Open version 5 in browser directly:

No download needed: open directly here: Speech Articulation Trainer Web App (use Goggle Chrome Browser for best performance)

Download of version 2 and version 3:

Version 2 and version 3 are designed for PCs and laptops and can be downloaded here:
software SpeechTrainer.

In addition: audio word lists for version 2:

download here: Start.zip, Laute_isoliert.zip
For understanding how to dub and use audio word lists, see: SpeechTrainer-Handbuch.