Go to AppStore or Google Play and search for "andfrankly" or "&frankly" if you want to download the app or update your current version of the app. Log in with your email address, which is usually the email address you are using for work. Create and confirm your password and you're ready to get started.
You can also visit https://www.andfrankly.com/app . This should launch the app on your device automatically if installed. If not, the link will redirect you to Google Play and/or AppStore.