What are some alternatives?
When comparing String of Words and Between the lines, you can also consider the following products
One Clue Crossword - One Clue Crossword app allows users to access an extensive collection of more than 1000 different puzzles in order to exercise their brains on a daily basis.
Clue Word - Clue Word app offers features that let you solve a new puzzle every day by using clues to find all the answers.
CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
Crossword Puzzle Free - Crossword Puzzle Free is an app by Redstone Games that provides you with a variety of different puzzles according to various difficulty levels such as easy, medium, hard, and pro, etc.
Words in Word - Words in Word app provides features through which you can clear levels by making new words using letters of other words.
Puzzly Words - Puzzly Words app comes up with features to help you in learning new words in order to enhance the limits of your vocabulary.