Yes, but the only way to force them is a giant user base.
Also keep in mind that "porting" apps with a substantial GUI or other parts that rely on the platform they were develped for, is as hard as developing a new app. The only exception is a multiplatform toolkit, but both applications you mentioned don't seem to use one.
An app like true caller would not be very hard, iff you had access to their servers, i.e. iff they provide a public api.