Notification Popup is a free Android app developed by Argon Dev that provides a convenient popup dialog for receiving notifications. This app is useful for those who miss notifications or want to save them for future reference. The app is easy to use with an elegant and customizable popup window. It also has a blacklist feature that enables users to ignore notifications containing particular texts or keywords. The app has the ability to share and copy notification text and provides a notification preview with full notification summary. Text-to-speech functionality is also available to read the notification text aloud.

This app is compatible with Android devices and does not require root access. It is also worth noting that this version saves the last 100 notifications received. However, users should be aware that if the Text-to-speech service does not function, an internet connection may be required.

Overall, Notification Popup is a useful app that provides a simple solution to missed notifications. The free version is ad-supported, but a premium version is available for a one-time purchase. The premium version offers more than three services, future advanced updates, and no ads.