LinuxQuestions.org - List of Android apps I recommend

List of Android apps I recommend

(at the end of document, the list with URL/links added, towards the specified application store)

[*] maps.me (playstore), organicmaps (playstore, fdroid) : offline navigation/maps, uses OSM, instead of google.
[*] aurora-store (fdroid): alternative app/client of playstore
[*] fdroid (via fdroid.org) : alternative application store to the playstore, containing various opensource apps, mainly non-playstore-available apps.
[*] cachecleaner (fdroid) : permits to wipe/remove/erase cache of all android's apps in one time (not data, only cache) via automatism ; takes 10 to 15 mins, for hundred apps.
[*] carnet (playstore, fdroid): notepad app with two nice features : PIN access code lock, backup/sync via webdav/nextcloud
[*] conversations/quicksy (playstore, fdroid) : secured messenging app (xmpp client) for android, uncentralized, federated. Conversations requires a/several account (like for email client), instead of quicksy, using only and directly user's phone number) ; both made by same dev.
[*] davx (playstore, fdroid): add caldav calendars to android
[*] elements (playstore, fdroid): matrix secured messenging client
[*] fairemail (playstore, fdroid) : free email client (via fdroid)
[*] feeder (playstore, fdroid): reader/agregator of RSS feeds, to unify all incoming news from various medias, to a single place
[*] fennec (fdroid) : firefox's fork, available on fdroid
[*] simple file manager pro (fdroid) : file explorer
[*] foldersync (playstore) : allow to do synchronization to/from different cloud/storage places
[*] simple gallery pro (fdroid): photos/pictures gallery viewer
[*] gpstest (playstore): allow to check the compatibility of the device with different GNSS (global navigation satellite system), eg galileo (european's one) or others : GPS, GLONASS, GALILEO, SBAS, BEIDOU and QZSS
[*] k9mail (playstore, fdroid): email client
[*] koreader, mupdfviewer, liberiafd, bookreader (few on playstore, all:fdroid): pdf reader, epub viewers..
[*] libretube, skytube, newpipe (meilleur), pipepipe (tous:fdroid): alternative youtube's clients, to avoid advertising/advertisement.
[*] linphone (playstore,fdroid): sip client, permits to communicate for free/unlimited through the internet, with others sip users : messages, video, audio. french initiative.
[*] lower brightness (playstore) : customize/low brightness, beyond android's system limits
[*] muzei (playstore, addons via fdroid): alternative to the wallpapers google's app ; a new wallpaper per day, regarding wallpaper's
source (fdroid) : national geographic, etc)
[*] nextcloud (playstore, fdroid): sync client app for nextcoud usage & server
[*] notally (fdroid): alternative notepad app
[*] opentracks (fdroid): GPS tracker focused on privacy (bike, etc..)
[*] pilldroid (fdroid): identifie medicine/pills products, regarding barcode (only for FR-listed medicine registred products)
[*] qksms (playstore,fdroid): alternative SMS management app, allows backups.
[*] redmoon (fdroid): creates a red/orange screen filter, to diminue impact of blue light.
[*] stellarium (playstore) : opensource planetarium, beloved by space amateurs. Free and premium versions
[*] VLC : multimedia player (playstore, fdroid)
[*] Yet Another Call Blocker (fdroid): allow to block unsollicited incoming calls, either using a community list/source (signaled from internet users), or by single, or several/range of phone numbers blocking system

All fdroid application are generally free and opensource, no payment will be asked (normally) ; a warning is shown on every app requiring some specific/sensitive data (geolocation, phone number..)

[*] proton services (https://proton.me), mail, vpn, drive (commercial organization) are not included, even if they have good, or less good, practical features.[*] various alternative/third-app messenging apps are not listed, they are too many (session, briar, dib2qm, tox, simplex, deltachat, trifa, and many others) see :
https://forum.xda-developers.com/t/o...-apps.4612087/

