Custom internal tools & dashboards, built around how your team works.

Running the business on a spreadsheet and duct tape? We build the admin dashboards, ops consoles, and workflow tools your team actually needs — production-grade code, shipped in weeks.

200+ products shipped · US-based team · free, no-pressure scoping call

Alex Dow, founder of Let's Build My App

Sound familiar?

ONE SPREADSHEET RUNS THE BUSINESS

There's a master spreadsheet only one person truly understands. When they're out, half the company's workflows stall with them.

A tool the whole team runs on shouldn't live in one person's head

COPY-PASTE BETWEEN FIVE SYSTEMS

Your team re-keys the same data into the CRM, the billing tool, the spreadsheet, and the email thread. Every hop is another chance for an error.

Manual glue between systems is where data quietly goes wrong

NO PERMISSIONS, NO AUDIT TRAIL

Everyone can edit everything, nobody knows who changed what, and one fat-fingered cell can quietly break a month of numbers.

Roles, permissions, and history are table stakes in a real tool

REPORTING TAKES DAYS

Month-end means exporting, merging, and reconciling by hand. The numbers arrive late, and nobody fully trusts them when they do.

A dashboard should answer in seconds what reports answer in days

OFF-THE-SHELF COVERS 80%

The SaaS tool almost fits — but the missing 20% is your actual process, so the team works around the tool instead of with it.

Your process is what makes your business yours; the tool should match it exactly

PER-SEAT PRICING PUNISHES GROWTH

Every new hire means another seat across five subscriptions. The stack costs more every quarter — and it still doesn't fit.

A tool you own has unlimited seats, forever

Sometimes the answer is: keep the spreadsheet.

We're not here to sell you software you don't need. If a shared spreadsheet still does the job, keep the spreadsheet — it's free and everyone already knows how it works. The time to build is when the tool IS the bottleneck: one fragile file runs the business, your team burns hours re-keying data between systems, or off-the-shelf covers 80% and the missing 20% is your actual process. That's the honest read you get on the scoping call, for free.

What your ops stack actually costs

Status quo: SaaS + spreadsheets One custom tool you own
Software cost Per-seat fees, multiplied across every tool and every hire Fixed build cost, then Firebase or Supabase hosting — typically $25–$100 per month
Adding a team member Another seat on every subscription in the stack Unlimited seats — the tool is yours
Moving data around Copy-paste, CSV exports, and manual glue on someone's calendar Integrations move data between systems automatically
Fit to your process The 80% the vendor built for everyone, with feature gates for the rest Built around your exact workflow — the missing 20% is the spec

Ranges reflect typical internal tools; the free scoping call includes numbers for your actual team and systems.

How we build it

FREE SCOPING CALL

We walk through how your team actually works today — the spreadsheet, the copy-paste, the workarounds — and map exactly what the tool needs to do. Straight advice included: if you don't need a custom build, we say so.

If the spreadsheet still works, we'll tell you to keep it

FIXED QUOTE

You get a fixed price and a timeline before anything is built. No hourly meters, no scope surprises — the number we quote is the number you pay.

One number, agreed up front

DESIGN + BUILD

Senior US-based developers build your tool in production-grade React + TypeScript on Supabase or Firebase, wired into the systems you already use.

Your process, turned into software

REVIEW ON A LIVE STAGING APP

You click through the real tool on a staging URL as it comes together — not mockups, not screenshots. Feedback lands while it's still cheap to act on.

You see the real thing every week, not a demo at the end

LAUNCH + SUPPORT

We roll it out to your team, hand you the GitHub repo, and stay on for post-launch support. You own every line from day one.

Your tool, your code, your infrastructure

What you get

A CODEBASE YOU OWN

A GitHub repo in your name — standard React + TypeScript any developer can pick up. Unlimited seats, no per-user fees, no vendor lock-in, ever.

React + TypeScript / Supabase or Firebase / Your repo, your infrastructure

A TOOL THAT FITS YOUR PROCESS

Not the 80% a vendor built for everyone — the 100% your team actually runs on, including the messy parts that make your business yours.

The missing 20% is the spec, not a workaround

A FIXED PRICE FROM A US TEAM

Senior US-based engineers, one fixed quote, shipped in weeks. Hosting typically runs $25–$100 per month — with no seat math, ever.

Know the full cost before you commit

A team of senior US engineers

Let's Build My App is a team of senior, US-based engineers who have worked together for years. No offshoring, no freelancer marketplaces, no juniors learning on your project. The same people who design your platform build it, review it, and ship it, so nothing falls through the cracks between teams who have never met.

200+

custom products shipped, and counting

100%

US-based senior engineers

35+ yrs

of combined software development experience

0

handoffs between teams who've never met

Got a question?

We have answers.

How much does a custom internal tool cost?

It depends on the scope — most internal tools and dashboards land in the range of a 4–10 week build. The free scoping call gives you a fixed quote, so you know the full price before any work starts.

How long does the build take?

Most internal tools ship in 4–10 weeks. Admin dashboards, ops consoles, and workflow tools follow patterns we build every week, so we move fast without cutting corners — and you review progress on a live staging app the whole way.

Can it connect to the systems we already use?

Yes — integrations are usually the whole point. We connect your tool to your CRM, billing, spreadsheets, and internal databases so data entered once shows up everywhere it needs to, with no more copy-paste between systems.

What about permissions and audit trails?

Built in from day one. Role-based access controls who can see and edit what, and an audit history records who changed what and when — the two things spreadsheets and shared logins can never give you.

Will you tell us if we don't actually need a custom tool?

Yes — and we sometimes do. If a spreadsheet still works or an off-the-shelf product genuinely fits your process, the scoping call will say exactly that, for free. We build when the tool is the bottleneck, not before.

Find out what your internal tool
would cost to build.

A free scoping call with Alex: a straight build-or-don't verdict, a fixed quote if it's time, and zero pressure either way.

Alex Dow, founder of Let's Build My App