About Gunnar BioTech

Making complex biology easier to explore.

Gunnar BioTech develops interactive scientific software that helps students and researchers move beyond static diagrams and experience biological systems as connected, changing processes.

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Our purpose

Our Mission

Biology is dynamic, interconnected, and constantly changing. Our mission is to create accessible tools that allow users to observe those systems in motion, test ideas, and develop a deeper understanding through interaction.

Move beyond memorization

Traditional diagrams are useful, but they cannot fully show how concentrations, reaction rates, pathway activity, and cellular conditions influence one another over time.

Learn through experimentation

Interactive simulation allows users to change conditions, observe consequences, ask better questions, and connect biochemical theory with visible behavior.

Build useful scientific tools

We aim to combine scientific rigor, thoughtful design, and approachable interfaces so advanced biological concepts are easier to investigate and communicate.

The person behind the company

About the Founder

Nicolas Gustafson

Founder, Gunnar BioTechnology LLC

I am a Philadelphia native now based in Gainesville, Florida. I graduated with a bachelor's degree in biochemistry from Virginia Tech in 2023, which I later followed up with a Master of Science in the Life Sciences with a focus in molecular biology, graduating in 2026. I also served six years in the US Marine Corps Reserves, of which I retired in May of 2026. I have a passion for all things chemistry and am excited to have finally rolled out my first project here at Gunnar BioTechnology. After four years of development and a private beta, Fluxion launched publicly on October 1, 2026, and I am excited to see where it goes next.

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I created Fluxion with the intent to improve the way in which students learn about the fundamental pathways of human metabolism. It feels like yesterday when I was sitting in my first detailed biochemistry class doing my best to memorize the steps of glycolysis. I created Fluxion because I believe learning about metabolism should be done dynamically, not only via memorization.

How we work

Our Core Principles

These principles guide how Gunnar BioTech approaches product design, scientific modeling, education, and future development.

Scientific Accuracy

Models are developed around established biochemical principles and are refined as the software, supporting data, and scientific understanding evolve.

Education First

Every feature should help users understand a biological process, investigate a question, or connect theory with observable behavior.

Interactive Exploration

Users learn more when they can adjust conditions, test hypotheses, inspect results, and follow relationships across a system.

Clarity and Accessibility

Complex scientific information should be presented through thoughtful interfaces, clear visualizations, and approachable explanations.

Transparency

Assumptions, limitations, references, and simulation behavior should be communicated as clearly as possible.

Continuous Improvement

Feedback, testing, new scientific information, and real-world use all contribute to the continued development of the platform.

Built for scientific computing

The Technology Behind Fluxion

Fluxion is developed with modern scientific-computing and visualization tools selected to support numerical simulation, interactive interfaces, data exploration, and continued expansion.

Python PySide6 NumPy SciPy Matplotlib GitHub Azure Cloudflare

Our development story

Company and Product Timeline

Fall 2022

Simulate Metabolism

Sitting in VT BCHM 4115, I had my first idea to create an interactive game-like program that simulated the major pathways of metabolism. I spent four years teaching myself basic software development and molding the idea.

Spring 2026

First Fluxion Prototype

The initial Fluxion prototype was the product of four years of development into a dynamic metabolism simulator. Early development was slow and painstaking, but necessary to create the foundation Fluxion is built on.

Spring 2026

Beta Program

Private beta testing began in the spring of 2026, followed by a rapid succession of new features, model improvements, and bug fixes.

June 2026

Gunnar BioTech Founded

Gunnar BioTechnology was founded on June 17, 2026, with the intention of bringing together a development team that could help take Fluxion to the next level.

Summer 2026

Private Beta Rollout

Fluxion's private beta expanded during the summer of 2026, providing real-world testing for its licensing system, installer, updates, simulations, and learning tools.

October 2026

Public Launch

Fluxion launched publicly on October 1, 2026, making the production Windows release available for purchase and download.

Future milestone

Near Future Goals

Major new additions to Fluxion are in development. A macOS version is underway, with additional metabolic pathways and new tissue types planned to expand the simulator's scope.

Where we are going

Product Roadmap

Current Focus

Deepening the metabolic model

Deepen lipid metabolism with explicit lipogenesis and cataplerotic pathways
Refine bioenergetic, redox, and long-run acid-base calibration
Expand tutorials, guided exercises, and model documentation
Continue improving cross-tissue visualization and experiment analysis

Prepare and validate a macOS release
Develop classroom and institutional licensing options
Add additional tissues such as heart, brain, kidney, and adipose

Long-Term

Multi-scale biological simulation

Replace systemic stand-ins with additional explicit tissue models
Extend blood gas and bicarbonate chemistry
Support research-oriented model customization

Roadmap items represent development goals and may change as the platform, scientific priorities, and user needs evolve.

Scientific foundation

References and Model Transparency

Fluxion is developed using established biochemical literature, documented kinetic relationships, and scientific references wherever possible. Supporting sources, model assumptions, and known limitations are documented alongside the model methodology.

Methods and References

Explore Fluxion's model methodology, parameter sources, and scientific references.

View methods

Help shape the platform

Join the Development Journey

Feedback from learners, educators, scientists, and Fluxion users helps identify opportunities to make Fluxion more useful, accurate, and approachable.

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