Snap's earnings sent its stock up more than 20 percent, but user growth remains a real concern

Snapchat needs help from a new Android app that's still MIA. Snap finally had a good day. You might even call it a great day. That's because, after a tough year in which Snap execs and investors watched the company's stock price slowly bleed out because of government investigations, executive departures, and product issues, Snap reported better-than-expected earnings on Tuesday that shot the stock up more than 22 percent in after-hours trading. The main reason: Snap's business last quarter was s...