Spar app not supported by non Google Phones

We have tried downloading the app numerous times, even by installing APK from other devises, and every time its a case of we will try again. but no hope. It seems although we are in a digital age, Spar can not provide an app for non google services. South-Africa is diverse and so is our technology, I find it poor that a Big name as Spar can not even provide an App for everyone.