Custom Software & App Development · Houston, TX

Custom software for the Web, iPhone, Android, and Windows.

We design and build the software Houston businesses run on: the Web app that finally replaces the spreadsheet, the iOS and Android app your crew uses out in the field, the Windows application on the shipping station, the website that turns a search into a phone call. Designed to look like something you'd show a customer — and you own the result outright.

Who this is for

Different clients, different conversations

The work overlaps, but what you need from us doesn't. Pick the one that sounds like you.

Not registered yet

The business itself doesn't exist on paper. You need the LLC filed, a domain and business email, hosting, and a Google listing — before there's anything to build a site for.

Register the business first →

Veteran founders

You served, and Texas backs that: the formation fee waived and no franchise tax for five years on a 100% veteran-owned new business — if the claim is filed with the formation, which is exactly the paperwork we do.

Veteran-owned businesses →

New & aspiring business owners

You're getting a business off the ground and need it online — a simple site, a storefront, or the application the whole idea depends on.

New business websites →

Small & local businesses

You need one useful tool and a website that works — not an enterprise platform or a full-time developer on payroll.

Small business software →

Startups & founders

You need the smallest honest version of the product in front of real users, built so your first in-house engineer can take it over.

Startup & MVP builds →

Agencies & consultancies

You need quiet overflow capacity under your own brand — backend, integrations, or the legacy work your team would rather not take.

White-label development →
Platforms

Web, iOS, Android, Windows — whichever the job needs

We pick the platform from how the work actually happens, not from what we feel like building. Sometimes that's one app on all four; more often it's a Web app with a phone app for the people who are never at a desk.

Web Apps & Websites

Runs in the browser your team already has open. Nothing to install, nothing to roll out, one place to fix a bug.

  • Responsive layouts that hold up on a phone, a tablet, and a 34-inch monitor
  • Progressive Web apps that install to the home screen and work offline
  • Single sign-on with Microsoft 365 or Google Workspace
  • Customer portals, storefronts, marketing sites, and internal dashboards

iOS Apps — iPhone & iPad

An app that looks like it belongs on the phone, not a website in a box with a title bar.

  • Built to Apple's Human Interface Guidelines, so it feels native to use
  • Flutter for most builds — one codebase, an iPhone app that doesn't feel ported
  • Camera, barcode scanning, GPS, offline storage, and push notifications
  • App Store submission, review responses, and release management handled
  • TestFlight builds so you can try it before anyone else does
  • Private internal distribution when the app is for your staff, not the public
Full iOS & Android app development details →

Android Apps — Phones, Tablets & Handhelds

One app that behaves the same on a warehouse handheld, a driver's phone, and a tablet on a wall mount.

  • Material Design layouts that scale across a fragmented device fleet
  • Rugged handhelds and hardware scanners, not just consumer phones
  • Google Play submission, staged rollout, and managed Play internal distribution
  • Offline-first sync for crews who lose signal in a building or a yard
  • Usually Flutter, so the Android and iOS builds share one codebase
Full mobile app development details →

Windows & macOS Desktop Apps

For the work that lives on a workstation — the plant-floor PC, the shipping station, the back-office machine.

  • Windows desktop applications with a real installer and silent deployment
  • Local hardware: label printers, scales, scanners, and serial devices
  • macOS builds signed and notarized so Gatekeeper doesn't alarm your staff
  • Works against a local database when the network is down, syncs when it returns
  • Windows services and scheduled jobs for the parts nobody should have to click
  • Flutter desktop when the same app should also run on a phone and a workstation

Not sure which one you need?

That's the first ten minutes of the scoping call, and it's free. Native apps earn their cost when the work happens offline, in the background, or through a camera or scanner. When it doesn't, a responsive Web app does the same job for less and skips the app stores entirely — and we'd rather say so than sell you two store listings you have to maintain.

Capabilities

What we build

If it runs on a server, a browser, a phone, a workstation, or a schedule, it's probably in here somewhere. Sometimes it's a whole vertical — see the fire alarm contractor software practice that grew out of exactly this kind of work.

Internal Tools & Web Apps

Replace the spreadsheet the whole company secretly depends on.

  • Quoting, scheduling, work-order & job-tracking tools
  • Role-based logins so the right people see the right things
  • Audit history, so you know who changed what and when
  • Real backups, instead of a file on somebody's desktop

Websites & Landing Pages

Designed to be worth landing on, fast on a phone, and built so a form submission actually reaches a human.

  • Custom design — not a bought template with your logo dropped in the corner
  • Hand-built, fast-loading pages that pass Core Web Vitals on a phone
  • Contact and quote forms with spam handling that works
  • Technical SEO, structured data, and analytics wired in from launch
  • Content you can edit without calling us every time

Interface & Product Design

The screens get designed, not just assembled. Nobody has to apologize for how it looks.

