Also, the app is just a business application, not a flashy consumer one. Lots of form pages, document uploads, picture capturing, etc. We do need both from the start, with a heavy number of users on Android.
iOS more prevalent in the US, but Android dominant worldwide. Android users are generally more price sensitive.
Know device landscape difference:
iOS less variation. Android broad set of manufacturers with wide ranging performance characteristics and typically wider range of network conditions (and pricing).
Etc.
Depending on your app, your initial target market, maturity of idea (mvp to test idea vs scale from the outset) and the above kind of considerations, may lead you to focus on one platform vs the other first.
If you do end up concluding you need to build for both from the start, you then have to pick between something cross platform vs the native way.
I personally think that introducing unnecessary technical complexity and unknowns and friction is not worth it if you don’t even know that your business idea has merit.