When you first install the software, it often allows you to trial the "Master’s Edition" for 14 days, after which it reverts to the limited free version unless purchased. WavePad Quick Review
WavePad is generally well-regarded as a powerful yet user-friendly audio editor for both Windows and Mac. WavePad Audio Editor - Apps on Google Play
You can download a completely free version of WavePad for non-commercial use directly from the Official NCH Software Site . It includes most of the standard features and never expires.
If you want to try WavePad, NCH Software offers a that is safe and functional: