Aquarium Note by dyhwang is a free Android app designed for aquarium hobbyists who keep fish, aquatic plants, or corals. This app is the ultimate companion for aquarium enthusiasts as it offers a wide range of features to manage your aquariums, livestock, and goods. With this app, you can record information about your aquarium and count days from the setup date. You can also log aquarium activities with photos and log 24 water parameters, such as pH, temperature, nitrate, salinity, and view trends with graphs.

The countdown timer feature helps measure parameters, and you can calculate expenses of aquarium and manage multiple aquariums. Additionally, you can record information about your livestock and count the days of living. You can filter the list of livestock by types, belonging aquarium, and status, and calculate expenses of livestock. You can also record information about goods and filter the list by types and belonging aquarium, and calculate expenses of goods. The app also includes a to-do list and reminder, wishlist, tank volume calculator, and data export as HTML and XML files. You can also backup and restore data, making it easier to manage your aquarium on the go.