About ZetsApp

A software development company that builds, sells, and scales software

ZetsApp is a software development and SaaS studio for startups, scale-ups, and enterprises. We build custom software, deliver AI and RAG systems, and publish ready-to-adopt SaaS products across HR, CRM, healthcare, education, construction, and finance. One partner, three ways to move faster: build custom, buy a product, or blend both.

What we do

We are a full-cycle engineering partner. Discovery, architecture, UX design, front-end and back-end development, QA, DevOps, and ongoing support all sit in one accountable team β€” so features move from spec to production without weeks lost to vendor hand-offs. Our engineers cover full-stack web (React, Angular, .NET, Node.js, Django, Rails), cross-platform mobile (Flutter, React Native), production AI and RAG (LangChain, LlamaIndex, on-prem LLMs, vector databases), and cloud DevOps on AWS, Azure, and GCP.

Three ways to work with us

🧩

Build custom software

Bespoke platforms and AI features engineered around your workflows. Fixed-scope or dedicated-team engagement, with clean code you fully own.

Custom Software β†’
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Adopt a ready SaaS product

Our SaaS catalog covers HR, CRM, healthcare, education, construction, and more β€” production-tested, secure, and ready to onboard your team in days.

Browse Software β†’
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Ship production AI

RAG systems, AI agents, LLM applications, and custom ML β€” grounded in your data, with evaluation, safety, and cost control built in.

AI Development β†’

How we ship

1

Discover

Deep discovery to map workflows, integrations, and success metrics β€” then a fixed-scope proposal within 48 hours of the first call.

2

Design

UX and architecture done in parallel so build risk surfaces early. Prototypes are click-through in weeks, not months.

3

Build

Two-week sprints, working software every sprint, and demos your stakeholders actually see running. Typed, tested, documented code.

4

Ship

CI/CD, infrastructure-as-code, monitoring, and staged rollout so launches are routine events, not scheduled emergencies.

5

Support

Post-launch maintenance, optimisation, and new-feature development on a predictable monthly retainer where you want it.

Where we work

ZetsApp delivers across three primary markets, each with local compliance, hiring, and delivery details:

Compliance posture

Our engineers build with GDPR, HIPAA, and SOC 2 controls in mind from day one β€” encryption in transit and at rest, role-based access, audit logging, DPIA-ready architectures, and BAA-friendly third-party choices. On-prem and EU/UK/US-region deployment options let regulated buyers keep sensitive data inside their perimeter, including for AI and RAG workloads.

Our tech stack, at a glance

Front-end

ReactAngularNext.jsVueTypeScript

Back-end

Node.js.NETDjangoFastAPIRailsGo

Mobile

FlutterReact NativeiOS (Swift)Android (Kotlin)

AI / RAG

LangChainLlamaIndexpgvectorPineconeWeaviateLlama / Mistral

Data

PostgreSQLMongoDBRedisClickHouseSnowflake

Cloud / DevOps

AWSAzureGCPKubernetesTerraformDocker

Let's build, buy, or scale software together

Talk to an engineer and get a clear, fixed-scope proposal within 48 hours.

Contact ZetsApp β†—