What are some alternatives?
When comparing Battle Exchange and Frontloops, you can also consider the following products
hackattic - No nonsense, real world programming challenges
Py - Learn to code on the go 📱
Daily Coding Problem - Get exceptionally good at coding interviews
Code Fight Club - A fight club you can talk about. Less punching, more coding.
Takehome - Effective and humane coding challenges for candidates
Code Racer - Find out how fast you code