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Историческую версию Quick call for WhatsApp app можно получить на Android
Быстрый аудио звонки ваших любимых контактов в одно касание. Экономьте свое время
Helps you to make quick calls to only one favorite contact (wife, mom, husband, etc)
How it works?
1) Select your favorite contact from address book
2) Everytime you press "Quick call" icon app will call contact you select before (audio call)
If you need to change your favorite contact you should re-install application and select contact from address book again.
Hint: This app is not an official WhatsApp applications and not associated with WhatsApp Inc.