Don't get caught up on the name of the feed. Most all flock/flock raiser is similar to starter is similar to grower. The important thing is the nutrition panel, and the size of the feed itself (as small chicks would struggle to eat large food). I started feeding hatch-to-hen crumble before starter, as the starter I get is chunkier than I'd like. I only bother with the starter as I feed fermented as well as dry, so the starter is to get the chicks acclimated to fermented feed.