  • Layouts, type, and color drawn from your brand — or a clean one built with you
  • Clickable prototype before we write the expensive part
  • Responsive from a 360px phone to a wide desktop monitor
  • WCAG 2.2 AA contrast, focus states, and keyboard paths as standard
  • A small design system, so screen twelve looks like screen one

APIs & Integrations

Make the software you already pay for talk to the rest of it.

  • REST, webhook, and file-based integrations between SaaS tools
  • Accounting, CRM, payment, and e-commerce connections
  • APIs over your own data so other systems can use it
  • Retries and alerting, so a silent failure does not cost you a week

Automation & Scripting

The recurring manual job nobody should still be doing by hand.

  • Scheduled imports, exports, and file processing
  • Power Automate flows where you already own the licences
  • Report generation and distribution on a timer
  • Bulk data cleanup, migration, and de-duplication
  • Spreadsheet and document generation from live data

E-commerce & Payments

Take money online without handing a slice of every order to a platform you don't control.

  • Stripe, Square, or PayPal checkout built into your own site
  • Shopify builds and customization when a platform is genuinely the right call
  • Subscriptions, invoicing, and payment links that reconcile with your accounting
  • Orders that flow into fulfillment instead of sitting in an inbox
  • Card data goes straight to the processor and never touches your server

Data, Reporting & Dashboards

One number everybody agrees on, updated without anyone assembling it.

  • Power BI models, DAX, and reports — or a custom dashboard if that fits better
  • Database design, cleanup, and query performance work
  • Scheduled reporting to email, Teams, Slack, or a shared drive
  • Historical tracking, so you can see a trend instead of a snapshot

Maintenance & Support

Someone to call when the thing you rely on stops working.

  • Monthly retainers for updates, fixes & small enhancements
  • Security patching and dependency upkeep
  • Hosting, backups, certificates & uptime monitoring
  • Taking over an app whose original developer has vanished
Design & UX

It should look like you paid for it

Business software has a reputation for looking like a 2004 intranet. That's a choice somebody made, not a law of nature. Design is part of every build here — the same attention whether it's a public app store listing or a screen only your dispatchers will ever see.

Prototype before code

You click through the real screens and move things around while changing them is still free. Nobody signs off on a wireframe and hopes.

Your brand, not our template

Type, color, and layout built from your identity — or a clean one built with you if the logo is the only asset you've got.

Right on every screen size

Tested from a 360-pixel phone to a wide desktop monitor, with touch targets sized for a thumb in a work glove.

Accessible by default

WCAG 2.2 AA contrast, visible focus states, keyboard paths, and real labels — which also happens to be what public-sector and enterprise buyers ask for.

A design system, not a pile of screens

Shared components and spacing rules, so screen twelve looks like screen one and the next feature doesn't drift.

Fast counts as design

A beautiful screen that takes six seconds to load is a slow screen. Performance budgets are part of the design, not a cleanup task afterwards.

The part most freelancers won't put in writing

You own the code. On final payment you get the source, the commit history, and the deployment instructions, in your repository and your hosting accounts wherever possible. No hostage hosting, no handover fee, no "we'll need to discuss licensing."

We'd also rather turn down work than take a project we don't think is worth building. Sometimes the answer is an off-the-shelf SaaS subscription instead of a custom app, and telling you that costs us one invoice and earns a referral. Sometimes the system you already have is fine and only needs to move somewhere supported — that's legacy modernization and migration, and it's a fraction of the cost of rebuilding it.

You talk to the builder

No account manager relaying requirements to a team you never meet. The person writing the code is the person on the call.

Working demos, not status reports

You get something clickable at a regular cadence. Progress you can see beats progress you have to take on faith.

Boring plumbing, polished surface

Conventional, durable technology underneath — your next developer will recognize all of it — and a designed, current interface on top. The unfashionable choices belong in the parts nobody sees.

No lock-in by design

Documented, conventional, and handover-ready from day one — whether or not you keep working with us.

How it runs

From first call to something you can use

  1. 1

    Scoping call

    Free, 30 minutes, no deck. We find out what hurts and whether custom software is even the right answer.

  2. 2

    Proposal & design direction

    Scope, price, timeline, target platforms, and what's explicitly out of scope — with a clickable prototype of the main screens before the build starts.

  3. 3

    Build in slices

    Smallest useful piece first, demoed as it goes. You can change direction while it's still cheap to change.

  4. 4

    Launch & handover

    Deployed — or submitted to the App Store and Google Play — documented, walked through with your team, and handed over, with or without an ongoing retainer.

Engagement models

Ways to work with us

Pick the one that matches how well-defined the work is. We'll tell you if you've picked the expensive one for your situation.

Fixed-price project

Quoted up front

Clear scope, clear number, clear finish line. Best when you know what you want. If scope changes mid-flight we re-quote the delta rather than quietly billing more.

Hourly

Time & materials

For open-ended, exploratory, or drip-feed work. Itemized so you can see exactly what each hour bought, and you can stop at any point.

