FeedbackSpark's answer
Range of powerful features designed specifically for digital product teams:
Back Market - the refurbished (super) market
Period Tracker - Period Tracker, the easiest way to track your periods!
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Eve by Glow - A savvy sex & health app for women
Google Forms - Simple web forms from Google.
FitrWoman - Exercise, nutrition & menstrual cycle tracker for woman.