What a mobile app costs to build in Montenegro

A product build starts at four thousand euros, which covers a full-stack application from the interface through to the database, a mobile-first design system, and the thing deployed, monitored and handed over. What the figure cannot tell you is which app you are buying, because the distance between the cheapest honest version and an expensive one comes down to a handful of decisions.

Roles are the first of them. An app where every user is identical costs a fraction of one where a customer, a contractor and an administrator each see different data under different permissions, since every role multiplies the surface that has to be designed, built and then tested against all the others. Body Heal carries three of them, and that is most of the difference between it and a single-audience app.

Native or web is the second. FixMan shipped natively on Android and iOS because a home services app living on only one of them misses roughly half the people who need it, and Kalo is native iOS because a camera-first tracker succeeds or fails on the capture experience. Native means two builds, two review processes and two sets of release mechanics rather than one.

Integrations are where estimates usually go wrong. Anything that has to talk to a system which already exists inherits that system's constraints, and those are never visible from the outside. Hotel AI could not use the booking platforms' APIs at all at that size, so the whole design had to move to the mailbox instead.

Language is the last one, and it is underestimated most often. A second language is not a translation file bolted on at the end, it is a second set of decisions about length, tone and what a button is called, which is why Kalo carries no English fallback anywhere in its interface.