Product design · Web app · 2026
Hesabu
A cash-book and credit tracker for market traders. 46 screens, offline first, readable on a five-year-old phone.
Independent studio of one · Kigali, Rwanda
I'm Keza Murenzi. I design identities, apps and design systems for East African companies that want to look as good as they work, and I hand over files your team can actually build from.
Next opening
November 2026 Reserve a slotat a time, never more. Next start date: 3 November 2026.
Kigali time. Calls 08:00–17:00, overlapping Nairobi, Dubai and London.
for a typical identity or product sprint, with a review every Friday.
fixed fee, agreed before we start. Half up front, half on hand-over.
Selected work · 2024–2026
Product design · Web app · 2026
A cash-book and credit tracker for market traders. 46 screens, offline first, readable on a five-year-old phone.
Brand identity · 2025
Mark, wordmark, kiln-stamp and a 36-page guide for a studio pottery.
Product design · Mobile app · 2025
Ordering and tracking for a Nairobi water-delivery service. Built around one big button.
Brand & packaging · 2024
A packaging system for a small-batch roaster: one hill line, one grid, a colourway for each washing station.
Services & fees · USD
Every project is a fixed fee with a written scope. You pay for outcomes, not hours, and you own every file at the end.
A name check, a mark that works at 16 pixels and on a shopfront, and the rules to keep it consistent.
From a rough idea to a tested, clickable app or web product your developers can start on Monday.
Tokens, components and documentation, so the product stays coherent after I leave.
Two days a week on your team for launches, campaigns and everything in between.
Payment by bank transfer or card. Invoices in USD, RWF or KES. Non-profits and first-time founders: ask about the reduced rate.
Marks, wordmarks and the systems around them.
Responsive sites that load fast on slow networks.
Research, flows and interfaces for apps.
Components and tokens that scale with a team.
Motion and micro-detail that make it feel finished.
Labels, boxes and print that survive a market stall.
How a project runs
Five steps, one calendar. You always know what happens this week and what you will see on Friday.
A workshop at your place or on a call. Goals, users, competitors, constraints.
You get: a one-page brief
Positioning, flows and the few decisions everything else depends on.
You get: a direction to sign off
Concepts, then one route refined in detail. Two rounds of changes included.
You get: designs & prototype
I sit with your developers or printer until the real thing matches the design.
You get: specs & QA notes
Launch, hand-over, and a check-in call 30 days later. Files are yours.
You get: every source file


About
I spent four years in agency studios in Nairobi and Kigali before going independent. Now I take on fewer projects and finish every one of them myself.
Most of my clients are founders and small teams across East Africa: a pottery, a roaster, a fintech, a water company. They need design that works on a cracked phone screen in bright sun and on a printed sign in the rain, so that is what I test for.