Writing

Essays on African economies, mobile money, crypto rails and the craft of building financial software.

Mobile Money

The float is the product

I spent four years building on Kenya's mobile-money rails before I understood what I was actually building on: not a payments company, but something much closer to a narrow bank.

12 Sep 2026
11 min
Mobile Money

A nicer front end on someone else's monetary policy

I asked everyone I met in Nairobi whether they used a crypto neobank. I could not find one person.

7 Aug 2026
3 min
Mthunzi
mthunzi.xyz
Colophon. Set in Fraunces and Source Serif 4, with Inter for labels. Charts drawn by hand in SVG. Written and built by Mthunzi Sabali.