Yeah, this is the biggest gripe we hear about much of the existing language learning landscape. That they're effectively gaming apps masked as language learning apps.
You should still gamify it. Gamification is orthogonal to whether the tool actually works and positively correlated with whether the user actually uses it.
You should still gamify it. Gamification is orthogonal to whether the tool actually works and positively correlated with whether the user actually uses it.