No, a cosigner or co-applicant will not improve your chances of approval to refinance a loan with MPOWER.

MPOWER does not require a cosigner for its loans. By eliminating the need for a cosigner, MPOWER aims to provide a more inclusive lending solution accessible to a broader range of students, particularly those from diverse financial backgrounds. 

Therefore, when applying for a refinance loan with MPOWER, the inclusion of a cosigner or co-applicant is not a factor that will improve the chances of loan approval.