Businesses opt for custom software solutions to solve their very specific problems and meet unique needs. That means custom products vary in nature and complexity. Therefore, the timeframe for development will be proportional to the scope of each individual project.
Generally, the most time-consuming phases of the general software development lifecycle (SDLC) model are planning, development, and testing. Thus, gathering requirements and researching the market averages 2–6 weeks, depending on the amount of information you have to start with.
Software design services usually take about 2 weeks, while development depends entirely on the number of features, integrations, and platforms you want your software to work with. The same is true for testing, as the more code there is to make, the more you have to check.
Offhand, we can say that an average custom product of moderate complexity and ready-made planning takes around 6–12 months to develop. The time frame extends in proportion to the growing number of functionalities, features, modules, APIs, and external libraries.