iNaturalist

One of the world's most popular nature apps, iNaturalist helps you identify the plants and animals around you. Get connected with a community of over 400,000 scientists and naturalists who can help you learn more about nature! What's more, by recording and sharing your observations, you'll create research quality data for scientists working to better understand and protect nature.

KEY FEATURES
• Discover species new to you both near and far
• Record your own observations and share them with the community
• Receive suggestions and crowdsourced identifications of what you've seen 
• Discuss and help others identify what they've seen
• Follow projects comprised of smaller communities and fellow citizen scientists passionate about a particular place and/or species

For more info, check out https://www.inaturalist.org