The Words app is based on the mathematical model of forgetting curve and spaced repetition. It is designed to learn language vocabulary, phrases and grammar rules for more than 70 languages:
- Afrikaans
- Albanian           
- Arabic
- Armenian           
- Azerbaijani
- Basque             
- Belarusian                 
- Bengali
- Bosnian                     
- Bulgarian                  
- Catalan            
- Cebuano
- Chinese Simplified
- Chinese Traditional
- Croatian                    
- Czech               
- Danish             
- Dutch              
- English
- Esperanto
- Estonian
- Filipino (Taglog)
- Finnish
- French             
- Galician           
- Georgian
- German                      
- Greek                       
- Gujarati                   
- Haitian Creole      
- Hebrew             
- Hindi              
- Hmong
- Hungarian
- Icelandic                   
- Indonesian
- Irish              
- Italian            
- Japanese
- Javanese
- Kannada                    
- Khmer
- Korean
- Lao
- Latin                       
- Latvian            
- Lithuanian         
- Macedonian                  
- Malay
- Maltese            
- Marathi                    
- Norwegian          
- Persian
- Polish              
- Portuguese         
- Romanian                    
- Russian                     
- Serbian                     
- Slovak   
- Slovenian                  
- Spanish            
- Swahili                     
- Swedish            
- Tamil
- Telugu                     
- Thai
- Turkish
- Ukrainian                  
- Urdu               
- Vietnamese
- Welsh              
- Yiddish