I designed this assessment for my students in Pre-AP and AP level Spanish. After developing their apps, they had to illustrate them in at least 3 different states for my reference during grading of their speaking.
They did very well, the 20 second time provided for speaking didn't seem to be long enough for many of them, but it is good practice for the AP exam.
Included is a description of the assessment, background information for the developer that they are pitching to, as well as a grading rubric that I used. Your curriculum goals may be different, so you may need to change the 100 point rubric.
A link to the audio is provided on the purchase version of the assessment. I am not a native speaker, so if having such audio for this assessment is important to you, please be advised that you may easily rerecord the audio to meet the needs and skill level of your students.