Middle TN local businesses — waitlist now open
Build the app your business needs in one day — even if you're completely tech-challenged.
Limited to 15 builders. One curated room. No replay.
What this is
One day. You're at the keyboard building your own app — guided from the first idea to the moment it goes live. No watching from the back row.
Capped at 15 Spring Hill business owners — B2B and consumer-facing alike. Small enough that you're never stuck, and you leave knowing the room.
You don't build a demo. You build the tool your business actually needs — with your services, your prices, your questions baked in.
The setup
You're the kind of owner who notices the gaps. The lead that never got followed up. The quote you meant to send. The same five questions you answer every single day. You've thought, more than once, "there should be a simple tool for this."
And every time, you hit the same wall: building it means hiring a developer, writing a spec you're not sure how to write, and spending a budget that's earmarked for things that already work. So the idea goes back in the drawer.
Here's the part worth saying plainly: the wall moved. The tools an owner can now build in an afternoon used to take a team a month. The only thing missing is a day to sit down and do it — with someone beside you the whole way.
The shift
Not a slide deck about what's possible. Not homework to finish later. You sit down in the morning with an idea for your business, and you leave that evening with a working app that's actually running — built by you, owned by you, ready to put in front of customers.
Is this you?
Good. This day was built for exactly that person — the owner who runs a real business and has never written a line of code, and doesn't want to start now.
You won't be left staring at a blank screen. Guidance is there the entire day. The moment you get stuck, someone is right there to get you moving again. Nobody walks out half-finished.
What you'll build
You won't be handed a fixed menu. Pick the kind of problem you want gone, and you'll build the tool that solves it — shaped around the way your business really works.
Visitors show up, look around, and leave — and you never knew they were there. Build a tool that turns anonymous traffic into named, qualified leads, capturing their info while giving them something genuinely useful.
People want a price before they'll call, and "contact us for a quote" quietly sends them to your competitor. Build something that gives a ballpark on the spot — so the ready-to-buy ones raise their hand instead of bouncing.
You answer the same handful of questions all day, and the ones that land at 9 PM go cold. Build an AI assistant trained on your business that handles them for you — in your voice, around the clock.
You do great work, but your reviews don't show it and prospects can't find them. Build a page that puts your best reviews front and center and makes leaving the next one effortless.
Slow days and casual browsers who never come back. Build an interactive offer — a spin-to-win, a flash deal, a coupon unlock — that turns a visitor into an email address and a first order.
Endless phone tag to book a job or collect what you need from a new client. Build a smart scheduling or intake tool that gathers it all up front — no back-and-forth.
Feeling ambitious? Pitch a wildcard build and we'll help you scope it to ship in a day.
Imagine what's possible
These are real tools built for local businesses across very different industries — quizzes, estimators, calculators, self-checks, dashboards. Yours gets built the same way, for the way your business actually works.
Match 3 for a jackpot — or pull a few ideas, then open a live demo.
Open any of them and use it exactly like a customer would.
Where this came from
I've been building custom systems and apps for decades — more than 150 of them to date. For most of that time, bringing an idea to life meant hiring developers, writing specs, and waiting weeks to see it work.
Then AI changed the math. Today I can take an idea and ship a working tool in a fraction of the time — sometimes in under an hour — without writing the code myself. The first time it really clicked, the thought was immediate: if I can do this with AI without knowing how to code, every business owner around me can too.
That's the whole reason Level-Up Day exists. One of my missions is to make Spring Hill a true Business Innovation Hub — not by talking about technology, but by putting it directly in the hands of the owners who run this town. This is me handing it to you, for a day, in person.
“If I can build this with AI without writing a line of code, so can you. That's the whole idea.” — Rengie Mendoza
Does it actually work?
For decades I've built custom apps that solve one specific, real problem at a time — over 150 to date, for every kind of local business. Not demos. Tools owners use every day. A few of them:
In-home music studio
Booking and lessons handled without the back-and-forth.
Events company
Complex packages priced in seconds, not spreadsheets.