Monthly retainer

Fixed block of hours

A standing block of hours for maintenance, small enhancements, and being reachable. Effectively a part-time developer without the hire.

Second opinion

Short paid review

A few hours to review a quote, a codebase, or a stalled project and tell you straight whether it is sound. No obligation to hire us for the fix.

Stack

What we build with

Deliberately conventional. Most builds land in Python, TypeScript, or C#; we also take work in Go, Rust, Java, C++, Swift, and the less common languages in the grid. If your team already has a stack, we work in yours instead.

Flutter Dart Python Flask FastAPI Django Go Rust JavaScript TypeScript React HTML & CSS Jinja SQL PostgreSQL MySQL SQLite React Native Swift & SwiftUI Kotlin Java Android SDK Progressive Web apps Electron .NET & C# F# C++ WPF WinForms Scala Clojure Erlang & Elixir Julia Zig Figma Design systems WCAG 2.2 AA REST & webhooks Docker Linux Nginx Git CI pipelines AWS Azure Cloudflare Stripe Twilio Microsoft 365 / Graph Power BI Power Apps Power Automate Dataverse DAX Google Workspace APIs QuickBooks Shopify Excel & CSV pipelines pandas Playwright pytest cron & systemd Bash PowerShell
Questions we get

Straight answers

Do you build mobile apps for iPhone and Android?

Yes — iOS, Android, or both, and we handle App Store and Google Play submission rather than handing you a build file and wishing you luck. Most of our mobile work is Flutter: one codebase ships to both stores, which cuts the build roughly in half against writing the same app twice and keeps the two versions from drifting apart afterwards. We go fully native in Swift or Kotlin when an app leans hard on platform-specific behavior.

Do we actually need a native app, or would a website do?

Often a mobile Web app is the right answer, and it is cheaper, and we will tell you so. You need a real installed app when it has to work with no signal, run in the background, use the camera or scanner heavily, send push notifications, or live on the home screen because people open it twenty times a day. If none of those apply, a responsive Web app saves you the app stores entirely.

Can you build a Windows desktop application?

Yes, including the parts most Web shops skip: a signed installer, silent deployment to managed machines, local printers, scales and scanners, and running against a local database when the network drops. macOS builds get signed and notarized so staff are not clicking through security warnings. Where a browser would genuinely do the job, we will say that first.

Who designs it? We do not want something that looks homemade.

Design is part of the build, not an upsell. You get a clickable prototype before we write the expensive part, layouts drawn from your brand, and a small design system so the twelfth screen looks like the first. Everything is responsive down to a 360-pixel phone and meets WCAG 2.2 AA contrast and keyboard requirements. If you already have a designer or a brand guide, we build to it.

Who owns the code?

You do, outright, on final payment — source, history, and deployment instructions, in your own repository and accounts wherever possible. We do not hold your project hostage in our hosting account, and we do not charge to hand it over.

What does a project cost?

A small integration or automation is usually a few days of work. An internal tool with logins and reporting is typically a few weeks. A first mobile app release — designed, built, and through App Store or Play review — is normally measured in weeks rather than months, because we ship the smallest useful version first. We quote after a free scoping conversation, and we will tell you when the honest answer is that the software is not worth building.

We already have a developer. Is that a problem?

No, and it is common. We take the piece your team is short on — an integration, a migration, a legacy component — work in your repo and your conventions, and leave without a trace of vendor lock-in.

What programming languages do you work in?

The problem picks the language more than we do. Python and TypeScript carry most of the web work; Go or Rust where a service has to be small and fast; Java, C#, and C++ where your existing systems already run on them; Swift when a mobile app goes fully native; JavaScript and SQL under nearly everything. We also take the work most shops turn down — COBOL, Fortran, Ada & SPARK, Erlang and Elixir, Scala, Clojure, F#, Julia, and Zig — usually on one side or the other of a modernization. If your team already has a stack, we work in yours instead.

How do we work together day to day?

A short kickoff, then a working demo you can click through at a regular cadence rather than a status report you have to interpret. You talk directly to the person writing the code, because that is who there is.

Will you sign an NDA?

Yes, routinely, before you share anything sensitive. Send yours over, or we can provide a simple mutual one.

What happens after launch?

Your choice. Take it in-house with documentation and a handoff walkthrough, or keep us on a small retainer for updates and support. Both are normal; neither is a trap.

Get in touch

Describe the annoying thing.

You don't need a spec or a budget yet. Tell us what's slow and we'll tell you what it would take.

Prefer to talk?

Call 832-598-8234 or email msco@stoneagesoftware.com. Houston, Texas — serving Houston, The Woodlands, Conroe, Sugar Land, Katy, Pearland, and the Greater Houston metro.

What happens next

We read your message, an engineer replies with questions or a straight answer, and if it's worth a call we book one. No drip campaign, no handoff to sales.

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