What are some alternatives?
When comparing Crossword Jam and Between the lines, you can also consider the following products
String of Words - String of Words is an app by Nickel Buddy LLC that comes up with features to help users in creating a chain of words so they can solve puzzles to boost up their skills.
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.
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.
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.
9 Letter Jumble - 9 Letter Jumble app offers features to let you learn definitions of a large number of words by solving puzzles so you can increase their vocabulary while boosting up your motor skills.