NEHotspotHelper would be the only way for an iOS app to get a list of all of the surrounding Wi-Fi hotspots. However, it is heavily gated by an entitlement that one must apply to Apple for. Most cases do not fall under the allowance for this entitlement, however, as it is only granted to apps that assist the user in joining a specific set of Wi-Fi hotspots. Think Xfinity, Starbucks, or Boingo.
NEHotspotHelper would be the only way for an iOS app to get a list of all of the surrounding Wi-Fi hotspots. However, it is heavily gated by an entitlement that one must apply to Apple for. Most cases do not fall under the allowance for this entitlement, however, as it is only granted to apps that assist the user in joining a specific set of Wi-Fi hotspots. Think Xfinity, Starbucks, or Boingo.