I run a startup and have bootstrapped funds, are there flexible payment plans?

We primarily work with Startups and up and coming Entrepreneurs, so we understand the bootstrapped struggle. Therefore, we created a simple payment plan for all of our clients. In order to get started with the project, you would need to pay an initial 35% deposit of the overall project cost and the rest of the payments would be broken down into bi-weekly or monthly payments as we develop the app in the upcoming months following with one final payment upon delivery of the project.