The only option
Very few resources to learn Krio on the App Store. This isn’t perfect, but it’s a great tool and completely free.
Krio User Reviews
Is Krio Safe?
Not enough ratings yet to assess Krio.
Is Krio Legit?
Krio-English Dictionary appears to be a legitimate app. AppsHunter Legitimacy Score for Krio is 80/100.
Based on 80 of 100 points across 7 verification signals from App Store and developer data.