Waldo for Android - No-code mobile testing that works
Google Analytics by SumoMe - The easiest way to see your Google Analytics
SeedLegals - SeedLegals takes care of the legals around creating, running, funding and selling startups.
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
Aaply - Big Lego mobile design constructor for apps
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.