World City Atlas app for iPhone and iPad

Learn the population of cities across the globe with this app. Every country except France, Germany, Italy, and Spain are supported.

A slider control selects the range of population. Easily query for big cities, small cities, and custom population ranges. For instance, "above 100k", "below 25k", or "between 5k and 40k".

Tap a pin to get the name of the city and its population.

Touch and hold anywhere in a country or U.S. state to load cities within your population range setting. This keeps the screen from becoming too cluttered.

This app works as a reference source, to help plan a trip, or to help understand a region.