Mobile apps engineered for the real world.[1]
PEYN Technologies helps businesses build, improve, rescue and maintain reliable mobile applications across iOS and Android.
[1] Real users on real devices. Unreliable networks, OS updates, store reviews, production traffic — and a business depending on all of it.
- Platforms
- iOS and Android, one codebaseiOS + Android
- Engagements
- Build · Improve · Rescue · Maintain
- Relationship
- Long-term engineering partner
- Based in
- Accra, Ghana — serving clients globallyAccra · global
We build, improve and maintain mobile apps for growing businesses.
Every engagement maps to where your app is in its life. Start from an idea, or bring us in mid-way — we meet the product where it is and take responsibility from there.
Turn an idea or business requirement into a production-ready mobile application.
MVP · STORE LAUNCH
Add functionality and improve UX, performance, architecture and reliability.
REFACTORING · RELIABILITY
Take ownership of unstable, abandoned, outdated or difficult mobile applications.
DOCUMENT · HAND BACK CONTROL
Provide long-term engineering, releases, monitoring, upgrades and technical support.
UPGRADES · SUPPORT
Turn an idea or business requirement into a production-ready mobile application.
Add functionality and improve UX, performance, architecture and reliability.
Take ownership of unstable, abandoned, outdated or difficult mobile applications.
Long-term engineering, releases, monitoring, upgrades and technical support.
Your app already exists. That doesn’t mean everything is fine.
Maybe the original developer has moved on. Maybe every release feels risky. PEYN takes ownership of existing mobile applications: we diagnose what’s wrong, stabilise what matters and put a maintainable engineering foundation under your product.
We diagnose what’s wrong, stabilise what matters and help you take control of it.
We’ll help you take control of it.
Start with evidence, not assumptions.
A fixed-scope technical review of your application and how it ships. You receive a written report with prioritised findings and a practical stabilisation plan.
- A.01ArchitectureStructure, state management, boundaries and how hard change has become.
- A.02PerformanceStartup, rendering, memory, network behaviour and crash patterns.
- A.03MaintainabilityCode quality, test coverage, dependencies and documentation.
- A.04SecurityAuthentication, data storage, secrets handling and API exposure.
- A.05DeploymentBuild pipeline, signing, store accounts and release process.
- A.06Technical debtWhat to fix now, what to plan for, and what can safely wait.
Professional engagements, shaped around your app.
Each engagement starts with a defined scope, agreed milestones and a clear definition of done.
S.01Mobile App Development
New cross-platform iOS and Android products, from discovery through production.
S.02MVP Development
Focused first versions designed to get a real product into users’ hands.
S.03App Rescue & Modernization
Take over problematic or legacy applications, stabilise them and establish a maintainable engineering foundation.
S.04Feature Development
Focused engineering engagements for existing applications.
S.05Mobile App Audit
Architecture, performance, maintainability, security, deployment and technical-debt assessment.
S.06Mobile App Maintenance
Ongoing engineering through PEYN Mobile Care.
S.07Dedicated Mobile Engineering
PEYN operates as an extension of your existing product or engineering team.
Launch is the beginning of production—not the end of development.
Operating systems change. Dependencies age. Store policies move. Users find edge cases. PEYN Mobile Care keeps a named engineering partner responsible for your app every month after release.Operating systems change, dependencies age and store policies move. Mobile Care keeps an engineering partner responsible for your app after release.
- v1.0 LAUNCHMobile Care begins
- 1.0.1 · CRASH FIX
- OS COMPATIBILITY
- 1.1 · FEATURE
- DEPENDENCY UPGRADE
- STORE POLICY UPDATE
- 1.2 · FEATURE → ONGOING
- C.01OS compatibilityReady for each new iOS and Android release before your users are.
- C.02Dependency upgradesFlutter, SDKs and packages kept current, deliberately and safely.
- C.03Crash monitoringProduction errors tracked, triaged and resolved by priority.
- C.04PerformanceStartup, responsiveness and resource use reviewed over time.
- C.05Store complianceApp Store and Play Store requirements met ahead of deadlines.
- C.06ReleasesPredictable, documented releases with staged rollouts.
- C.07Bug fixesReported issues reproduced, fixed and verified.
- C.08Small improvementsSteady product refinements without starting a new project.
- C.09Technical planningA roadmap for what the app will need next — before it becomes urgent.
- OS compatibility
- Dependency upgrades
- Crash monitoring
- Performance
- Store compliance
- Releases
- Bug fixes
- Small improvements
- Technical planning
A disciplined process you can see at every stage.
Each stage ends with something you can review: a document, a working build or a decision. Nothing important happens out of view.
