To add some context, back when Reporting Wheel was developed the target audience mainly used feature phones. Even today, we run IVR and SMS campaigns instead in lots of countries (instead of using WhatsApp/Vibe/etc or even using a mobile-friendly web app) due to the smartphone penetration still being relatively low.

(I work on Manas.Tech, the partners of InSTEDD that developed the Reporting Wheel and today run nation-scale surveys using Surveda: https://manas.tech/projects/surveda/ )