InterNations: InterNations is a social networking app that caters to expats and locals alike. It's a great platform for meeting people from different cultures and backgrounds.
Facebook Groups: While not a dedicated app for meeting friends, Facebook has numerous local groups where people connect based on shared interests or locations. You can join relevant groups and participate in discussions to meet new people in your area.
Couchsurfing: Although originally known as a platform for finding a place to stay while traveling, Couchsurfing also offers a way to meet locals and fellow travelers for social activities and friendship.
Remember to exercise caution and follow safety guidelines when meeting new people through any social app. Always meet in public places, inform someone you trust about your plans, and trust your instincts if something doesn't feel right.