Bloom: Stock Market Research is a free iPhone app designed for investors looking to make well-informed investing decisions. It falls under the category of Business & Productivity, specifically in the Finance subcategory.

The app provides efficient research tools for stocks and ETFs, allowing users to explore and discover undervalued investments. Curated collections make it easy to find investments that are worth both time and money.

One of the standout features of Bloom is its ability to help users understand why stock prices are moving. Users can view their entire watchlist at once or investigate historical price charts to gain insights into price movements. The app provides explanations for price fluctuations, helping users make informed decisions.

Additionally, Bloom offers a rating system that allows users to quickly assess a company's health. This provides a snapshot of a company's overall performance before diving into more detailed stats, comparisons, and investor reports.

Overall, Bloom: Stock Market Research is a valuable tool for investors who want to stay informed and make educated investment decisions.