Nintendo Switch Parental Controls is a free app developed by Nintendo Co. Ltd. for iPhone users. It is a useful tool for parents who want to monitor and control their child's gaming activities on the Nintendo Switch console. The app requires an internet connection and a Nintendo account for users aged 18 and above.

The app offers three main features. Firstly, parents can monitor the playtime on the console by setting a playtime limit. The console will notify the user when the time limit has been reached. Secondly, parents can check the games played on the console and the time spent playing each day using the summary function. Finally, the app offers the ability to restrict certain console features, such as playing games above a certain age rating.

It is an excellent app for parents who are concerned about their child's gaming activities. However, it is important to note that all registered Nintendo Switch consoles need to be using the latest system version to make use of all the features and settings available in the app.