How big is Onix next to Pikachu? In Size Up you see two Pokémon: one fixed, one you drag or slide to the size you think it really is. Lock it in and both are redrawn at their official heights — the closer you were, the more points, up to 1,000 per round and 5,000 per Daily.
Everyone gets the same five pairs each day, with a new Daily at midnight UTC. Missed one? Open the calendar and play any past day. Want more? Unlimited deals fresh pairs whenever you like, and Stair and Higher or Lower test the same eye in different ways.