Limo company
Instant ride quotes the moment a customer asks.
Chamber of commerce
Members see the value of membership in real numbers.
See the pattern? A scheduler, a price calculator, an instant estimator, an ROI tool — these are the same building blocks you'll work from at Level-Up Day. The approach is proven 150 times over. The only new part is that this time, you build yours — with me right beside you.
What you walk away with
You won't walk out an engineer — and you don't need to. You'll walk out having taken something from a rough idea to a live, working tool with your own hands. That single skill — knowing you can actually ship it — is what makes the next build faster, and the one after that.
Live and running on your accounts — not a prototype, not a maybe. Yours to keep, use, and change.
Once you've shipped one, the next idea stops feeling impossible. You'll know how the pieces fit.
Nineteen other Spring Hill business owners who get it — relationships that outlast the day itself.
Who you become
That's the real shift. Not a one-time app, but a new answer to "there should be a tool for this" — because now there's a person who can build it. You.
The day
Coffee to ship-it. Here's the shape of the day — breakfast & lunch included, no death-by-lecture.
Settle in, meet the room, fuel up.
↓ Keep scrolling to move through the day — or drag the slider
The full day, at a glance
Why now
For years, building your own tools meant a developer and a budget. That's no longer true — and the owners who notice first are the ones who pull ahead. The only question is whether you build yours with a guide in the room, or keep meaning to figure it out alone.
The tools an owner can build in a day now do what used to take a team a month. That window is open — early movers win.
15 seats, one curated cohort. Kept small on purpose so everyone actually finishes — no overflow, no livestream, no replay.
The next date goes to the waitlist first. With a room this small, that's realistically the only way in.
Why it's worth it
Hire someone to build just one of these apps and you're easily into the hundreds — often a good deal more — before it's even tailored to your business. So run your own numbers:
You build 2 of them yourself in a single day — and know how to change them without paying anyone again.
Join the waitlistA directional estimate you can adjust — not a guarantee. And you walk away with the skill to build the next one, plus a full day of guidance and meals.
Why listen to me
Spring Hill Chamber 2025 Man of the Year & Innovation Partner · Founder, RenzaGroup
Let me be straight with you about one thing: I don't write code. I don't speak "developer," and I never learned to — on purpose. My skill is a different one, and it's the one that matters for you: I know what today's technology actually makes possible, and I design tools and apps around that — always aimed at solving a real business problem, never just building a shiny object that looks impressive and does nothing. The Spring Hill Chamber named me 2025 Man of the Year and Innovation Partner for exactly this.
That's the whole point. I'm not here to turn you into an engineer — I'm here to show you how I've turned 150+ ideas into working tools without writing a single line of code. If I can build it without speaking the language, so can you. Level-Up Day is that proof, put in a room — and I'll be right at your shoulder the whole time.
Join the waitlist
The next date isn't set yet. Put your name down and you'll hear it before anyone else — with first shot at one of the 20 seats.
No payment now · Limited to 20 builders. · Waitlist hears the date first.
FAQ
No — not at all. Level-Up Day is designed for business owners with zero coding experience. You'll be guided every step, and help is in the room the whole day.
A laptop and your charger, plus a Claude Pro subscription (about $17/month) — that's the AI we'll build with. Bring the details of your business too — services, prices, common customer questions — so the app you build is genuinely yours. Meals are provided.
Pricing for the next cohort is announced together with the date, and there's a discounted rate for Chamber members. Whatever it lands at, it covers the full day of hands-on guidance plus breakfast and lunch — and you leave owning what you built. Join the waitlist and you'll hear both before anyone else.
You won't be stuck for long. There's help in the room all day — the whole point of keeping it to 15 builders is that everyone gets real attention. Nobody leaves half-finished.
No. Level-Up Day is open to any Spring Hill business owner. Members get a discounted rate, but membership isn't required to attend.
Next date to be announced, 8:00 AM – 5:00 PM, at the Hilton in Spring Hill, TN.
Limited to 15 builders.
