mp3TrueEdit is the fastest, most accurate and easiest way to edit your MP3 and AAC audio files without losing any quality.

User Comments - Here are some unsolicited user comments about mp3TrueEdit:

Good Product "I needed a program to take the recordings of my band that I make on a Zoom H4n and cut them into individual tracks. I can drag the file into MP3TrueEdit and it pops up immediately. It is easy to find the peaks in the recording when we are actually playing music and it is simple to choose a selection of a file and save that selection. This is exactly what I needed it for! PTbass75 --- Mac App Sore (US)

Great program "Thanks, finally I've found the' MP3 / audio program, so easy to use and sound quality is un-changed afterwards..." Maaseik --- Mac App Store (Belgium)

Simple and Easy "First of all, do not expect all the bells and whistle of a dedicated wave editor, then you will love this app to do simple trimming/editing of your existing MP3 files...” Kwan Chan --- Mac App Store (Hong Kong)


With mp3TrueEdit you can easily create projects that allow you to save your work at any time. Then ‘export’ your edits without any quality loss at all!

This is because mp3TrueEdit knows about the internal format of MP3 and AAC audio files and makes all its edits without any audio quality loss or file corruptions. It doesn't need to decompress and re-compress audio in order to make any edits or view the audio so it's lightning fast, even with large audio files. Don't be caught out by other lossless MP3 editors that can use a quick and dirty method to split and join MP3 frames which often causes clicks, pops and other glitches in your audio.

It also includes an optional direct MP3 file recording function that can be enabled by downloading the free LAME encoder. Direct AAC recording is also supported.

During PLAYBACK ONLY - change tempo without affecting the pitch or change the pitch without affecting the tempo. The many uses include:
• Slow down and don't miss a word when transcribing meetings.
• Accelerate listening to audio books.
• Slow down audio when learning a new language.
• Encourage kids to read and record books and play back with 'funny' voices.
• Adjust tempo of songs when playing along with instruments.
• Change the key of songs rather than re-tune instruments.
• Re-tune karaoke or singing practice backing tracks for different vocal ranges.
• Slow down music to develop your lung capacity or speed up to practice quick wording.
• Transcribe music more easily when slowed down and/or tuned for a new instrument.
• Dance & Physical exercise: Adjust music tempo to match with your exercise level.
• Slow down playback to help improve the accuracy of editing audio.

Other key features:
• Multiple undo and redo.
• Add Effects such as fade-in and out, normalize and volume change.
• Insert silence or make sections silent.
• Fast, loads a 2 hour file in a couple of seconds.
• Works well with the Soundflower audio routing plugin.

* Currently only unprotected AAC LC mono and stereo files are supported (the most popular AAC format)

What’s New

Version 3.0.6

Fixed an issue where startup failed for some users.
Fixed an issue where sandboxing information can be lost

Ratings and Reviews

4.7 out of 5
58 Ratings

58 Ratings

TheReflex65 ,


I’ve never used audio editing software before, but I urgently needed to cut a minute of instrumental solo out of a vocal backing track prior to an audiiton. This app was very easy to use and within just a few minutes I had deleted the unwanted section of the MP3 track. When I listened to it again, I realized that there was one extra beat that I needed to remove, and was able to do exactly that. Removed just one beat! And the finished product is SEAMLESS, there isn’t any audible skip or lag. You can even slow the track down to 50% speed to allow easier editing. This app is exactly what I needed for shortening vocal audition and performance backing tracks. I am extremely happy with this app! (remember, this won’t work with DRM-protected files, so don’t expect it to edit any iTunes purchases)

Bunnyman63 ,

Good, simple alternative for podcast editing

I didn’t do a bunch of research before buying this, but needed to do some simple track edits to an MP3 file that was produced by our audio engineer. Thought about trying GarageBand, could not figure out how to get rolling. Tried mp3TrueEdit. Installed quickly, works as advertised, have not had any problems in 2+ years of using it. I do simple podcast editing with the software:

- Load an existing MP3 file
- Append files
- Select segments and delete them
- Export as a new MP3

UI is a little disorganized, but this didn’t really bother me. It tried to counsel me to store files under my Music directory to comply with Sandbox requirements, but it allowed me to ignore this advice. By default the “popup” help is enabled — which was annoying until I figured out how to turn it off.

Evatc ,

Used to edit song to 3:10, no issues

I used this to whittle down a 4 minute song to 3:10, no problems at all. works great, easy to learn, more features than most other programs i found. Id buy again.


C2 Solutions Ltd.
19.1 MB

OS X 10.11.6 or later, 64-bit processor

Age Rating
Rated 4+
© C2 Solutions Ltd.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer