XcelBuilds

Excel apps for small business · built once, sold to many

Spreadsheet tools built for your problem, priced like they weren't.

Every app here started as one business's request. It gets built once, then licensed to every other business with the same problem — which is the only reason the price can stay low. No subscriptions, no bespoke invoices, no waiting on a developer's calendar.

How it works

One build, licensed more than once

The loop that keeps prices down: a request gets voted up, it's built once as a real reusable app, buyers try it free, then pay to keep it — and the listing stays open for the next business with the same problem.

01

Request

Post the problem you want solved — a specific one, from your own business.

02

Vote

Other businesses with the same problem vote it up. Votes decide what gets built next.

03

Try

Once it's built, download it and use the real thing before paying anything.

04

License

Pay to keep it — one license per business. The listing stays open for the next buyer.

Two apps, already live

Metered invoicing & short-stay invoicing

One for landlords billing tenants by meter reading, progressive tariff bands and all. One for camping grounds, RV parks, mooring operators and short-term rentals, generating an invoice the moment a guest checks out.

Catalog

Built apps

Every finished app, ready to try free and license when you're ready. New listings come from the request board.

Live

Metered Utility Invoicing Application

Tenant & meter tracking, progressive tariff bands, monthly readings, one-click invoice generation, paid/pending status per tenant.

$39 · free 7-day trial
Live

Short-Stay Invoicing Template

Camping, RV, mooring & short-term rentals — log a stay, pick the unit and extras, get a finished invoice the moment the guest checks out.

€10
Next app: open The most-voted request on the board gets built next.

Live · first app on the marketplace

Metered Utility Invoicing Application

Built for landlords and property managers billing tenants by water or utility meter. Add tenants once, log a monthly reading, and it works out each invoice on a progressive tariff — no re-typing formulas, no per-tenant setup.

Excel · macros enabled Windows Mac

What it does

  • Add a tenant once in the Users sheet — readings, invoices, and the register pick it up automatically. No formulas to edit.
  • Progressive tariff bands by property category, applied automatically from each month's meter reading.
  • One invoice generated at a time, or all of them at once as PDFs into a folder.
  • Paid / pending tracked per tenant, per month, without a separate spreadsheet.
  • Comes with sample tenant data so you can see it working before you touch a single formula.

Live · newest app on the marketplace

Short-Stay Invoicing Template

For campgrounds, RV parks, mooring/marina operators, and short-term apartment or room rentals — anyone billing guests per stay instead of per month. Log each stay, pick the unit and any extras, and get a finished invoice the moment the guest checks out.

Excel · no macros needed Excel Online Google Sheets

What it does

  • Set up your unit types once — camping pitch, RV spot, mooring berth, apartment, or one row per individually priced unit — each with its own nightly rate and guest allowance.
  • Up to 10 named extras (electricity, cleaning fee, pet fee, deposit, whatever you charge for), each billed per night or per stay, taxable or not.
  • Log a stay in a few clicks — pick the unit type, enter the dates, tick off any extras used — and the invoice builds itself the moment you pull it up.
  • Invoice log fills itself in: pick the Stay ID from a dropdown and the invoice number, guest, unit, total and deposit populate on their own.
  • No macros, no VBA — works in Excel on Windows and Mac, Excel Online, and Google Sheets. Comes preloaded with realistic demo data.

Request board

What should get built next

Post the problem you want solved. Other businesses vote on what's worth building — the app that gets made stays reusable for everyone who needs the same thing.

    Nothing posted yet

    Be the first — post the spreadsheet problem you'd pay to have solved.

    About

    Hi, I'm Jan

    XcelBuilds is one person, not a company — which is exactly why the "build once, license to many" model exists in the first place.

    Jan, on the job

    Account

    Your trials & purchases

    Every purchase runs through Gumroad, so that's also where your downloads, receipts, and license keys live — nothing separate to sign into here.

    Admin

    Manage requests

    Only visible to you as the page owner — everyone else sees the request board read-only. Status changes here update the public board instantly.

    No requests posted yet.