Accra, Ghana · Software development company · Est. 2023
Zyntlow is a software development company founded by Adams Eugene. TallyhubGH, Kernvo and Tresoria Beauty are live in production today; 22 more projects have been built since 2023 across commerce, field operations, health, analytics and developer tooling. TallyhubGH has an active partner programme. Offline-first, multi-tenant, and built to survive a bad connection.
Everything below is running in production. The numbers are counted from the source, and the links go straight to the real thing — no demos, no waiting list.
A multi-tenant commerce platform that keeps selling when the internet stops — offline-first POS, warehouse-scoped inventory, credit sales, purchasing, reporting and on-device AI, shipping as a web app and a Tauri desktop binary from one codebase.
Core banking built around a real double-entry general ledger: the customer officer, the cash desk, the loan book and the accountant all write to the same books, and the books are never allowed to be out of balance.
An online store for a Kumasi hair brand — premium extensions, wigs, accessories and care products — with mobile money as the primary way to pay, honest delivery pricing quoted before checkout, and an admin dashboard the owner runs the shop from without a developer.
The commerce platform on this site has a partner programme. Share a code, and when a referred business subscribes you take 20% of what they pay — 30% from referral 11 onward — every month for 12 months, tracked live.
Free. You get a unique six-character code. You do not need a TallyhubGH subscription of your own.
A link, a QR code, WhatsApp, or the code typed at registration. Sign-ups show on the dashboard immediately.
Commission starts when a referred business subscribes. Cash out to MoMo, a bank or a card, in cedis, through Paystack.
Clients already ask what to use.
You are already installing the hardware.
Stock control comes up in every engagement.
One conversation reaches dozens of traders.
A link, a QR code, and the shops around you.
The shop next door will ask what you run.
partner.tallyhubgh.com
Work it out
Real plan prices. Real rates. Nothing here is rounded up to look better.
One more referral unlocks 30% on everything after
What they subscribe to
What you would earn
GH₵350
every month, once they are all subscribed
GH₵4,200 over the 12 months each one pays
Referrals 1 – 10
Referral 11 and beyond
An estimate, not a promise: you earn on the months a referred business actually pays. A cancel in month three pays you for three months. The rest keep running.
Most business software is written on the assumption that a request will succeed. In a shop in Accra with intermittent power, a shared counter device and a queue of customers, that assumption is a bug. A till that refuses a sale because a socket dropped is worse than no till at all.
So every product here starts from the opposite premise: the device is the source of truth, the server is eventually consistent, and every write is designed to be replayed safely. That constraint produces software that is faster and more reliable everywhere — it just happens to be non-negotiable here.
Every one is backed by something already running in production. These four can start soonest; the rest are on the services page.
Move a financial institution through a reclassification without losing its books.
Kernvo runs loan classification, provisioning, dual control and AML case management in production today.
Somebody accountable for the server at two in the morning.
Three products run on this stack — nginx, systemd, GitHub Actions deploys and automated certificates.
Alerts your customers trust, on a balance you can audit.
A prepaid unit ledger with packs, top-ups and per-movement accounting, running in Kernvo.
Reach the customers who are not on a smartphone, and take their money safely.
USSD session handling and mobile money collection, priced per network, running in production.
Eight domains, one engineering practice. The hard problems repeat inside a domain and rarely across them, which is why the work is grouped this way rather than by year or client.
Point of sale, inventory, and the ledgers underneath them.
Accounts, ledgers, transfers, and the screens that expose them.
Software that has to work where the network does not.
Records, scheduling and care pathways.
Measuring what visitors do, then changing it.
Sharpening the tools that build everything else.
Courses, cohorts, and school administration.
Booking, ordering and community apps for local businesses.
Client sites taught delivery. Analytics work taught measurement. Commerce taught what happens when software is load-bearing and a shop cannot trade without it.
Client and community work — laundry, school and teaching tools — alongside the browser experiments and Chrome extensions that became a habit of building small, sharp utilities.
Deep work on behavioural analytics: heatmap filtering and benchmarking, comparison filters, page-vitals instrumentation, and the first site graders — including an AI-assisted version.
The portfolio shifts from sites to systems: hospital management, e-learning with a separate API, the Halo widget and plugin runtimes, StockFlow inventory, and the beginnings of TallyhubGH.
TallyhubGH becomes a full commerce platform — offline POS, Tauri desktop, on-device AI, billing — and goes live at tallyhubgh.com. The banking work built as Franlind ships as Kernvo at kernvo.com. Tresoria Beauty opens a mobile-money storefront for a Kumasi hair brand at tresoriabeauties.com. Farm Ops, MamaCare, Frontdesk, MarkFlow and Canvas Studio follow. Zyntlow becomes the name over all of it.
Software development from Accra, GMT+0, overlapping with Europe for a full day and the Americas for half of one. The same codebases run on a counter in a market and in a browser tab anywhere else.
Tell me what the business does and where the current system gives up. You will get an honest answer about whether I can help, and how I would approach it — not a pitch.
