DUOL vs GFI Comparison

Duolingo Inc is a technology company that develops a mobile learning platform to learn languages and is the top-grossing app in the Education category on both Google Play and the Apple App Store. Its products are powered by sophisticated data analytics and artificial intelligence and delivered with class art, animation, and design to make it easier for learners to stay motivated master new material, and achieve their learning goals. Its solutions include the Duolingo Language Learning App, Super Duolingo, Duolingo English Test: AI-Driven Language Assessment, Duolingo For Schools, Duolingo ABC, and Duolingo Math. It has four predominant sources of revenue; time-based subscriptions, in-app advertising placement by third parties, and the Duolingo English Test, and In-App Purchases.

Gold Fields Ltd is a producer of gold and is a holder of gold reserves and resources in South Africa, Ghana, Australia and Peru. In Peru, the company also produces copper. The company is involved in underground and surface gold and surface copper mining and silver and related activities, including exploration, extraction, processing and smelting. It conducts underground and surface mining operations at St. Ives, underground-only operations at Agnew, Granny Smith and South Deep and surface-only open pit mining at Damang, Tarkwa and Cerro Corona. The company's revenues are derived from the sale of gold that it produces.