PSO vs DUOL Comparison

UK-listed Pearson is a testing and educational provider. Pearson's primary operations are in assessment and qualification testing and higher education, but they also provide English education and testing, virtual learning, prehiring testing and screening, and upskilling/reskilling. The company divested noncore businesses, including the Financial Times, The Economist, and publishing house Penguin, and is now focused on being an educational resource and testing provider.

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.