SPECIAL MENTION: Students’ and teachers’ days of carrying heavy textbooks and binders may be numbered. Flexcil, a notetaking app available on iOS and Android, provides students, professors, and more the ability to seamlessly read, annotate, and take notes of PDF documents on their devices—a big improvement over similar apps, most of which can perform just one of these functions at a time. Selected as a featured app by Apple, Flexcil ($6.99-$8.99 for the standard version) is used by more than 4 million people worldwide. —Mariah Espada
More Must-Reads From TIME
- The Man Who Thinks He Can Live Forever
- Why We Can't Get Over the Roman Empire
- The Final Season of Netflix’s Sex Education Sends Off a Beloved Cast in Style
- How Russia Is Recruiting Cubans to Fight in Ukraine
- The Case for Mediocrity
- Paul Hollywood Answers All of Your Questions About The Great British Baking Show
- How Canada and India's Relationship Crumbled
- Want Weekly Recs on What to Watch, Read, and More? Sign Up for Worth Your Time