>one of the ingenious ideas to solve social and infrastructural problems by throwing an app at them
The internet is not an app; the internet is infrastructure.
The internet is not an app; the internet is infrastructure.
If you lack basic infrastructure, you won't benefit from information. You still need to do something with that information.
And weather forecasts seem laughable idea for Africa. It's either deserts, when weather forecasts only help once in few months, or tropical climate, when you know exactly how it will be for next few months without any forecasts.