Still not sure do you need a custom CRM or not? Just think about it: quality ready-made CRM solutions are expensive, while usually, your company does not need the whole set of provided functions. The cost of a custom CRM development also is not chip, however, when you are building a CRM system, you pay for the functions required particularly by your company. Plus, employees will not spend a lot of time exploring the new product, because CRM is initially created under the workflow, already established in the company.