Ten years in nonprofits,
before any of this.
The fastest way to explain Lund Studio is to explain what I was doing before I started it. I was an executive in the affordable-housing nonprofit sector for approximately a decade across multiple states. The app I built first — SideRep — is the app I wished the people I was serving had had. Everything that follows follows from that.
What I actually did for ten years.
I ran operations, strategy, and program delivery at nonprofits whose job was to put people into stable housing — families with children, seniors on fixed incomes, veterans returning from deployment, people coming out of shelters. The work is less glamorous than the mission statement. Most of it is math and logistics and showing up to meetings where the outcome matters more than the attendance.
The thing I learned in that decade — the thing that matters for what I'm building now — is that the people closest to the problem are closest to the solution. Not the donors. Not the board. Not the policy shops in D.C. The single mother holding the housing voucher knows things about the housing system that no one with a master's degree in public policy will ever know. If your organization is not built to hear her, your organization will get the answer wrong every time.
That lesson is the foundation of how Lund Studio operates. It's why SideRep is a peer-matching app and not a coaching app. It's why the Operator Model pushes decision authority to the territory, not to headquarters. It's why the Grove is a grove and not a tower.
If you're evaluating SideRep, this is the part that matters.
SideRep is an athletic partner-matching app. It is a consumer iOS product in a crowded category. The reasonable question any investor or partner asks is: why is this founder the right person to build it?
The answer is not that I'm a better engineer than someone from Google. I'm not. The answer is that I spent ten years running community-facing operations at nonprofits whose job was to match people with resources, keep them engaged over time, and measure outcomes in terms of human life rather than unit economics. The infrastructure SideRep needs — trust-weighted matching, sustained engagement, community accountability — is infrastructure I have already built and run in the real world, at scale, for people whose situations did not tolerate a bad match.
The athletic use-case is the wrapper. The underlying system is nonprofit program design, built in software.
The best idea I had in a decade of nonprofit work was the one my clients kept telling me. I wrote it down eventually. SideRep is the software version.
— Carter Luense · The Origin Line
Why I left.
I left for the same reason a lot of nonprofit executives eventually leave: the ceiling in that sector is not about ambition, it's about infrastructure. You can run the best program in the country and still be limited by how much money the board will raise that year, and the board will raise exactly as much as it raised last year plus a polite increment. You cannot scale a solution faster than the fundraising calendar allows.
When you watch that for long enough, you start to ask a different question: what if the solution itself became the revenue? Not a grant, not a donation, not a line item in a budget meeting — an actual product that delivered value to a person and the person paid for it. That's a different problem entirely, and it's the problem Lund Studio is built to solve.
I did not leave to get rich. I left because a product you sell can serve more people than a grant you apply for. The math is not close.
A venture studio built on proportion.
Lund Studio LLC is a venture studio and IP house. The name comes from the Old Norse lundr — sacred grove. The Luense family descends from the Grafschaft Bentheim region of Lower Saxony, documented in Catholic parish records dating to 1152. The word and the bloodline are the same word.
Every studio project follows the Divinity Rule — a design methodology I've been building for ~34 years, anchored on φ = 1.618. Fibonacci-only spacing. Serif for meaning, sans for substance, mono for precision. Void, gold, grove, ember, bone — five colors, used on purpose.
The things I do that aren't work.
I run every day. Have for twenty-four years without exception — in rain, in snow, in jet lag, in grief. The discipline that built Lund Studio was forged on trails and roads, not in meetings. In June of 2026 I'll race IRONMAN 70.3 Boulder. I lead the Let's Go Run Club at Standley Lake in Westminster on Saturdays at 7 AM. Everyone welcome.
I'm raising a daughter named Maren with my partner Sarah. The Luense Family Perpetual Equity Trust is structured around her — the work I do now is not ultimately for me. Lundr is a sacred grove because a grove is something you plant for the people who come after. That's the whole thing.
If you got this far, you understand what Lund Studio is building and why I'm the one building it. The short version: ten years of nonprofit program delivery taught me the one thing founders usually have to learn the hard way — that the best software is built by people who have already tried to solve the problem without software, and failed the way only real operators fail.
SideRep is the first product. It is not the last. Lund Studio is the structure that will produce the rest. If any of it resonates — as an investor, a partner, an operator candidate, or a person trying to figure out your own next move — the door is open.