It turns out two taxi companies here, TM! Taksi and Tiz Taxi, are using the OSM database for both the client apps used to summon taxicabs, and for the driver's apps. The Tiz Taxi website notes in its FAQ for potential drivers, "Приложение водителя интегрировано с Яндекс.Навигатор или Waze. Используйте для определения маршрута. Мы также добавили поддержку навигатора MAPS.ME" (The driver's app is integrated with Yandex Navigator or Waze. Use for determining the route. We also added support for the MAPS.ME navigator) The Yandex and Waze maps of Ashgabat are out of date, but the MAPS.ME app uses OSM and is thus pretty much current. Interesting that OSM is finding more uses here.
The app for the 2017 Asian Indoor and Martial Arts Games also uses the OSM map of Ashgabat as its base map. I downloaded the app just now. The games start on September 17.
Yesterday we cruised the northeast corner of Gypjak to collect a few more street names. Am hoping to have most of the suburbs mapped to the degree possible before the Asian Games start.