first list, with URL/Links :
[*] maps.me (playstore), organicmaps (playstore, fdroid) : offline navigation/maps, uses OSM, instead of google.
https://play.google.com/store/apps/d...ithme.maps.pro
https://play.google.com/store/apps/d...pp.organicmaps
https://f-droid.org/fr/packages/app.organicmaps
[*] aurora-store (fdroid): alternative app/client of playstore
https://f-droid.org/packages/com.aurora.store/
[*] fdroid (via fdroid.org) : alternative application store to the playstore, containing various opensource apps, mainly non-playstore-available apps.
https://fdroid.org
[*] cachecleaner (fdroid) : permits to wipe/remove/erase cache of all android's apps in one time (not data, only cache) via automatism ; takes 10 to 15 mins, for hundred apps.
https://f-droid.org/fr/packages/com....ppcachecleaner
[*] carnet (playstore, fdroid): notepad app with two nice features : PIN access code lock, backup/sync via webdav/nextcloud
https://play.google.com/store/apps/d...soft.quicknote
https://f-droid.org/fr/packages/com.spisoft.quicknote
[*] conversations/quicksy (playstore, fdroid) : secured messenging app (xmpp client) for android, uncentralized, federated. Conversations requires a/several account (like for email client), instead of quicksy, using only and directly user's phone number) ; both made by same dev.
https://play.google.com/store/apps/d....conversations
https://f-droid.org/fr/packages/eu.siacs.conversations
https://play.google.com/store/apps/d...quicksy.client
https://f-droid.org/fr/packages/im.quicksy.client
[*] davx (playstore, fdroid): add caldav calendars to android
https://play.google.com/store/apps/d...tfire.davdroid
https://f-droid.org/fr/packages/at.bitfire.davdroid
[*] elements (playstore, fdroid): matrix secured messenging client
https://play.google.com/store/apps/d...=im.vector.app
https://f-droid.org/fr/packages/im.vector.app
[*] fairemail (playstore, fdroid) : free email client (via fdroid)
https://play.google.com/store/apps/d...faircode.email
https://f-droid.org/fr/packages/eu.faircode.email
[*] feeder (playstore, fdroid): reader/agregator of RSS feeds, to unify all incoming news from various medias, to a single place
https://play.google.com/store/apps/d...ps.feeder.play
https://f-droid.org/fr/packages/com....nseapps.feeder
[*] fennec (fdroid) : firefox's fork, available on fdroid
https://f-droid.org/packages/org.mozilla.fennec_fdroid/
[*] simple file manager pro (fdroid) : file explorer
https://f-droid.org/fr/packages/com....ilemanager.pro
[*] foldersync (playstore) : allow to do synchronization to/from different cloud/storage places
https://play.google.com/store/apps/d...oldersync.lite
[*] simple gallery pro (fdroid): photos/pictures gallery viewer
https://f-droid.org/fr/packages/com....ls.gallery.pro
[*] gpstest (playstore): allow to check the compatibility of the device with different GNSS (global navigation satellite system), eg galileo (european's one) or others : GPS, GLONASS, GALILEO, SBAS, BEIDOU and QZSS
https://play.google.com/store/apps/d...ndroid.gpstest
https://f-droid.org/fr/packages/com....stest.osmdroid
[*] k9mail (playstore, fdroid): email client
https://play.google.com/store/apps/d...id=com.fsck.k9
https://f-droid.org/fr/packages/com.fsck.k9
[*] koreader, mupdfviewer, liberiafd, bookreader (few on playstore, all:fdroid): pdf reader, epub viewers..
koreader : https://f-droid.org/fr/packages/org....auncher.fdroid
mupdfviewer: https://play.google.com/store/apps/d...pdf.viewer.app
mupdfviewer: https://f-droid.org/fr/packages/com....pdf.viewer.app
librera : https://play.google.com/store/apps/d...nix.pdf.reader
librera : https://f-droid.org/fr/packages/com....pro.pdf.reader
bookreader : https://play.google.com/store/apps/d...xet.bookreader
bookreader : https://f-droid.org/fr/packages/com....xet.bookreader
[*] libretube, skytube, newpipe (meilleur), pipepipe (tous:fdroid): alternative youtube's clients, to avoid advertising/advertisement.
libretube : https://f-droid.org/en/packages/com.github.libretube/
skytube : https://f-droid.org/fr/packages/free.rm.skytube.oss
newpipe : https://f-droid.org/packages/org.schabi.newpipe/
pipepipe : https://f-droid.org/packages/org.schabi.newpipe/

[*] linphone (playstore,fdroid): sip client, permits to communicate for free/unlimited through the internet, with others sip users : messages, video, audio. french initiative.
https://play.google.com/store/apps/d...d=org.linphone
https://f-droid.org/fr/packages/org.linphone
[*] lower brightness (playstore) : customize/low brightness, beyond android's system limits
https://play.google.com/store/apps/d...wer.brightness
https://f-droid.org/fr/packages/giraffine.dimmer/
[*] muzei (playstore, addons via fdroid): alternative to the wallpapers google's app ; a new wallpaper per day, regarding wallpaper's source (fdroid) : national geographic, etc)
https://play.google.com/store/apps/d...ik.roman.muzei
https://f-droid.org/fr/packages/de.m...nalgeographic/
[*] nextcloud (playstore, fdroid): sync client app for nextcoud usage & server
https://play.google.com/store/apps/d...xtcloud.client
https://f-droid.org/fr/packages/com.nextcloud.client
[*] notally (fdroid): alternative notepad app
https://play.google.com/store/apps/d...mgodse.notally
https://f-droid.org/fr/packages/com.omgodse.notally
[*] opentracks (fdroid): GPS tracker focused on privacy (bike, etc..)
https://f-droid.org/fr/packages/de.d...use.opentracks
[*] pilldroid (fdroid): identifie medicine/pills products, regarding barcode (only for FR-listed medicine registred products)
https://f-droid.org/fr/packages/net.foucry.pilldroid
[*] qksms (playstore,fdroid): alternative SMS management app, allows backups.
https://play.google.com/store/apps/d...com.moez.QKSMS
https://f-droid.org/fr/packages/com.moez.QKSMS
[*] redmoon (fdroid): creates a red/orange screen filter, to diminue impact of blue light.
https://f-droid.org/fr/packages/com.jmstudios.redmoon/
[*] stellarium (playstore) : opensource planetarium, beloved by space amateurs. Free and premium versions
https://play.google.com/store/apps/d...tellarium_free
[*] VLC : multimedia player (playstore, fdroid)
https://play.google.com/store/apps/d...g.videolan.vlc
https://f-droid.org/fr/packages/org.videolan.vlc
[*] Yet Another Call Blocker (fdroid): allow to block unsollicited incoming calls, either using a community list/source (signaled from internet users), or by single, or several/range of phone numbers blocking system
https://f-droid.org/en/packages/dumm...ercallblocker/