Every small business has a little tool it wishes it had. A quick quote calculator so you stop doing the math in your head. A simple tracker for who’s booked which slot. A checklist that actually enforces the steps. The kind of thing that’s too specific for off-the-shelf software and too fiddly to justify hiring a developer — so you make do with a spreadsheet held together with hope.
Mini apps change that math. The tool you wished for is now a sentence away.
What a mini app is
A mini app is a small, single-purpose tool you create by describing what you want in plain English. No code, no developer, no app store. You say what it should do; the AI builds it. A few minutes later you have a working thing you can use and share with your team.
Think narrow and useful, not big and ambitious:
- A quote calculator for your specific pricing.
- A tracker for jobs, bookings, or inventory.
- An intake form that asks new customers exactly the right questions.
- A checklist that walks you (or a new hire) through a process the same way every time.
How the build flow works
You describe the tool the way you’d explain it to a capable assistant: "I need a calculator where I pick a service and a size, and it gives me a price and a deposit amount." Miles builds it, shows it to you, and you refine in conversation — "add a rush option," "round to the nearest five." It’s iterative and fast, and you never touch a formula.
The shift that matters
You stop bending your business to fit generic software, and you stop wrestling spreadsheets into doing things they were never meant to do. The tool fits the job because you described the job.
Good first use cases
The best first mini app is something you do often, by hand, the same way each time. That’s where the payoff is immediate. Repetitive calculations, simple tracking, structured intake, step-by-step procedures — all great. You’ll know you picked well if the app erases a small, recurring annoyance you’d stopped even noticing.
When a spreadsheet is still fine
Mini apps aren’t always the answer, and it’s worth being honest about that. If something is a one-time calculation, or genuinely just a list you glance at, a spreadsheet or a note is fine. The case for a mini app gets strong when:
- More than one person uses it and consistency matters.
- It involves logic (if this, then that) that’s easy to get wrong by hand.
- You do it often enough that small errors or friction add up.
The real win is fewer fragile spreadsheets
The spreadsheet that breaks when someone types in the wrong cell, the one only you understand, the one with a formula error nobody’s caught — those are exactly what a purpose-built mini app replaces. Same job, far less fragility.
Describe it, don’t build it
The barrier to having the right tool used to be technical skill or budget. Now it’s just being able to describe what you want. If you can explain the tool to a coworker, you can have it. Start with one small, repetitive annoyance, describe the fix in plain English, and let your sidekick build it — then wonder why you tolerated the spreadsheet for so long.