The Story Behind PropelMapper

PropelMapper's first customer didn't use it for field reports. Ahrhoff, an animal nutrition advisory company with a team in South Africa, used an early version of the platform to map their sales territories — and in the process, discovered a gap in regional coverage that led them to hire. A simple mapping tool had driven a real business decision. That was the moment co-founders Reghardt Pretorius and Mark Donne knew agriculture was the right space.

Pretorius had built the original platform — a tool for drawing polygons on satellite imagery, not designed for any specific industry. When Donne joined as co-founder, the two started talking to potential customers and kept hearing the same signal from agriculture. After the Ahrhoff experience validated that signal, Donne began exploring what AI could do in the space. Then Pretorius spoke with his uncle, Dr. Osterhoff, an agricultural advisor in Germany, and the pieces fell into place.

What Pretorius observed wasn't a broken process. It was the opposite. Dr. Osterhoff kept meticulous brown folders for every client — detailed notes from every visit, nothing left to chance. The care and diligence behind his documentation was remarkable. And it worked. When he taught that same process to his sales team, the advisors who adopted it — the ones who took detailed notes and invested in understanding their customers — consistently produced better sales results. The connection was clear: the advisors who documented with discipline built stronger relationships and won more business.

But that level of diligence was hard to maintain. Most advisors couldn't keep it up manually, not because they didn't care, but because the process demanded too much time. The insight was simple: if you could make that discipline effortless — available to every advisor on every team, not only the most meticulous few — the results would follow.

The longer the gap between seeing and writing, the more critical detail disappears. By turning a two-minute voice note into a full report immediately, we preserve the texture and insight of the visit. The reports read like an eye witness account, instead of a rushed memory hours later. — Reghardt Pretorius, CTO & Co-Founder

That was the aha moment. Donne had been pushing toward AI. Pretorius had found the exact problem worth solving. Together, they rebuilt PropelMapper around a single idea: make the diligence that wins relationships available to everyone, without the burden it currently requires.

The Problem Hiding in Plain Sight

What Pretorius saw in his uncle's practice played out across the industry. In every agricultural specialty — crop consulting, livestock nutrition, trial programs, quality control — advisors were spending 4+ hours every week on documentation. Not because they lacked discipline. Because the tools they had weren't built for fieldwork.

Voice memos while walking a field. Filling out forms on the tailgate between visits. Photos on one device, notes on another. They'd try to connect it all that evening, keying data into spreadsheets, assembling reports, filing records. But details got lost. Observations from one visit blended into the next. Critical insights were forgotten between the field and the office. And the nuance — the observations that didn't fit a checkbox, the context that makes a recommendation personal — disappeared entirely.

The Platform Built for the Field, Not the Office

PropelMapper is a voice-first platform. Advisors speak naturally while walking crop rows, driving between clients, or standing at the edge of a field, and PropelMapper structures what they say into a complete field report — tagged to the correct farm and location by GPS.

We focused on precision AI designed specifically for agricultural fieldwork, not general tools. Advisors can record while walking or driving, even offline, and the platform captures rich detail and context they would otherwise lose. — Reghardt Pretorius

But the platform doesn't stop at eliminating paperwork. It builds something that didn't exist before: a compounding record of field intelligence that grows more valuable over time. Every observation connects to the one before it. Every visit builds on the last. When an advisor walks into a farm meeting, they're not starting from memory — they're drawing on a full history of everything they've seen, recorded, and structured across every season.

That's the shift PropelMapper is making possible. Not from paper to digital. From isolated observations to institutional knowledge.

Early Proof, Rapid Growth

PropelMapper launched in September 2024. Within months, ten companies had signed on — crop advisories, agricultural consultants, university researchers, and enterprise teams at Dole, Lindsay, and Laeveld Agrochem. The platform now serves customers across the United States, Germany, and South Africa.

The common thread across our customers is simple: they all care about producing high-quality results, and they all care about relationships. Dole cares about producing high-quality produce. Peoples Company focuses on delivering the best possible outcomes for their farm owners. But for all of them, the bottom line isn't the only part of the equation. The relationships they have with their growers and customers matter to them. The bottom line isn't everything. Relationships with growers and customers matter — they're seeking to strengthen trust. — Mark Donne

In 2025, PropelMapper was selected as one of six startups in Africa to receive the Meta Llama Impact Grant, recognizing its work applying AI to real-world problems in agriculture. In 2026, the company closed an investment with Ag Startup Engine, joining a network of founders building impact across the agricultural value chain.

What Comes Next

The team is building toward a single vision: an operating system for advisors. Not another tool to add to the stack, but the central platform where field intelligence is captured, structured, and transformed into three layers of value — field-level insights for the individual visit, market-level patterns for the broader operation, and team-wide institutional knowledge that compounds over time.

Central to that vision is a commitment to data ownership. PropelMapper does not train on customer data. The institutional knowledge that advisors and teams build over years of field experience — the kind of insight that can't be replicated by searching the internet or asking a chatbot — belongs to the people who earned it. When a company captures that knowledge through PropelMapper, it stays with them. It isn't shared with competitors, and it isn't used to train models that benefit someone else. The same platform that helps teams build institutional knowledge also helps them onboard new employees faster, because that accumulated expertise is captured and accessible. But it remains theirs.

Data isn't only numbers. It's relationship factors. It's what someone's kid did at school. It's the context that turns a good advisor into an indispensable one. We think about this space as something that focuses not only on the output — the quality of the product — but the input: the people working on it. The humanity behind it all. — Mark Donne

The best agricultural technology should feel invisible. It should work in the background so advisors can do what they do best: walk the fields, build trust with producers, and show up knowing their clients better than anyone.

Why It Matters

What drives me are the people behind the food we eat. They're the reason we have the comfort and security in our lives that we do — real human beings working behind the scenes, many unnoticed, ensuring the food quality is there, the yields are coming in, and the farmers can feed their families. If we can make their lives slightly easier — saving them time, saving them a missed note or a missed insight, keeping everyone on the team in sync — then I know the impact we'll have in agriculture will be meaningful. We'll help people spot disease pressures before they spread. We'll help agronomists know what's going on across their team without having to think about it. These people have a challenging job, they have to know so much, and they deserve tools that make it a little bit easier. — Mark Donne