A closer look at one of LottoIQ's most-used features If you've ever picked lottery numbers and wondered whether some numbers come up more often than others, you're not alone. It's one of the most common questions lottery players ask, and the Draw Frequency Heatmap on LottoIQ is built to answer it visually, at a glance. How it works Every number in the pool is displayed as a ball, coloured on a scale from cool to warm based on how often it's appeared in real historical draws.