English 
French 
Indonesian 
Clean Swell
Android: Phone, Tablet
iOS: iPhone, iPad
Type: Citizen Science
Species: Ocean Trash and Plastic
Wifi: App works off-line, connect to up-load data after collection
Search: 20 categories of common debris provided
Region: Worldwide
Languages: English
Price Range: Free
Recommendations:
What we liked:
After registering, you can start your clean-up action. Options given for land, underwater, and boat cleanups. List of common items provided – simply tap the icon for each item you collect. GPS tracking of mobile device can provide the location and distance covered. You can input the name of your group, the number of people involved, the weight of debris collected, and the amount of time your cleanup took. After the cleanup, you can connect to upload your data.
What could be better:
Making the app available in more languages. We would like to add “footwear” (thongs, flip-flops, sandals, tennis shoes, etc.) for the Asia-Pacific region.