Akiba Mkononi by UBA and airtel.A game changer?

Came across this akiba mkononi in the news I believe it could change the banking industry particularly the spreads enjoyed by banks to the disadvantage of savers.Please note that even a deposit of 50Kes will earn 7% at current rates.This is different from the likes of faulu and Mshwari who have a graduated arrangement that disadvantages those with small deposits.
I think they should go all out in their marketing(for example by explaining that your deposit will earn you 3.5times or 350% more interest than with competitor Mshwari ) and not just concentrate on low income earners, I bet you not very many banks even those used by the rich give such on their savings accounts!

No you get 875 (50,000*7%)/4,which I think you should also earn you interest in the following quarter.Because the rate is per year.Please note I haven't looked at the fine print,there isn't any available online from both UBA's and airtel's websites.