Unfortunately the short answer to your question is no: there is not an automated GOTS/COTS tool that will prioritize funding distributions to individual CLINS/SLINS.

There are however a few existing tools that will assist with building of your automated system:

1) OUSDC Rule-of-Thumb Acquisition Obligation and Expenditure Rates - single-sheet reference is to provide the Obligation and Expenditure Rates utilized in assessing the execution performance of the MILCON, O&M, Procurement and RDT&E appropriations. https://www.dau.edu/tools/t/OUSDC-Rule-of-Thumb

2) Funds Management Platinum Card - convenient quick reference to key DoD funds management definitions, policy, and processes.  It includes the appropriation life cycle for current, expired and canceled funds. https://www.dau.edu/tools/t/Funds-Management-Platinum-Card