STRL vs DUOL Comparison

Sterling Infrastructure Inc is a construction company that specializes in heavy civil infrastructure construction and infrastructure rehabilitation as well as residential construction projects. The company operates in three reportable segments namely, Transportation Solutions, E-Infrastructure Solutions, and Building Solution. Transportation Solutions include highways, roads, bridges, airfields, ports, light rail, and others. Building Solution projects include concrete foundations for single-family homes. E-Infrastructure Solutions include the services which are provided to large, blue-chip companies in the e-commerce, data center, distribution center, and warehousing, energy, mixed-use, and multi-family sectors. The majority of the revenue is generated from E-Infrastructure Solutions.

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.