Convert older, low-quality voice recordings from legacy mobile phones. Every conversion runs locally on your Mac — your AMR files are never uploaded.
macOS 14 or later · Apple silicon · Free to try
AMR is a low-bitrate format used for old phone voice recordings. MP3 is the universally supported compressed audio format. Convert older, low-quality voice recordings from legacy mobile phones.
PrivateRemix handles the AMR-to-MP3 conversion in a couple of clicks, with the result saved right next to your original file.
Unlike free online converters, PrivateRemix has no server. Your AMR files stay on your Mac — no upload, no cloud, no account.
Drag a AMR file into PrivateRemix, or pick one from your Mac.
Select MP3 from the formats PrivateRemix offers for your file.
The new MP3 appears next to the original. Nothing leaves your Mac.
The change is minimal. Both formats are compressed, and PrivateRemix converts at a high quality setting so there is no visible or audible drop for everyday use.
AMR is a legacy mobile voice format most modern apps can't open. Converting to MP3 makes old voice recordings playable anywhere.
Effectively yes. MP3 is the most widely supported audio format in the world, which is why it's the go-to for sharing.
No. PrivateRemix runs entirely on your Mac using its own processor. Your AMR files never leave the device — there is no server to upload to, and it works fully offline.
Yes. Drop in a batch of AMR files and PrivateRemix converts them all locally, saving each new MP3 next to its original.
Free to try. macOS 14 or later, Apple silicon.