Custom software for businesses

Own the system your business runs on.

We have used Allen App Tools to completely streamline and automate our company!

Devin · Product Sales

Quoting, scheduling, job tracking, invoicing, and the daily paperwork in one app, built around how you already work. You own it, and we keep it running.

Book a free brainstorm See what we build

30 minutes on Google Meet. No pitch, no obligation, and we reply within a few hours.

Dan Allen, founder of Allen App Tools

Dan, founder

115businesses we’ve built for
1,005paid jobs delivered
5 daysmedian turnaround on a small build
2020building for small business since

Allen App Tools completely transformed a complex, time-consuming process into a streamlined, one-click solution.

The Indian Trail team · Physical Therapy

We genuinely view Allen App Tools as an extension of our team — our integrations department.

Eric · Delivery Services

Read 60 more client reviews →

The short version

Small businesses used to own their software. Then renting took over.

For twenty years the deal has been the same: a subscription for every job, and none of it fits quite right. AI just changed the economics of building custom, which means the old option is affordable again: one system shaped to your business, at a small fraction of what it once cost. We wrote the whole 75-year story here.

What we build

One system instead of countless SaaS subscriptions.

Every build starts from the job you need done, never from a template. Your system bends to fit the way you already work, connects to the tools you want to keep, and fills the gaps between them so the whole operation finally holds together.

The flagship

Complete business systems

Intake to invoice in one app: customers, jobs, crews, forms, follow-ups, and the reporting that tells you which work makes money. Built for trades, clinics, and service companies that outgrew the spreadsheet.

See how it works →

built this one for a plumbing crew
MILLER PLUMBING · OPS
Water heater, 41st Ave · crew BScheduled
Quote #214, Hendricks · sent TueFollow up
Invoice #1187 · $1,450Paid

The wedge

Google Workspace automation

Start where your data already lives. Sheets, Gmail, Drive, and Calendar wired together so the busywork does itself.

See how it works →

Connections

Integrations

Your tools talking to each other: QuickBooks, Stripe, calendars, phone systems, whatever you already run.

See how it works →

Visibility

Dashboards and reporting

The numbers you actually run the business by, current and in one screen instead of five exports.

See how it works →

Front doors

Web and mobile apps

Customer portals, field apps for the crew, booking pages. Tools your team and your customers open every day.

See how it works →

How it works

Built in phases, and a straight answer first.

1

A 30-minute brainstorm

You bring how the work flows today, and we talk through the snags together. We’ll tell you honestly whether custom software is worth it for you. Sometimes the answer is “keep the spreadsheet,” and we’ll say so.

2

A plan, priced in phases

You get a plain-language plan of your dream system, split into phases with a price on each one. You approve a phase before we build it, and you see working software early.

3

We build. You own it.

The code, the data, the accounts: yours. No per-seat fees, no rent that outlives the reason you started paying it.

After launch, we stay on call

Upkeep runs on a simple hourly contract: updates, fixes, and a person who answers when something changes in your business. Your system keeps up as you grow.

In their words

What clients say.

We’re equally thrilled with the progress Caden and Antonio have made and the efficiencies and clarity their work has brought to our projects.

Nicolette11 Feb 2025 · Event Services

Things like this is real time information that we’re using. So this is exactly what we need.

Damon20 Feb 2026 · Fence & Deck Construction

We were demonstrating our app at a conference last week and one of the questions I got was about the automation process; they were impressed with how quickly everything worked!

Lee8 Sep 2025 · Product Design

The whole wall of reviews →

The team

The people who build it.

Clients name them in reviews, which is the part we’re proudest of.

SaraSaraDeveloper
SeanSeanDeveloper
SpencerSpencerDeveloper
+

and more

You get the same crew every time.No handoffs to a stranger halfway through, and the person who built it is the person who fixes it.

Dan Allen

The first call

Thirty minutes of brainstorming, on the house.

Bring the spreadsheet, the whiteboard photo, the process that keeps breaking. We’ll talk through your workflows, flush out a few possible fixes, and sketch what a system could look like for your business.

If custom software isn’t the right answer for you, we’ll say so on the call, and you keep every idea we came up with either way.

Grab a time books straight onto my calendar

30 minutes · Google Meet · no pitch, no obligation

Case studies

Real work, for real businesses.

From the automation projects that built this company: real clients, real numbers, written up start to finish. Full business-system write-ups will land here as we ship them.

All case studies →

60 seconds at a time

The reels people watch most.

Business systems, explained in under a minute.

In 1949, payroll arrived by van. The contractor report QuickBooks Online keeps on its top plan This is why we call it the cloud. Why is it called a dashboard?
Subscribe on YouTube More shorts →

From the blog

The latest writing.

All posts →

Products

Tools we built and run ourselves.

GeoUP

Local SEO for service businesses: your crew takes a photo on the job, and your business gets found in local and AI search.

See GeoUP →

RideCue

Cue up rides with your crew: everyone paints their weekly availability, RideCue finds the overlap. Ride plans, photo albums, weather, and Strava built in.

See RideCue →

Buggernauts

Real bugs, real battles: photograph a living bug in the wild and it becomes your battle partner. A creature collector built on real entomology, now in closed beta.

Request a beta invite →

The Operator’s Brief

One useful idea for running your business, once a month. Written by a person, read in three minutes, no pitch parade.