Integer multiplication is fundamental in cryptography and computational theory, but existing tools don't focus on sub-n log n algorithms.
A web-based or desktop app could let researchers input numbers, select algorithms, and benchmark performance with visualization of intermediate steps.
Universities and crypto firms would pay for this as it accelerates algorithm research and optimization work.
MVP could be a simple Python script with Jupyter notebook integration for visualization.
The main risk is niche audience size—most developers just use standard libraries.