Question 1

How much does custom ERP software development cost in 2025?

Accepted Answer

Custom ERP development typically costs between $40,000 and $400,000+ depending on scope. A focused ERP for a single department starts around $40,000–$80,000, a mid-sized company-wide ERP runs $120,000–$250,000, and enterprise-grade systems with custom modules, integrations, and migration can exceed $500,000. At JJ Software we provide a fixed-price quote after a discovery sprint, so you know the full cost before development begins.

Question 2

How long does it take to build custom software?

Accepted Answer

Most custom software projects at JJ Software ship in 12–24 weeks. An MVP for a focused SaaS or internal tool takes 8–12 weeks. A full ERP or marketplace platform typically takes 5–8 months. Complex enterprise systems with legacy migration can take 9–18 months. We use two-week sprints with demoable progress at the end of each sprint, so you see the product taking shape in real time.

Question 3

What is the best tech stack for custom software development?

Accepted Answer

There is no single best stack — it depends on your requirements. For most web products we recommend Next.js + TypeScript + PostgreSQL + AWS for its scalability, talent pool, and long-term maintainability. For mobile, React Native or Flutter cover 90% of use cases. For AI-heavy products, we add Python services with FastAPI, OpenAI/Anthropic APIs, and vector databases like Pinecone or pgvector. We document our stack recommendations in a discovery sprint before any code is written.

Question 4

Do you build AI-powered software and chatbots?

Accepted Answer

Yes. JJ Software has a dedicated AI team that builds LLM-powered chatbots, document intelligence pipelines, RAG systems, predictive analytics, and workflow automation. We work with OpenAI, Anthropic, open-source models (Llama, Mistral), and custom fine-tuned models. Every AI feature we ship is grounded in real business value — we don't bolt on AI for marketing value.

Question 5

Can you migrate our existing ERP or legacy software?

Accepted Answer

Absolutely. Legacy modernization is one of our core specialties. We use the strangler-fig pattern to migrate systems incrementally — running old and new systems in parallel, cutting over module by module, with full rollback capability at every stage. This minimizes risk and ensures zero business disruption during migration. We have migrated systems from SAP, Oracle, Tally, custom PHP/MySQL stacks, and many others.

Question 6

Do you provide post-launch maintenance and support?

Accepted Answer

Yes. Every project includes 90 days of free bug-fix support after launch. After that, we offer flexible maintenance retainers (typically 10–40 hours per month) covering bug fixes, security patches, performance monitoring, feature enhancements, and infrastructure management. Most clients keep us on a long-term retainer because we know the codebase better than anyone else.

Question 7

Who owns the source code and intellectual property?

Accepted Answer

You do — 100%. All source code, designs, documentation, and credentials are transferred to you at delivery. We work in your Git repositories (or set them up for you), use your cloud accounts, and provide full technical handoff documentation. We never hold code hostage or charge licensing fees for software we built for you.

Question 8

Which industries do you serve?

Accepted Answer

JJ Software has shipped software for manufacturing, logistics, healthcare, fintech, e-commerce, education, real estate, and SaaS. We have particular depth in regulated industries (HIPAA, SOC 2, GDPR) and high-traffic consumer platforms. If you're not sure whether we've worked in your industry, just ask — we'll be honest about whether we're the right fit.