Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.

Save contacts - Save contacts app provides features through which users can select the desired data to create the backup in a variety of different formats.

Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.

SIM Contacts Manager - SIM Contacts Manager app offers features that let you insert your sim card to your mobile phone to manage, edit, add, and delete your contacts right at your fingertips.

Amplitude - Mobile analytics: come with questions, leave with answers

SMS Backup+ - Backup Android SMS, MMS and call log to Gmail / Gcal / IMAP - jberkel/sms-backup-plus