Since I am curious but lazy enough to search for the description of each one of these apps, I made an experiment. I asked GPT-4 to generate a description for them. I provided the context below:

This is a list of FOSS Android apps. I need you to briefly explain in one line what each one of these does.
You should use the knowledge you already have, but on doubt query the https://f-droid.org/

[I included OP full list here]

I tried twice. In the first one I not included the f-droid context above, and the list he generated have some misleading descriptions. The second try I passed the full prompt above, and the resulting descriptions was better.

Interestingly, GPT-4 alerts when he search the internet, but in this second try he did not accessed it, but the resulting list was better anyway, although not perfect:

• Aegis: A secure and open-source 2FA (two-factor authentication) app for managing OTPs (One Time Passwords).
• App Lounge: An alternative app store for Android, focusing on privacy and security.
• AntennaPod: A podcast manager and player that lets you subscribe, download, and listen to podcasts.
• Bitwarden: An open-source password manager for securely storing and managing passwords.
• Dicio: A dictionary and thesaurus app, useful for word definitions and synonyms (specific functionality may vary).
• Doodle: A scheduling tool for finding the best date and time for a group of people to meet (if referring to the Doodle Android app).
• F-Droid: An app store for free and open-source Android apps.
• FeedMe: (Not FOSS) A feature-rich RSS reader.
• Firefox: A well-known open-source web browser focused on privacy and customization.
• FNG: Likely refers to "Fluid Navigation Gestures," an app for implementing gesture-based navigation.
• InvizBox: Could refer to an app associated with the InvizBox hardware for secure and private internet access (specific app details may vary).
• Jerboa: A Mastodon client with a focus on accessibility and ease of use.
• Mastodon: An open-source social network platform, often used through various client apps.
• Music Player GO: A straightforward, lightweight, and open-source music player.
• Obsidian: A powerful note-taking and knowledge management app (if referring to the mobile version of Obsidian).
• OpenLauncher: An open-source, customizable, and minimalistic Android launcher.
• Organic Maps: An offline maps app focusing on hiking, biking, and general travel, using OpenStreetMap data.
• OsmAnd~: A map and navigation app that uses OpenStreetMap data, offering offline use and various features for travelers.
• Proton Cal/Drive/Mail/VPN: A suite of privacy-focused services including calendar, cloud storage, email, and VPN from Proton.
• RadioDroid: An app for streaming internet radio stations.
• RedReader: An open-source Reddit client for browsing and interacting with Reddit content.
• Signal: A privacy-focused messaging app known for its end-to-end encryption.
• Silence: An SMS/MMS app that encrypts messages for privacy and security.
• Simple Keyboard: A minimalistic keyboard focusing on simplicity and basic functionality.
• Tasks: An open-source task management app, known for its simplicity and integration with Google Tasks.
• Unit Converter Ultimate: A comprehensive tool for converting between various units of measurement.
• Wikipedia: The official app for accessing Wikipedia, the free online encyclopedia.