I feel that Wikitionary is rather underappreciated. I would like to ues it as my main dictionary, but I haven’t been able to find a good app that uses it as a backend.
I’ve been using QuickDic since forever: https://f-droid.org/packages/de.reimardoeffinger.quickdic/
Aard 2 (Offline dictionary) https://f-droid.org/packages/itkach.aard2/
Been using it for about 4 months, it’s so good and FAST (without the need of searching words online).
I have the open english wordnet and the greek wiktionary for english to english and whatever-language (mainly english) to greek trasnlations when I’m reading my english books or when I want to check the spelling of a word (I use no auto-correct). :)
I don’t know if this helps, but if you use DuckDuckGo as a default search engine in your browser, its easy to look things up on Wiktionary using !wt. And yeah, Wiktionary is awesome and very underappreciated.
There is a built in tool for Android Studio to make a website into an apk you could sideload.
Or you could always use a browser to make it a Home Screen shortcut, there is usually a button for this.
F-Droid does have a Wiktionary app that is open source, it’s not currently maintained but anyone could update it by forking the code.
Probably better to use a tool that doesn’t require internet, such as QuickDic
