# App Development
Canonical: https://agency-os.ai/app-development/
Summary: Native iOS, cross-platform, and web apps shipped by a senior-only team in 14 weeks. $40K–$120K, 100% code ownership, 30 days post-launch support — we build what others quote six months for.

Now accepting new builds

# We build what others quote *six* *months* *for.*

   ![Eric Yerke](/wp-content/uploads/2026/07/eric-yerke.jpg) ![Dr. James Vineburgh](/wp-content/uploads/2026/07/scooter-james-vineburgh.jpeg)

Eric Yerke · Dr. James Vineburgh

Native iOS, cross-platform, and web applications, shipped by a senior-only team in fourteen weeks. No subcontractors. No handoffs. You own every line of code.

  [Start a project](/contact/)  14 weeks to production 100% IP transfer 30 days post-launch support

01Capabilities

## Four disciplines, *one standard.*

    iOS & iPadOS Cross-platform Web apps AI-powered

### Native, and it feels like it.

Swift and SwiftUI, built to Apple’s human interface standards: the kind of app that earns its Home Screen spot. App Store submission, review notes, and launch handled end to end.

 [Start an iOS build →](/contact/)

### One codebase. Every pocket.

React Native and Flutter for teams that need iOS and Android on the same timeline, without paying for two teams or settling for a web view in a wrapper.

 [Scope a cross-platform app →](/contact/)

### Fast where it counts.

React, Next.js, and TypeScript: dashboards, portals, and products that load fast, score green, and hold up under real traffic. Deployed on infrastructure you own.

 [Plan a web build →](/contact/)

### Intelligence, built in.

Products with Claude and GPT working inside them: search that answers, workflows that draft themselves, interfaces that adapt. Applied where it earns its keep, not sprinkled for the demo.

 [Explore AI features →](/ai-agents/)          01

### Concept to App Store in *fourteen weeks.*

The Possibility: transformational coaching built with author Jim Curtis. TestFlight approved, App Store launch September 2026.

   02

### Native on every wrist *and pocket.*

AIZEN: daily rituals on iPhone and Apple Watch, built platform-native with widgets that feel at home.

   03

### Interfaces that *adapt.*

BioNaural: adaptive focus audio that tunes itself to your signal, on iOS and watchOS.

     ![The Possibility iOS app: guided breathing screen](/wp-content/uploads/2026/07/the-possibility-app-guided-breathing-iphone.png) ![AIZEN iOS app: Today's Rituals home screen](/wp-content/uploads/2026/07/aizen-app-daily-rituals-home-iphone.png) ![BioNaural iOS app: Your Signal adaptive audio screen](/wp-content/uploads/2026/07/bionaural-adaptive-focus-audio-your-signal-iphone.png)

14*wks*

## A fourteen-week delivery guarantee. In writing.

 Standard engagement terms · never missed

03The Product

## Every screen, *at home.*

   iPhone Web     ![The Possibility iOS app: guided breathing screen](/wp-content/uploads/2026/07/the-possibility-app-guided-breathing-iphone.png)    agency-os.ai ![Agency OS web platform: AI studio](/wp-content/uploads/2026/07/agency-os.png)

05Selected Work

## A leaner site that *enrolls more.*

We migrated Truman State University from a sprawling 3,100-page Drupal install to a lean 1,140-page WordPress build. Fewer pages, sharper paths, measurable lift.

19%

More application starts

First admit cycle after launch, measured in Slate.

34%

More organic impressions

Six months on, against the old Drupal baseline.

63%

Fewer URLs to maintain

From 3,100 pages down to 1,140, with no loss of reach.

> We cut two-thirds of the site and applications went up. Fewer pages, done right, beat more pages every time. That is the whole philosophy.

***Eric Yerke** · Founder · Agency OS*

04Pricing

## Priced to *pay for itself.*

Fixed scope, priced upfront. No surprise invoices.

   Focused build Full product

### AI agent add-on

The same team wires an agent into the product: support, intake, or document processing.

  from $25K

### Focused build

- Two-week paid discovery up front
- Working prototype by day fourteen
- App Store submission or production deploy
- 30 days of post-launch support, included

  $40K*/project* [Get the number](/contact/)

### AI agent add-on

The same team wires an agent into the product: support, intake, or document processing.

  from $25K

### Full product

- Everything in Focused build
- Multi-platform: iOS, Android, and web
- Design system and brand foundations
- AI features built in where they earn their keep

  $120K*/project* [Get the number](/contact/)

02FAQ

## No fine print, *just answers.*

   What does an app cost?

Most projects land between $40K and $120K, scoped by impact rather than hours. You will have a number and a timeline before you commit to anything.

 Who owns the code?

You do. One hundred percent: source code, design files, infrastructure, documentation. Open repos from day one, full transfer at launch.

 How long does an MVP take?

Twelve to fourteen weeks is typical, with a working prototype in your hands by day fourteen. We have never missed a committed deadline.

 What happens after launch?

Thirty days of post-launch support are included: production monitoring, fixes, and your team trained to own the system. Built to run without us.

 Why not hire in-house instead?

For the cost of a single senior hire’s salary, you get an entire senior team that has shipped together for years, and no payroll to carry when the build is done.

        [01 Ready now

### Start your build.

Tell us about your product. We respond within 24 hours with a tailored proposal: scope, timeline, and the number.

 *Start a conversation*](/contact/) [02 Still exploring

### Meet the agents.

The same team builds AI agents that absorb support queues and paperwork. See what your next hire could look like.

 *AI Agents & Automation*](/ai-agents/)