Maps.me is a mobile app for Android, iOS and BlackBerry that provides offline maps using OpenStreetMap data. In November 2014, it was acquired by Mail.Ru Group and became part of its My.com brand. In September 2015, the app was open sourced.
People often use Product Hunt to search for their next personal or work tool. Encourage your community to leave reviews on Product Hunt — they play a key role in helping users to discover (ooh, SEO!) and select your product.
Use website badges to encourage your community to follow you on Product Hunt. They're easy to embed on your homepage or footer, and subscribers can keep track of future product updates.