Reflexology charts show the location of reflex points on your feet, hands and ears. There are so many and different types of charts: Reflective, Acupuncture, Ayurveda or Indian, Spiritual and Artistic. Some charts are based on the practitioner and their experience in the field.
In my practice I follow the chart related to my certification and provided by my professor very similar to the chart below:
I also found this Foot Chart online very interesting and easy to understand.
No matter which chart you choose always Reflexology will produce a positive and effective result since you follow the guidelines and perform the technique correctly.