Achalgachchh is generally said to have been started in 1113 CE (Vikram Samvat 1169) by Acharya Aryarakshitsuri. It was originally associated with the name Vidhipaksh Gaccha. ( cvodjm.org)

Some Jain histories may mention slightly different dates because they are referring to the earlier reform movement or the later naming of the gacchchh. ( cvodjm.org)