Fission
Fission
2.5.0

4.3

Fission free download for Mac

Fission

2.5.0
31 October 2019

Streamlined audio editor.

Overview

Fission can crop and trim audio, paste in or join files, or just rapidly split one long file into many. It's streamlined for fast editing. Plus, it works without the quality loss caused by other editors, so you can get perfect quality audio even when editing MP3 and AAC files.

If you need to convert formats, Fission can do that too! You can rapidly export or batch convert files to the MP3, AAC, Apple Lossless, FLAC, AIFF, and WAV formats.

Key Features:
  • Edit MP3, AAC, Apple Lossless, and AIFF files with no quality loss
  • Quickly split a long audio file into smaller files
  • Remove unwanted content, such as commercials, from your audio file
  • Re-arrange audio in a single file, copy audio from one file to another, or merge with a quick drag and drop
  • Create great-sounding MP3 or AAC ringtones for your cell phone.

What's new in Fission

Version 2.5.0:
  • Full MacOS 10.15 (Catalina) Support
  • Fission now has full compatibility with MacOS 10.15 (Catalina).
  • Full Dark Mode Support
  • Fission now offers full Dark Mode support, using the Dark theme in Dark Mode, and the Light theme in Light Mode. To adjust this setting to your liking, see Fission's Preferences window.
  • Waveform Improvements
  • Several improvements have been made to waveform drawing.
  • Restored Dark Theme Functionality
  • Recent updates reduced the usefulness of Fission's Dark theme. The theme has now been updated and improved.
  • A new wizard has been added to Fission, which includes a new “Quick Tour” to provide a helpful overview of the application, as well as update notes on the first launch of a new version.

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45 Fission Reviews

See all

Rate this app:

Edeerly
15 March 2019

Most helpful

The most reliable to quickly edit MP3, Lossless, WAV and AIFF files with no quality loss.
Like (1)
Version 2.4.5
Fishboy
14 June 2019
Single waveform for stereo files? Deal breaker.
Like (1)
Version 2.4.5
Edeerly
15 March 2019
The most reliable to quickly edit MP3, Lossless, WAV and AIFF files with no quality loss.
Like (1)
Version 2.4.5
Scion777
20 December 2018
Nice app, but Audacity is free ......
Like
Version 2.4.5
1 answer(s)
TomLoredo
TomLoredo
15 January 2019
I don't believe Audacity can edit MP3 or compressed AAC audio files losslessly. Like most other audio editors, it converts such files to an uncompressed format when it opens them, and then does a lossy re-compression if you save it back to MP3 or AAC. I already have an audio editor, but I'm looking for one that can edit MP3s without the extra cycles of lossy compression. If you know of an alternative that does this, please let us know.
Like
Hydester
26 November 2018
I really appreciate simple apps which aren't full of bloatware. Fission is such an app—perfect for editing and batch converting for the non-professional (and maybe pros too!?) I'm sure there are audio editing apps with lots more features, but the simplicity of Fission is what wins my praise
Like
Version 2.4.4
Morlo
14 September 2017
nice! it's quicky and simple, but wish it had more features like adding filters and effects to repair and enhance the audio file. would be great to have audio meters too!
Like
Version 2.3.3
Funjoy
26 July 2017
Great for quick lossless audio trimming and turning snippets into iPhone ringtones too. I bought this app when it first came out in 2006, bought the v.2 update five years ago(!) and am happy to see that they are still thinking of it, supporting 32-bit files. It's an app I only need to use occasionally, but it's solid and does its job.
Like
Version 2.3.2
Sue3016
05 July 2015
Fission is one of the best apps I have ever bought! It makes editing audio easy and painless. I don't write many reviews but I do want to help spread the word.
Like
Version 2.2.4
Mcr
20 March 2015
Giving a 4 start review to make up for my erroneous bug report below. I still think it's a risky UI choice that was made, (IMO editing keys should always act on text if text is highlighted and has focus), but I was wrong in stating that both Delete keys did the same thing. I would give 5 starts if the documentation were improved (no mention made about being careful what Delete key you use when editing tags). Also, first few times I used the app, took forever to figure out how to remove a splt (not all, just a specific one...turns out you have to DOUBLE click on it, then press Delete, even though Delete is not on the right click pop menu). Ability to edit the same tag across clips at once would be nice (like set the identical author or cover art for all clips).
Like (1)
Version 2.2.2
Mcr
18 March 2015
In general I really like this product, but just discovered this nasty bug that was driving me nuts until I figured out what was happening. Attempting to delete Tag info will delete the clip how to reproduce: 1) edit a file into multiple clips, you can use the Split function to make create multiple clips (you must have multiple clips, bug doesn't manifest when there is only one clip) 2) select one of the clips so it is highlighted, make sure the Inspector window is open. 3) in the inspector window, select Tags 4) highlight the text in one of the tag fields, for example 'Title' field. There needs to be existing text in the field, if not, then type in some text first, then select some of the text. 5) Press the Delete or Backspace key; the expected behavior since the field has focus and the text is highlighted, the mouse cursor is still in the field, is that the highlighted text in the edit field will be deleted. 6) HOWEVER, pressing the Delete or Backspace at this point ends up deleting the clip you have highlighted. 7) I have found no way to delete text in a tag field without the Delete or Backspace key causing the clip to be deleted. 8) if you suggest, don't highlight the clip, that doesn't help, because you MUST highlight a clip in order for the Inspector window to allow you to edit the Tag info for that clip. the work around is highlight the text you want to change, don't press Delete or Backspace but just start typing the text you want to replace it with. Some could argue this is not a bug, but just a question of knowing how the app works, but from a UI interface perspective, the expected, dare I say 'correct' behavior, is that when you have text highlighted in a text field, and it has focus, and your text edit cursor is in that field, the Delete and Backspace key should act on the text in that field. If I click off that field so it no longer has focus, then fine. If nothing else, this is potentially a dangerous behavior, because it causes the deletion of audio data. Besides that, still really like this app.
Like
Version 2.2.2
1 answer(s)
Mcr
Mcr
20 March 2015
Folks,
My error, I was mistaken. If you have the Apple extended keyboard, with the separate numerical keypad, the inverted T arrow keys, there are two 'Delete' keys. 1) the Forward Delete which is next to the Fn and End keys in the group of 6 keys above the inverted T, and 2) the 'regular' delete or for us old timers what we call the 'Backspace' key, which is just below the CD eject key to the right of the '+/='.

The 'Forward Delete' key does delete the audio clip, even when editing a Tag field and field has focus. The 'Backspace' key does correctly delete the text. I thought I had tried both and that both deleted the audio clip, but only the Forward Delete key deletes the clip.

Having said all that, users still need to be very careful and pay attention. Old habits are hard to change and I use the Forward Delete 90% of the time because I'm just used to putting my cursor to the left of the text I want to remove by reflex. Thank you to Chris at Rogue Amoeba Support for pointing out my error.
Like (1)
ylluminate
26 October 2014
How does this stack up against TwistedWave? TW has been my goto app now for the last few years and has been amazing, but I've been curious about Fission. When I tried Fission about two years ago it just couldn't stack up against TW, but I'd love to hear an authoritative comparative review!
Like
Version 2.2.2