VoxMetria is a Home & Education software developed by CTS Informᴩca. After our trial and test, the software is proved to be official, secure and free. Here is the official description for VoxMetria:

EditByMarydown: VoxMetria software is designed for Speech-Language Pathologists to analyze speech and voice. It includes a variety of functions and parameters allowing the clinician to record, analyze and play speech samples. Two special features called Comparison and Follow-up enable clinical results to be viewed by selecting past sessions and other voice models for comparison in multiple displays, helping clinician and patient during the evaluation and treatment Processes.
Features:
- Easy to use
- Fast, dynamic and PRECISE Acoustic Analysis.
- Powerful Educational Resource for the clinician and the patient.
- Clear intelligible graphs.
- Ability to see side-by-side comparisons.
- Phonatory deviation graphs showing voice deviation.