A WAV recording is large by design, which is fine for editing and painful for sending or syncing across devices. Filemorph compresses it to M4A on your iPhone, no upload required.
WAV stores every sample uncompressed, so a few minutes of stereo audio can run into the hundreds of megabytes. Once editing is done and it is time to archive, sync or share the recording, M4A gets the file down to a fraction of the size at a bitrate most ears cannot distinguish from the original.
Filemorph reads the WAV's PCM audio and encodes it to AAC using Apple's AVFoundation, writing the result into an M4A container. The compression is lossy, so this is a one-way trip — keep the WAV if you might need to edit the recording again later.
In the app: Transcode (Output Format: M4A).
A finished recording rarely needs to stay uncompressed once editing is done, and a smaller M4A is faster to send, easier to sync across iCloud and lighter on storage. Keeping the WAV around only as the master copy, and sharing M4A everywhere else, is the usual split.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This operation is part of Filemorph Pro ($29.99/year, 7-day free trial on monthly and annual plans).
Typically 80 to 90% smaller, depending on the bitrate. A WAV recording that runs a few hundred megabytes often ends up under thirty as M4A.
No, this converts to M4A, Apple's own compressed format. Transcode can also write MP3 at 128 to 320 kbps if a player or app needs that instead.
No, audio Transcode is part of Filemorph Pro ($29.99 a year, 7-day free trial on monthly and annual plans).
On-device, no upload. Plus 300+ more file operations.
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