Custom Software & App Development Company for serious products.
Web apps, mobile apps, CRM, ERP, SaaS and AI, built by 100+ senior engineers for startups and enterprises. Get a fixed-scope estimate within one business day.
Looking to build an app like…
Pick a model to see how we'd build itKundli and horoscope engines, live astrologer consultations and per-minute billing, built to handle peak-hour demand and secure transactions.
AI that ships to production, not to a demo.
We build AI into the products and workflows you already run, with the evaluation, guardrails and cost controls that keep it trustworthy once real users arrive.
Chat and voice assistants inside your app or support desk, grounded in your own data and handing off to humans cleanly.
Search and answers across contracts, manuals and tickets, with sources shown so people can check the answer.
Agents that read, classify, route and act on invoices, emails and forms, with approval steps where it matters.
Classification, forecasting and recommendation models trained on your data when an off-the-shelf model is not enough.
Test sets, accuracy tracking, content filters and PII handling, so you know how it performs before and after launch.
Model selection, caching and hosting on AWS, Azure or GCP that keep per-request cost predictable at scale.
In our clients’ words.
Published reviews · Google, Trustpilot“They brought our vision to life with a modern, user-friendly UI/UX design and delivered the mobile app exactly as we had imagined — on time and with top-notch quality.”
“Their honest, reliable, and hardworking team delivers a flawless product beyond expectations.”
“…he displayed clear understanding of the project, deliverables which made me initiate project with Mariox Software. I really appreciate him and his team.”
Platforms in production.
Cross-border payments where the ledger must balance to the cent across providers, currencies and retries.
App + web
A large third-party seller base, where catalogue quality and seller tooling decide whether the marketplace scales.
Marketplace + web + admin
Booking and practice management where the provider side decides whether the patient side works at all.
App + web + provider platformHow large engagements run.
Built for procurement, security review and boards who want a number they can defend.
Two to three weeks with your stakeholders. Requirements, constraints, integrations and risks, written down.
A costed plan your board and procurement can defend. You keep it whether or not we build it.
Architect, engineers, QA and a delivery lead. Fortnightly demos and a board you can open any day.
Staged rollout, monitoring in place before go-live, and support terms agreed up front.
Certified on the platforms we deploy to.
Verifiable on requestCleared for security review.
AWS, Azure and Google Cloud credentials held by engineers across the team, verifiable on request.
Code lives in your repositories and cloud accounts. Full IP assignment in the contract.
Share nothing sensitive until you are covered. We sign yours or provide ours.
Teams in India, the US and Australia, so your working day always has cover.
App development services.
All services ↗Talk to a solution architect.
Not a sales rep. An architect reads your brief and replies within one business day. NDA available before the first call.
We have 100+ engineers in four countries and run multi-squad programmes. You meet the actual team before signing.
A paid discovery produces a fixed proposal. Change is handled openly and priced before it is built.
Yes. We complete vendor questionnaires, sign NDAs and MSAs, and work inside your security requirements.
Most clients keep us on for support and the next phase. Everything is documented so you can also take it in-house.