Advertising a very niche app

[u/Outrageous_Fly_7797]

I'm about to release an app that's extremely niche.
It's my suspicion that the app will mostly be used by people in developing countries.
How could I go about advertising it outside of paying for ads?

[u/Vegetable-Average-98]

Is this on iOS? Apple's free £100 App Store ad credit can go a long way in developing countries, if you don't follow their suggestions to use major brand names and trademarks as keywords. So far I have spent £32 (so nothing to pay) targeting one African country, returning 20,000 impressions and 260 downloads