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Software that works
where the network
doesn’t.

Trenax is a Nairobi engineering studio. We build websites, apps and business systems for mobile money, mid-range Android and networks that drop.

products shipped
50products shipped
countries running them
4countries running them
industries
12industries
clients who come back
98%clients who come back

Trusted by teams across Kenya and East Africa

  • Sokoni Trading
  • Rapid Logistics EA
  • Afya Health Group
  • Acacia Real Estate
  • Shule EdTech
  • Savanna Collection
  • Tumaini Foundation
  • PesaFlow
  • Mashamba Co-op

Sample client names shown — replace with permitted client marks before launch.

What we build

Every engagement starts from the commercial outcome and works back to the system that delivers it.

Most clients arrive with a business problem rather than a service. Describe what is not working and we will tell you what it takes to fix.

Products shipped
50+Products shippedWeb, mobile, software and IoT builds since 2021.
Industries served
12Industries servedFrom clinics and schools to logistics and fintech.
Countries
4CountriesKenya, Uganda, Tanzania and Rwanda deployments.
Client retention
98%Client retentionMost clients return for a second engagement.
A hand holding a feature phone and Kenyan shillings

Built here, for how business actually works here

Overseas studios build for a market they have never visited. Freelancers disappear after the third invoice. We work in the space between.

Tested on
2GB Android
Network floor
3G, intermittent
Payments
M-Pesa first
Handover
Full ownership
  • Built for African market realities

    M-Pesa first, offline-tolerant, and tested on the mid-range Android phones and intermittent networks your customers actually use - not just on office fibre.

  • Design-first engineering

    Interface design and architecture happen in the same room. You get a product that looks premium and holds up under load, not a pretty shell over fragile code.

  • Enterprise architecture, startup pace

    Typed codebases, CI pipelines, monitoring and documented handover from day one - shipped in weeks, not quarters.

  • We stay after launch

    Every build ships with a support window, uptime monitoring and a named engineer who already knows your system.

  • You own everything

    Source code, cloud accounts, domains and design files are transferred to you at handover. No hostage licensing, no lock-in.

  • Transparent commercials

    Published price ranges, fixed-scope quotes and weekly demos. You always know what is being built and what it costs.

Seven steps, and you see working software from week six

Every stage has a named deliverable you can hold us to, and a demo you can click.

  1. 01

    Discovery

    1 - 2 weeks

    We learn how your business actually runs before proposing anything.

    You get: Requirements document, process map and fixed-scope proposal

  2. 02

    Planning

    1 week

    Architecture, milestones and a scope you can hold us to.

    You get: Technical architecture, milestone plan and signed scope

  3. 03

    Design

    2 - 4 weeks

    Interfaces designed and validated before a line of code is written.

    You get: Design system, approved screens and clickable prototype

  4. 04

    Development

    4 - 16 weeks

    Two-week sprints, each ending in something you can click.

    You get: Working software on staging, demoed every two weeks

  5. 05

    Testing

    1 - 3 weeks

    Tested on the devices and networks your users actually have.

    You get: Test report, performance benchmarks and sign-off

  6. 06

    Launch

    1 week

    Deployment, migration and training - with a rollback plan.

    You get: Live system, trained team and operating manual

  7. 07

    Support

    Ongoing

    90 days included, then a care plan if you want one.

    You get: Monitoring, SLA response and a monthly health report

Discovery is a fixed-fee engagement of its own, and you keep the requirements document whether or not we build it. Start there.

What clients say once it is live

“We went from losing orders every week to not losing any. The vendors onboard themselves now, which is the part I still cannot quite believe.”
Amina Njeri, Founder, Sokoni Trading — see the project
  • “The fuel savings alone paid for the build in seven months. Now I can see every bike in the city from my phone.”
    Peter Kamau, Rapid Logistics EA
  • “Our claim rejection rate was the quiet thing bleeding us. Fixing documentation at the point of care fixed the revenue.”
    Dr. Grace Wanjiru, Afya Health Group
  • “They tested on the phones our students actually own. That one decision turned the whole product around.”
    Faith Chebet, Shule EdTech
  • “We stopped renting our own customers from listing portals. The site pays for itself every month in fees we no longer hand over.”
    Samuel Otieno, Acacia Real Estate
  • “Three vendors quoted us. Trenax was the only one who asked to sit with our clerks for a day before quoting. It showed in everything after.”
    Esther Mwende, Mashamba Cooperative

Sample testimonials — replace with approved client quotes before launch.

Tools chosen so you can hire for them

We pick technology you can maintain after handover, not whatever is novel this quarter.

Frontend
Next.js, React, TailwindCSS
Language
TypeScript
Mobile
Flutter, React Native
Backend
Node.js, Supabase, Firebase
Data
PostgreSQL, Redis
Infrastructure
Docker, AWS, Vercel, Cloudflare
Design
Figma

The things clients ask before signing

If yours is not here, ask it directly - we answer plainly.

Discovery usually begins within one to two weeks of a signed proposal. If timing is critical, tell us on the first call - we occasionally have capacity sooner, and we would rather say so than let you wait.

Tell us what is not working

Thirty minutes, no deck. You will leave with an honest read on feasibility, a price band and a timeline - whether or not you work with us.

We reply within one business day.

Have a project in mind?

Free 30-minute discovery call.

Book a call