Whether you want to keep track of the current Exalted Orb prices, see how many Chaos Orbs you should save up for your favorite unique items, or properly price your currently stashed items for sale, PoE Trends has your economic needs covered.
Inspired by the popular web app, poe.ninja, all trading data for Path of Exile is available at your fingertips. With this app, you may key yourself up to date on today's currency exchanges (in Chaos Orbs) for every currency item, and monitor the fluctuating prices of items of different categories (unique flasks, maps, prophecies, etc.). You may also dive deeper into historical trading data by viewing charts for how prices of currencies and items have changed over time.
Other conveniences include a wiki page lookup, as well as a poe.trade lookup for each item on the market. With these features, you may get more information specific to an item, as well as information on what trade listings are changing the prices.