Is there an ios version of the software as far as Lang Wei?

Yes The AppStore official website shows that the DIS8.0app of Shandong Yuanda Lang Wei Education Technology Co., Ltd. can be downloaded from ios 1 1.0 and above. Established in 1997, Shandong Yuanda Lang Wei Education Technology Co., Ltd. is located in Jinan City, Shandong Province, and is an enterprise mainly engaged in software and information technology services.