Audio Converter & Trimmer

Turn a local recording or music file into a separate audio clip. Choose a file, set its start and end, preview the selection, then convert and save a new output.

Convert to MP3, AAC in M4A, or PCM16 WAV. Individual file conversions are free. An optional one-time Pro purchase unlocks batch exports and saved recipes in this app. No subscription, ads or mandatory app account.

Conversion runs on your device. Select files and an output folder through Android's picker. The app reads the original and creates a new file. It does not upload your audio to the publisher. A cloud-backed storage provider you select may download or sync files under its own settings.

Input support depends on your device's decoder. Supported inputs are mono or stereo MP3, AAC/M4A, PCM16 WAV and FLAC. Unprotected MP4 video can be used when it contains exactly one supported audio track. Protected files, multiple audio tracks and unsupported multichannel audio are refused.

The source sample rate and channel count are retained when supported by the selected output encoder. M4A output requires a source rate of at least 32 kHz. MP3 output is limited to 128 kbps below 32 kHz and 64 kbps below 16 kHz. WAV remains available for supported mono or stereo PCM audio. Source tags and artwork are not copied. Android inputs are limited to 8 GB and 24 hours, with enough temporary device storage for the source and new output. Later clips may take longer because decoding starts at the beginning of the source. Android 11 or later is required.

Google Play handles Pro purchases and restoration. The app includes the complete LAME encoder source, licenses and rebuild instructions in its legal screen.