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The Kastoro blog
How Kastoro works on the inside, and the science each decision rests on.
- October 6, 2026 · 19 min read
The best Goodnotes alternatives in 2026: an honest guide
Notability, Noteshelf, MyScript Notes, Apple Notes, OneNote, Samsung Notes and more, compared on price, platforms and how to leave Goodnotes. Written by the team behind Kastoro, one of the apps compared, with every claim sourced.
- September 17, 2026 · 22 min read
The science behind Kastoro's spaced repetition, and how it compares to Anki
From Ebbinghaus's curve to FSRS-6: what research supports about forgetting and remembering, how Kastoro's scheduler works inside, and where it is equal to, better or worse than Anki.