Yes, there are several apps available for selling watches. Here are a few popular options:

1. Chrono24: In addition to its website, Chrono24 has a mobile app that allows users to buy and sell watches from their mobile devices. The app is available for both iOS and Android.

2. WatchBox: WatchBox is a platform for buying and selling luxury watches, and it has a mobile app available for iOS and Android devices. The app offers a range of features, including the ability to receive a price quote for your watch and sell it directly to WatchBox.

3. eBay: eBay has a mobile app that allows users to buy and sell a variety of items, including watches. The app offers a range of features, including the ability to list items for sale, communicate with buyers and sellers, and track sales and shipments.

4. OfferUp: OfferUp is a mobile app that allows users to buy and sell a variety of items locally, including watches. The app offers features such as in-app messaging, the ability to negotiate prices, and a rating system for buyers and sellers.

Before using any app to sell your watch, be sure to read the terms and conditions carefully and research the app's policies on buyer protection and fees.

Ready to sell?