Mobile applications
We specialize in React Native rather than splitting our mobile engineering across unrelated frameworks. One product architecture supports Android and iOS, with platform-specific testing, native integrations and releases where needed.
Build Android and iOS mobile applications with React Native, Expo and TypeScript. Kenya-based, globally available engineering for SaaS, operations and customer-facing apps.
Discuss this serviceMap the real user journeys and mobile device constraints first.
Build with React Native, Expo and TypeScript; connect to tested backend contracts.
Validate critical journeys and release for the agreed platforms.
These products and client systems illustrate relevant engineering work. Each case study identifies the delivery context and supported platforms.
Our products
Rent collection and reconciliation software for landlords and property managers. RentPayor connects iOS and Android apps with a web management dashboard for landlords and property managers. It handles properties, leases, rent invoicing, M-Pesa collections, partial payments, automatic reconciliation, receipts, credits and reporting.
Read case studyOur products
Voice-first journaling app that preserves the original recording, transcribes spoken entries, and uses AI to generate useful titles, summaries, and categories. Entries can be searched and revisited by date, linked to goals, supported by reminders and prompts, and protected with account, deletion, and optional biometric controls.
Read case studyOur products
School-fee billing and collection software with an Android parent experience and web administration dashboards for schools. Manages students, guardians, term invoicing, M-Pesa payments, receipts, balances and reconciliation.
Read case studyClient work
Cargo and logistics operations platform spanning mobile field workflows and back-office administration. Macsim handles loads, reservations, driver assignments, trip tracking, documents, notifications, fleet operations and finance, with a guarded M-Pesa/Daraja flow for funding a collection-account ledger and paying drivers in full or partial load installments.
Read case studyClient work
Android construction-operations application for project progress, work items, procurement, inventory and stock, financial tracking and operational reporting.
Read case studyLet's build something that lasts
Talk directly with the engineer responsible for your project. Joeltech Geek Systems works with businesses and founders in Kenya and across the world.