Learning English with Apps- Tip Sheets

Here are some free apps to explore. They are roughly grouped by skill. However, most skills overlap. Many of these are available for both Android and Apple, so check both tip sheets. Paid upgrades are often available.
 

What are apps?
Apps are applications, or small pieces of software, that run on a mobile phone, computer, or other electronic device. They can be downloaded from the App Store onto a cellphone or tablet, and many of them are free of charge.