No. Vegan is a lifestyle, not a diet. The term "vegan" has clear definitions and guidelines in regards to what is and what is not considered vegan. "Plant based" is a marketing term that has become popular in the past few years. There are no set definitions or guidelines as to what is considered plant based.
We have come across products that are labelled as plant based and still contain animal derived ingredients. Products labelled as "plant based" may also still be tested on animals, animal ingredients may still have been used in the manufacturing process and may have been prepared on the same equipment as animal products with no care taken to avoid cross contamination.
In fact, over 50% of the products in our app database that have a "plant-based" label on them are actually not vegan.