The app has been updated and is now bundled with the English version here: https://play.google.com/store/apps/details?id=com.nchsoftware.pocketwavepad&hl=en
WavePad is a professional sound editor for recording, editing, adding effects and sending audio. With WavePad you can record voice or music, edit the recording and add effects to achieve high quality audio recordings. Work with audio waveforms to make selections for quick editing, such as: Such as inserting recordings from other files, or applying effects such as the high pass filter to clarify the audio quality. WavePad allows journalists and other recording professionals on the go to easily store or send recordings so they are available anytime, anywhere. • Supports a range of file formats, including Wave and Aiff • Editing features include cut, copy, paste, trim and more • Effects include amplify, normalize, echo and more • Work with multiple files • Supports autotrim and voice-activated recording • Select You can sample rates from 8000-44100 Hz, 8-32 bit • Recording runs in the background and when the screen turns off • Upload to and download from your Google Drive and Dropbox accounts