Know what to build first.
A paid discovery sprint maps your workflows, users, and systems, then turns them into a clear scope, timeline, and fixed price.
01 / Discovery and scopeCustom web apps, mobile apps, portals and websites your team and customers actually use. Fixed scope, senior engineers, and a working product you own.
Book a 20-minute callLet's sit down and align on how we can help your business
Built for how you work
For companies that have outgrown spreadsheets, patched-together SaaS, or a website that no longer matches the business. You bring the operation; we build the software around it.
A paid discovery sprint maps your workflows, users, and systems, then turns them into a clear scope, timeline, and fixed price.
01 / Discovery and scopeWeb apps, mobile apps, portals, and websites built in two-week sprints. You see working software from week two, not a slide deck at month six.
02 / Design and buildHosting, monitoring, security updates, and ongoing improvements after launch, with a monthly report on uptime, usage, and what we shipped.
03 / Launch and supportOur full range of services
Strategy, design, engineering, and support. Bring us a single project or build a long-term product roadmap with us.
Internal tools and customer-facing platforms.
On your customers’ and team’s phones.
A home that matches the business.
Connected systems. Fewer surprises.
These are our available services, not a single package. coello.dev Build has a defined, fixed-price scope. Hosting, third-party licenses, app store fees, and work outside the agreed scope are quoted separately before we start.
How we work together
We discuss the problem, your users, and your current systems. You’ll know whether custom software makes sense before spending a dollar.
We map workflows, design key screens, and agree on a fixed price and timeline. You keep the blueprint either way.
A demo every two weeks, a shared project board, and a launch plan. You always know what’s done, what’s next, and what it costs.
A fixed-price project
For one app or website, one agreed scope, and one fixed price. No hourly billing surprises, no open-ended invoices.
Typical builds run 8–16 weeks. Larger platforms are scoped in phases, each with its own fixed price. Most clients continue on a monthly support plan after launch.
Fixed price agreed after discovery. Applicable taxes are additional.
Discovery is billed separately and credited toward your build. Payments are milestone-based. You own the code and accounts from day one.
Before we talk
Often you should, and we’ll tell you if so. Custom software makes sense when your process is a competitive advantage, when you’re paying for five tools that don’t talk to each other, or when per-seat fees keep climbing.
Plan for a few hours during discovery, then a 30-minute demo every two weeks and quick answers on our shared project channel. One decision-maker on your side keeps everything moving.
The price is fixed against an agreed scope. If you want to add something mid-build, we quote it before doing it, and you decide whether to add it now, swap it for something else, or save it for phase two.
You do. Code lives in your repository, apps are published under your developer accounts, and hosting runs in your cloud account. Full documentation is included at handover.
Yes. We regularly connect to CRMs, ERPs, accounting software, payment providers, and legacy databases. Discovery confirms what each integration requires before we price it.
Every build includes 90 days of fixes. After that, most clients choose a monthly support plan for hosting, security updates, monitoring, and new features, with a clear monthly report on what was shipped.

Who you’ll work with
I started coello.dev to give growing businesses the kind of custom software usually reserved for companies with an in-house engineering team. The aim is simple: software that fits how you actually work, built properly and owned by you.
Our first conversation starts with your business: what’s slowing your team down, what your customers expect, and where you want to be in two years. We’ll talk through what a build could look like, agree on a clear scope, and decide whether working together makes sense.
Start with a conversation
In 20 minutes, we’ll discuss your needs and outline what a first build could include.
Book a 20-minute call