The One time services are the ones which are done to your project only once.
Consider you need one or two modifications which are simple and you don’t wish to support for any packages as you need this to be done once. In this case, Hitasoft provides the clients with an option of One Time Services.
Yes, this One Time Services will let you fix any issue once and instantly by paying a minimal cost for the service. Whatever your issue might be, you have an opportunity to fix this without enrolling to a package. That opportunity is what One Time Services and it can be more advantageous as you only have to pay for the services you pick.