  We establish new Bombieri-Vinogradov type estimates for a wide class of
multiplicative arithmetic functions and derive several applications, including:
a new proof of a recent estimate by Drappeau and Topacogullari for arithmetical
correlations; a theorem of Erd{\H o}s-Wintner type with support equal to the
level set of an additive function at shifted argument; and a law of iterated
logarithm for the distribution of prime factors of integers weighted by
$\tau(n-1)$ where $\tau$ denotes the divisor function.
