The basics of a reference list entry for a dataset:
Paris, T., Kim, J., & Davis, C. (2015). EEG responses to two contexts of AV speech presentation [Data set]. Western Sydney University. http://doi.org/10.4225/35/54bf146fa4012
The basics of a reference list entry for a mobile app:
Blub Blub. (2020). Speech blubs: Language therapy (Version 2.4.3) [Mobile App]. Google Play Store. https://play.google.com/store/apps/details?id=org.blubblub.app.speechblubs
Note: Most tests, scales or inventories will originally be published with their supporting literature, i.e. a journal article, or a manual in the format of an authored or edited book. For preference, reference this supporting literature when you wish to reference the test, (see also, Journals). Where supporting literature does not exist, the test itself can be referenced.