The search term has seen a massive surge in recent years. Several factors drive this trend:

Yabluko (Яблуко), which means "apple" in Ukrainian, is a renowned publishing house specializing in educational literature for primary and secondary school children. Unlike traditional, dense textbooks, Yabluko is famous for its vibrant, engaging, and highly visual approach to learning. Their flagship products are workbooks (зошити) for subjects like:

The average school backpack in Ukraine weighs over 5 kilograms. Switching to PDFs for core subjects like English reduces physical strain on students. A single tablet containing the Yabluko PDF plus workbooks eliminates the need to carry thick, hardcover books.

If a student needs to find a specific grammar rule (e.g., Present Perfect vs. Past Simple), manually flipping through 200 pages takes time. A allows instant keyword searches (Ctrl+F), saving precious study time.

However, there are exceptions: