Neither Salley nor Upsidedown offers a free trial.
The starting price of Salley begins at $295/month, while pricing details for Upsidedown are unavailable.
Salley offers several advantages, including Personalized learning approach, Offers career development guidance, Neuroscience integration, No exam pressure, Flexible learning pace and many more functionalities.
The cons of Salley may include a Limited course offerings, In beta version, No quizzes or exams, Lacks curriculum structure. and No app version
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