We prepare an estimate for the project depending on the format of the work. We usually use two types - Fixed Price and Time & Material.
Working with Fixed Price means that an estimate is first drawn up. It strictly defines the scope of work and its content, timing and cost, and takes risks into account. As a result, the customer knows exactly how much he will pay for the project. But to make changes to the project, you will need to return to agreeing on the estimate, timing and cost: all modifications are formalized through an additional agreement and paid separately.
A fixed price contract is suitable for projects with a clear understanding of the desired result. If you understand that there will be changes in the project, then it is better to choose another option.
Time&Material, in turn, allows you to fix the rate of developers and other specialists per hour, and the work on the project is divided into periods (usually a month). At the end of each period, the cost of work is calculated in accordance with the time actually spent according to our tariffs. When new tasks arrive, we make a preliminary assessment, but it may change during the implementation process.
This is a cost-per-use pricing model that is suitable for projects with changing requirements and active customer participation in the development process. Work on T&M, as a rule, is carried out using flexible methodologies, which allows development to be carried out in iterations and once in a certain period to obtain a ready-to-use product or changes in it. The customer can add or remove new functions without entering into a new contract. The team keeps him in the loop at all times - we ensure transparency of the process through regular meetings, reports and time tracking.

You have a detailed technical specification with a complete description of all functional requirements, user scenarios, and data structure. At the same time, fixed cost is more important than process flexibility. Your option is Fixed Price.
There is no detailed technical specification, you need to quickly assemble an MVP, you have an already implemented project that needs large-scale development. We recommend choosing T&M.
There are also combined options - you need to simultaneously perform many small development and technical support tasks and implement additional large-scale services and projects. Small tasks are carried out in the T&M format, services and projects can be carried out in the Fixed Price format. At the same time, we leave the possibility of changes even on Fixed Price projects, subject to clear justification and agreement with the client.
For clients with large projects and large-scale development tasks, we offer a combined option, which can both fix costs and risks for the client, and also provide flexibility and the ability to change priorities “on the fly.”

We provide a guarantee for projects executed under a Fixed Price agreement. The warranty period is 6 months from the date of signing the project acceptance certificate. If during this period you find errors in the work, we undertake to correct them. The guarantee is valid if no changes have been made to our code or settings.