We develop your custom business software usable within a month, on a fixed monthly budget,

A model where you pay a fixed monthly budget for continuous development. Project management does not rely on initial estimates: the scope adapts to what you learn. You change priorities at any time, with no amendment.

With DEVEDANOS, your application is usable within a month. We frame with you, then we develop continuously on an acceptance environment that we administer. Every day, you see the application move forward there. You use it and test it yourself. When you want to put it online, you settle the invoice and we take care of it. That payment also signs off the trial period. Then we adjust your software as your business evolves, for as long as you wish.

Custom software development works like the relationship between an author and a printer. You know your business, your users and your information system. We master software engineering. Your involvement is essential: acceptance testing of features, regular feedback, priority decisions. Without that, no provider can deliver software that matches your needs.

No invoice issued. The trial period lasts up to 15 working days. If you do not want the deliverables, no payment due. The produced code remains the property of DEVEDANOS.

Three cases must be distinguished. A regression (a feature you had tested and approved behaves differently after a change): our zero-regression guarantee applies, we fix it and add an automated test that prevents its reappearance. A defect found during acceptance testing (the delivered behavior does not match what you expected): either the specification we prepared together contained an error, or the feature does not respect the specification. In both cases, the work is not finished, we finish it. A behavior change requested on a feature already tested and approved: that is an evolution, not a bug.

Our development process is built on small steps. Each feature is specified with you, built, tested, and deployed individually. Because each step is small, defects are spotted fast and fixed fast. Automated tests verify the expected behavior with every change we make. We test and sign off every feature. If you’d rather not delegate this, you do it yourself. In production, monitoring detects what affects your users early. And our zero-regression guarantee means every bug fix is locked in by an automated test: once fixed, it stays fixed. The usability of each interface is validated through real usage in production.

An application is not a monolithic block, but a set of independent features. The Manifesto for Agile Software Development and lean principles push us to prioritize high-value features from the start. Each feature is specified, developed, tested, accepted and deployed individually. Our Continuous Delivery discipline guarantees easily modifiable code, quickly adaptable to new needs, and an application in a working state at all times. That is what allows us to deliver applications usable within a month, in just a few features.

Custom applications: SaaS platforms, marketplaces, e-commerce, job boards, business applications, CRM, business management software, monitoring, client portals, extranet, admin consoles and AI integration into existing systems. Whether you want to automate business processes, overhaul an unsuitable off-the-shelf solution or modernize an existing information system, we build the software tailored to your specific needs.

If you have one, send it to us. We will look in it for your objectives, your constraints and the details that make this application yours and make it unique. The only question we want to ask about your specification: was each feature defined with your users, based on their needs, or are these only your ideas? At Microsoft, of the ideas tested with users, only a third improved the target metric, another third changed nothing, and the last third made it worse (Kohavi and Thomke, Harvard Business Review, 2017). That is why, from the first month of development, we aim for an application that is usable with a few essential features. It lets us complete a first full loop: start from your users’ needs, define with them what to build, develop it, put it online, then gather their reactions and their new needs. Each loop guides the next, feature by feature. The budget is set with you, according to the time you decide to invest in developing your application and in continuously adjusting it as your users’ needs evolve. We do not determine it from a list of features and estimates of the time needed to develop them.

To date, science has found no reliable tool for estimating the cost of developing software. Estimates systematically turn out wrong, and the vaguer the project, the higher the quote. But software is not a monolithic block. It is a set of independent features, and that reality changes everything. Since each feature can be specified, developed, tested and delivered individually, the real question becomes: what to deliver first to alleviate your problem as fast as possible? That is exactly what Continuous Delivery, lean and agility enable. At DEVEDANOS, you pay a fixed monthly budget for delivered features that have been tested and signed off. The more we add, the more your problem recedes, with the long-term prospect of solving it entirely. We build this budget with you, from your numbers, over a horizon planned together at the second meeting that follows the call.

The trial period lasts up to 15 working days. During this time, the source code remains hosted on our systems. If you request access to the code before the end of the period, the trial ends and invoicing is due at the end of the month, payable within 15 days.