Mobile Phone Apps

I have Google Pixel 3a with CalyxOS and microG enabled.

Here are some apps that I have found useful that you may too.

Aegis Authenticator – used for 2 factor authentication
AntennaPod – download your favourite podcasts
Aurora Store – when you need an app from google play store
Bitwarden – password manager
Blue Wallet – bitcoin & lightning wallet
Simple Calendar – good calendar widget
DAVx5 – sync contacts and calendar with your nextcloud instance
Forecastie – weather app
Gboard – ability to swipe and type on keyboard (not open source, but the only good way to swipe and type. you can kill access to data transfer on the app so no information is sent. The open source equivalent is AnySoftKeyBoard but it's not great.)
Keybase – secure chat
OpenStreetMaps – GPS navigation
Mullvad – VPN client
ProtonMail – email client
Samourai Wallet – privacy focused bitcoin wallet
Signal – secure chat
Telegram – group discussions
Threema – secure chat
Tusky – mastodon client
WebApps – view facebook, twitter, tiktok and instagram via web