Segundamano.es - One of the largest marketplaces in Spain, Vibbo also has an Android version that lets you buy and sell secondhand articles just like on the standard website.
On this app you'll find millions of listings classified into different categories, among which the ones that stand out are real estate, automobile, professional development, work and services; all of which are then divided into subcategories.
If you want to sell any article, this tool gives you a full page where you can put your own ad with a description, photos of the item, location, and final price. Any user interested in your product can write or call you directly to handle the purchase in more personal way.
If you're interested in another vendor's item, you can mark it as a favorite to receive alerts that let you know of any changes to the ad or if it gets purchased. Furthermore, to avoid scams, the company itself has created a security guide you can consult to avoid getting tricked by false ads, as well as a special section for you to report ads you think might not be trustworthy.