500,000 Downloads works, Internet Banking, with Emailmoni. No one smart relies on Google Play for Nigerian information. Emailmoni is in Nigeria, and in fact UBA Group directs interested people to Google Play or Apple store. Apple doesn't make data public, but many phones in Nigeria further download android apps from sources other than Google Play. A lot of phones are from Google incapable sources. So you can say that Emailmoni already is in a saturated Google android market, using UBA Internet Banking. There is then further the new and separate app.
All along, people have been noting that Emailmoni is available on multiple platforms, tailored to Nigeria. The 500,000 one is a big one. Accounts are possibly previously linked to the different devices and various sub-accounts, and those devices. For example, using a different story, anyone can post an ask at $0.0001 with millions of shares available, and see what happens. Markets are like that. What the people have, the people use. . .or wait. The share price problem is that time is running out to take advantage of the major opportunity to sell everything at $0.0001, unless it's not(?) Many posters can likely agree(?). . .unless they don't want to(?).
Anyone with a Google capable phone, the good news being, likely connects it to multiple devices. Those devices, for example for sub-accounts and those users, don't get counted as downloads, however, at Google Play store. Again Google only counts the first download on the first device.
There there is the attention-getting, on the popular Nigerian sites. Probably a rock concert was not found a proper way to go.