How to Make iPhone Ringtone on Mac OS?
Aimersoft iPhone Ringtone Maker for Mac can make various video and audio files as your iPhone ringtones with precise trimming and multiple output styles.
Here is a guide show you how to make iPhone ringtones on Mac:
Step 1. Load File
Load a file from your local computer or iTunes Library in the File List at the left of the interface. The file could be a MP3, WAV, WMA, M4A, AC3, etc. audio file or a WMV, MKV, TOD, MTS, TS, M2TS, etc. video file.

Step 2. Trim to Make iPhone Ringtone
Two ways are available to trim the exact part of the file as your iPhone ringtone. One is to trim by dragging and dropping the slide bar to appoint the start point and end point for your iPhone ringtone length according to the lively waveform; the other is to input the exact starting and ending time into the time-setting box to get the part you want.

Step 3. Save and Transfer the Created Ringtone
You can transfer the created ringtone into your iPhone directly with your iPhone connected by selecting the "Transfer to iPhone" item; or if you just want to save it into your iTunes, you can click the "Start" button without selecting "Transfer to iPhone"; or you can even save the created ringtone into your local computer if you wouldn't like to transfer it into your iPhone or iTunes immediately.

