TB Reverb 4+

Studio-grade reverb plug-in


    • 4.7 • 49 Ratings
    • $8.99



ToneBoosters Reverb is a studio-quality, professional reverberation AUv3 / IAA plug-in with an unrivalled workflow, unlimited creative use and a gorgeous, functional user interface.

With its close to a hundred adjustable parameters, the integrated LFO for parameter modulation, integrated compression and gating, and its shimmer reverb module it is by far the most flexible and configurable reverb on iOS.

The ToneBoosters Reverb app captures the microphone input and processes the signals in real time. To use it as a plug-in, use an AUv3-compatible host app such as Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others. ToneBoosters Reverb will appear in the list of Audio Unit extensions for effect plug-ins.

Key features:

- Studio-grade reverberation including early reflections
- The same professional sound as the acclaimed desktop version
- Full control over room size, width, density, depth, mass
- Integrated spectrum analyser showing direct and reverb simultaneously
- Integrated equalizer to shape the reverberation character
- Ability to modify reverberation time across frequency
- Compression, ducking and gating for dynamic reverberation effects
- Flexible, beat-synced LFO that can modulate almost everything!
- Dual pitch-shift shimmer module for out-of-this-world reverberation
- Reverb freeze option
- Random parameter option to change the core reverb sound on the spot
- Eco mode for lower CPU load on complex projects
- Program manager with shared programs between stand-alone, IAA and AUv3 instances
- Undo/redo, and A/B comparison
- Color themes for the user interface
- Max screen support in Garageband
- Legacy Inter-App Audio (IAA) support
- Optimised for iPad and compatible with iPhone and iPod Touch


Please note that given the large flexibility and number of parameters that can be modified with this reverb, the use of an Apple pencil or stylus is highly recommended for smaller devices such as iPhone and iPod touch.

What you should know:
- Inter-App Audio (IAA) can only use one instance of this app simultaneously. We recommend to use an AUv3 host to use multiple instances.
- Licenses acquired for this platform are not compatible with other platforms.
- Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.

How to use this app as AUv3 plug-in in Apple Garageband for iOS:

How to use this app as AUv3 plug-in in Steinberg Cubasis for iOS:

How to use this app as AUv3 plug-in in Audio Evolution Mobile Studio for iOS:

How to use this app as AUv3 plug-in in AUM - Audio mixer:

What’s New

Version 4.7.0

UI, UX and efficiency improvements
Harmonize version numbers with macOS versions

Ratings and Reviews

4.7 out of 5
49 Ratings

49 Ratings

Johne154 ,

Updating my review to 5 stars, to what it deserves!

I previously only gave this app 3 stars, based solely on its presets. I expected the presets to present the very best this reverb has to offer and was surprised at how mild the reverb was in the presets.

This reverb provides a lot of control to add some fantastic reverb to your source music. My rush to judgement was unfair. I’m back to make amends to the developer and those considering this reverb. In fact, don’t consider it, just buy it! You won’t be disappointed.

So, Apple and/or ToneBoosters, you can remove/delete my previous review with my apologies.

Music-311 ,

More than a worthy competitor to FabFilter.

Since my purchase, I have been truly impressed with this reverb plugin. At first, considering all of the extras (eq, lfo, shimmer etc..), I did not think this plugin would really stand up to the competition. Not only did it demonstrate that the additional features are way more than hastily contrived add-ones, but the reverb portion is so easy to use and get a beautiful sound very quickly, which is so important. All of this, along with an amazingly low price gives the buyer a truly great value. Thank you very much.

Developer Response ,

Thanks much for your review! These kinds of responses keep us going to improve our apps! :-)

jhub908 ,

Great reverb - had to restart device

Just purchased it thinking I’d get audio unit compatibility since it’s listed, but it doesn’t show up in my iPad Pro or iPhone 12 Pro as an AUV3 in AUM or Drambo....seems to still have a bug even though version history suggested it was gone. Sounds great but need bug fixed, then it will be 5 stars.

Edit: A reboot of my device made it show up, never had that problem before with any other music apps but it works now - changed review.

Developer Response ,

Thanks for your feedback!

App Privacy

The developer, ToneBoosters, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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