puget Sound region — from first scope call to a launched, submitted app. Our Google Business Profile below is the quickest way to see us on the map, save us for later, or leave a review after we ship.

View our Seattle profile on Google Maps

Remote-friendly · Serving the greater the Puget Sound region area

Ready to build your app in Seattle?

Book a free 45-minute scope call. You'll walk away with a concrete feature list, a fixed price, and a timeline — whether or not you decide to work with us.

Serving Seattle and the Puget Sound region · Remote-friendly · You own everything we build

We put the rapid in RapidDev

Need a dedicated strategic tech and growth partner? Discover what RapidDev can do for your business! Book a call with our team to schedule a free, no-obligation consultation. We'll discuss your project and provide a custom quote at no cost.