Loop Habit Tracker

CopyQ

Productivity Utilities

Search, edit and reuse a local clipboard history with optional tabs and automation.

CopyQ is GPL-3.0-or-later desktop software with free official packages and no required subscription. Clipboard history is stored unencrypted by default unless its encryption feature is enabled. Built-in recognized secret markers are ignored by default, but this is not a guarantee that every application marks secrets correctly. It does not provide Paste’s iCloud/iPhone workflow or a password vault.

Keep events, recurring reminders and calendar widgets on your Android phone.

The F-Droid calendar is free and works without a Fossify account or a Fossify sync subscription. The separate paid Thank You app funds Fossify and adds customization/shared settings to supported apps. Calendar synchronization uses accounts or calendar providers already configured on the device; Fossify does not run a sync service. Those services can have their own costs. This replaces event planning, reminders and calendar views rather than every Business Calendar 2 Pro feature.

Handle calculations and common unit conversions in one Android app.

The provider describes Unitto as free, with no ads, in-app purchases or analytics. Ordinary calculations and unit conversion run locally; currency conversion needs Internet access. The GPL-3.0 source and usable F-Droid edition are available. The browser version is alpha, has limited language/theming support and loses user data on reload. This is a calculator/converter alternative for part of a WolframAlpha workflow; it does not include WolframAlpha’s knowledge database, cloud symbolic engine or every guided Pro solution. The alpha web build includes additional GPL-2.0 and MIT components with separate provider notices; the Android edition is the free app reviewed here.