Based on our record, Kanka.io seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
Kanka - The free tier says it has all core features, but their tiers page implies that only paid tiers can have images on pages, which may be a dealbreaker. It also has ads. The paid tiers only give you a limited number of "boosts" that give campaigns the premium features such as no ads and more pictures, so you have to pay more and more for additional campaigns; $5/mo for 3, $10/mo for 6, and $25/mo (!!!) for... - Source: Reddit / about 1 month ago
Kanka: a (free) wiki-like website for your game/creation, you can see some exemple here. Before that I was using DMmaps + OneNote but with Kanka it's much easier and smoother. - Source: Reddit / 6 months ago
As for my notes, I use a big 9" by 12" spiral bound drawing booklet to scribble all types of notes during play. I eventually go and organize them into something more legible. I recently found Kanka.io which is a wiki designed for RPG's and I'm building out all the characters and notes into that for a database for me and the runners. - Source: Reddit / 6 months ago
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