To evaluate implementing is context depend, you can to evaluate indicators in short time (feasibility, penetration, aceptability) hal term indicaators as adherence, and late indicators as outcomes (positives- changes on health condition, or negatives, adverse events due to use techonlogy).
Basic steps of evaluation are input, process, output, outcome & impact of a particular service component based on its objectives & targeted intervention programme. U need to select appropriate indicator/s for each of the above steps. Then assess quantitatively & qualitatively against each indicator.