Discover
Understand the business problem, users, constraints and technical environment.
Output
DISCOVERY NOTESDefine
Establish requirements, scope, architecture and delivery plan.
Output
SCOPE · ARCHITECTURE · PLANEngineer
Build in structured development phases with regular working releases.
Output
WORKING BUILDSValidate
QA, client acceptance and production readiness.
Output
PRODUCTION READYLaunch
App Store and Play Store submission and production rollout.
Output
LIVE IN STORESMaintain
Monitoring, upgrades, improvements and long-term engineering support.
Output
PEYN MOBILE CARE
- 01
Discover
Understand the business problem, users, constraints and technical environment.
- 02
Define
Requirements, scope, architecture and delivery plan.
- 03
Engineer
Structured phases with regular working releases.
- 04
Validate
QA, client acceptance and production readiness.
PRODUCTION READY - 05
Launch
App Store and Play Store submission and rollout.
- 06
Maintain
Monitoring, upgrades, improvements and long-term support.
↺ Loops back to Engineer
Engineering responsibility, documented.
Mobile wallet and merchant payments for [CLIENT NAME]
- Problem
- [Client] needed customers to send money and pay merchants from their phones, without a branch visit.
- Engineering challenge
- Secure authentication, safe retries on payment requests, and reliable behaviour on intermittent mobile networks.
- What PEYN delivered
- Cross-platform app, payment-flow architecture, automated release pipeline and production monitoring.
- Technology
- FLUTTER · DART · REST API · FIREBASE · CI/CD
- Outcome
- [Verified outcome — confirmed with client before publishing]
Appointment and patient communication app
Booking, reminders and secure messaging between patients and a care provider.
Field operations app for distributed teams
Offline-first task capture and sync for staff working away from the office.
On-demand service booking app
Customer booking, provider scheduling and in-app payments in one product.
Legacy app takeover and Flutter upgrade
Inherited codebase stabilised, upgraded, documented and returned to regular releases.
Mobile wallet and merchant payments
- Challenge
- Secure auth and reliable payments on weak networks.
- Outcome
- [To be verified]
Legacy app takeover and Flutter upgrade
- Challenge
- Undocumented codebase, stalled releases.
- Outcome
- [To be verified]
Appointment and patient communication app
- Challenge
- Sensitive data, reminders that must arrive.
- Outcome
- [To be verified]
Why teams trust PEYN with their app.
- W.01
Engineering ownership
We think beyond tickets and features and take responsibility for how the application works as a product.We take responsibility for how the application works as a product — beyond tickets and features.
- W.02
Production-minded
Architecture, monitoring, security, releases and maintainability are considered from the beginning.Architecture, monitoring, security and releases considered from the start.
- W.03
Clear communication
Structured updates, defined milestones and transparent technical recommendations.Structured updates, defined milestones, transparent recommendations.
- W.04
Built for continuity
We document our work and build systems teams can maintain and extend.Documented systems your team can maintain and extend.
- W.05
After-launch partnership
PEYN remains available after production through long-term mobile engineering support.Long-term mobile engineering support once you’re in production.
Who we work with
- ABusinesses with existing mobile applicationsBusinesses with existing mobile apps
- BGrowing companies launching their first appGrowing companies launching a first app
- CStartups building focused MVPsStartups building focused MVPs
- DSoftware and design agencies needing a mobile engineering partnerAgencies needing a mobile engineering partner
The stack, for the technically curious.
Tools are chosen for maintainability first. Flutter is our primary framework for cross-platform iOS and Android.
- Client
- Flutter / DartAndroidiOS
- Backend & integration
- REST APIsSpring BootFirebase
- Delivery
- CI/CDApp Store releasePlay Store release
- Observability
- Crash monitoringAnalytics
- Infrastructure
- Cloud infrastructure
08 — Stack
- Flutter / Dart
- Android
- iOS
- Firebase
- REST APIs
- Spring Boot
- CI/CD
- Cloud
- Analytics
- Crash monitoring
Senior engineering attention without enterprise bureaucracy.
PEYN Technologies is a founder-led mobile engineering company in Accra, Ghana. Your project is led directly by senior engineering — not passed down a chain of account managers.
A founder-led mobile engineering company in Accra, Ghana. Senior engineers lead your project directly, with selected collaborators where needed.
- 01
Senior involvement
The people who scope your app are the people who engineer it.
- 02
Direct technical leadership
You speak with the engineer making decisions, not a go-between.
- 03
Selected collaborators
Specialists join when a project needs them — chosen, not assigned.
- 04
Built to scale
Processes designed for the wider engineering team PEYN is growing into.