CSL vs DUOL Comparison

Carlisle Companies Inc is a holding company. The company manufactures and sells single-ply roofing products and warranted systems and accessories for the commercial building industry. The company is organized into two segments including Carlisle Construction Materials and Carlisle Weatherproofing Technologies. The company's product portfolio includes moisture protection products, protective roofing underlayments, integrated air and vapor barriers, spray polyurethane foam and coating systems, and others. The majority of the company's revenue comes from the Carlisle Construction Materials segment, and more than half of the total revenue is earned in the United States.

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.