The best performing stock on the ASX was family-tracking app Life360, which jumped 11.7 per cent to $6.47 after saying it achieved adjusted profitability a quarter earlier than expected. Life360 also said its first-quarter revenue rose 34 per cent to $US68.1 million from the year-earlier period. Another performer was James Hardie, which firmed 8.3 per cent to $36.80 after reporting a 12 per cent increase in net profit for the year ended March 31. The building products company said it would deliver solid profits by winning market share and bolstering profit margins. Beleaguered data services company Appen announced a $60…