Run Appium from within Android or alternatives?

Hi, I would like to put the test on the device and have the users execute that test adhoc on the device without being connected to a computer/server, so like 1 app testing another app?

Is is possible to run tests that work with Appium to instead work on an isolated android device by maybe having the appium server on the device? Or are there any alternatives to achieve this?

this has been asked in 2016 wanted to know if the situation has changed