The best alternatives to Wikiverse are Wikifox, Wikipedia, and Endless. If these 3 options don't work for you, we've listed a few more alternatives below.
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Wikifox (beta) is a clean and simplified version of the real Wikipedia! This works with official Wikipedia, so nothing to worry about!. It has a good and clean user interface with Dark, Light and custom themes! Check it out : https://wikifox.ml/
MiniWiki is the best way to browse Wikipedia™ on your Apple Watch with ease. If you want to search across over 40 million articles, download articles for offline reading, or find out all about your surroundings with nearby articles, MiniWiki has you covered!