App ideas

This page collects ideas for small useful apps that a relative newcomer to KDE could write without much trouble.

PDF slicer/joiner/file size reducer
Video file format converter/file size reducer/cropper/trimmer
Audio file format converter/volume equalizer
Webtoons client
Spotify client
Maps app, maybe porting Organic Maps to Kirigami?
Discourse reader client
App that allows to add Alt Text and Captions to images with exiv2
QR code generator using Prison
Pairwise comparison-based favorite rank generator like Rank My Favs
LRC lyrics finder using something like lrclib
Ebook browser and downloader for Project Gutenberg
Qt interface for playing Simon Tatham's Portable Puzzle Collection
A mobile app to practice learning music sheet notation like Musical Notes or Learn Music Notes