Quant - Mental Math alternativesQuant - Mental Math is a proprietary app for iPhone and iPad. It is free to use. Developed by Nitesh Nath.AlternativesMental Math - By Mental-MathNumbioFreaking Math10 seconds of mathArithmatasticNumberDropMath Master - Brain QuizzesMath: UnknownSeqitaireMathematics+MathBraindworksheets.com