Shiken offers Free Trial, but Upsidedown does not.
The starting price of Shiken begins at $57.51/month, while pricing details for Upsidedown are unavailable.
Upsidedown offers several advantages, including Enhances reading comprehension, Helps understand scientific articles, Effective for academic papers, Breaks texts into chunks, Provides structured summaries and many more functionalities.
The cons of Upsidedown may include a No multi-language support, Limited to scientific texts, May oversimplify complex concepts, Questions quality not guaranteed. and Debugging of summaries not possible
Shiken offers several advantages, including Gamified learning experiences, Progress saved to cloud, Customizable learning sessions, Study buddies feature, Mindfulness techniques integration and many more functionalities.
The cons of Shiken may include a Inbuilt mindfulness less refined, Store lacks diversity, Note-taking tool basic, Spaced repetition system unoriginal. and Daily quotes too generic