"رواية مفتاح قلبي" is a free Android application developed by Planet Apps 66, offering a modern and compact reading experience for lovers of Arabic novels. The app is designed to provide the best quality novels to its readers, and this novel by Habiba Bakr is no exception.

The story revolves around Eileen, a woman who has lost faith in trusting others and is determined to keep her heart locked away. The app prides itself on being the best novel app on Google Play, and it offers a small application size that is easy to navigate. With a modern design and easy-to-read format, this app is perfect for those who love to read on-the-go.