Comparison

Degenson vs Callback Freeverb

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Degenson

Create distorted percussion, hypnotic sequences, and aggressive sounds with this raw virtual analog drum machine. It offers six voices, dual LFOs, and fast hands-on control for electronic music production.

Highlights
  • Virtual analog drum machine
  • Distorted percussion
  • Hypnotic sequences
  • Aggressive sound design
  • Six voices
  • Dual LFOs
  • Hands-on control
Features
Read full description

Degenson is a raw virtual analog drum machine built for distorted percussion, hypnotic sequences and aggressive sound design. Six voices, dual LFOs and fast hands-on control for techno, EBM and experimental production. Now it's also an AUv3 plugin: run Degenson inside your favorite iOS host — GarageBand, AUM, Cubasis, Drambo and more — perfectly in sync with your project tempo. • Six punchy virtual-analog voices with analogue-style decay — percussive across most of the knob, opening into an infinite drone at the top • Full MIDI: notes trigger the voices, every knob responds to a fixed MIDI CC, and the sequencer can be bypassed to play live from any controller • Melodic mode: each octave maps the six voices and transposes them, so you can play the drums tuned across the keyboard • Fast, tactile step sequencer with per-step control and dual LFOs for evolving, hypnotic patterns • Crunch Verb: a gritty master reverb with Mix, Decay and Crunch — the tail degrades as it fades Free to play. The optional Pro upgrade unlocks the AUv3 plugin for use in your DAW and WAV export for bouncing your patterns.

About

Callback Freeverb

This app offers a classic algorithmic reverb effect based on the Freeverb algorithm. It adds depth, space, and atmosphere to audio sources, creating lush, spacious ambience. Designed for mono use, it provides a smooth, musical reverb tail suitable for vocals and synthesizers.

Highlights
  • Classic Freeverb algorithm
  • Schroeder/Moorer reverb topology
  • Comb and allpass filters
  • Mono operation
  • Adds depth and space to audio
  • Smooth, musical reverb tail
Features
Read full description

A classic algorithmic reverb effect based on the Freeverb algorithm by Jezar at Dreampoint. A Freeverb-style Schroeder/Moorer reverb based on the classic 8-comb + 4-allpass topology, with simplified controls and no stereo spread. This reverb creates lush, spacious ambience through a network of comb and allpass filters. Freeverb is widely used in electronic music production, ambient music, and sound design to add depth, space, and atmosphere to audio sources. The algorithm provides a smooth, musical reverb tail that works well on everything from vocals to synthesizers. This reverb only functions in mono and provides no stereo imaging, and the user can expect the same behavior as a classic Freeverb implementation otherwise.

Screenshots

Degenson3 screens
Callback Freeverb4 screens

Verdict

The call

The clearest difference is in-app purchases: Callback Freeverb at none against Degenson's 1. Degenson's advantage is ratings volume (8 vs 1) and iOS requirement (15.0 vs 17.0). On price, rating, ads and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Degenson sells 1 one-off in-app purchase. Callback Freeverb asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Degenson against 5.0 for Callback Freeverb. That said, the two scores are not equally well evidenced: Degenson has 8 ratings behind it against 1, so its average is the more settled of the two.

Scorecard3 real differences · 7 level
Degenson versus Callback Freeverb: the parameters behind the verdict, then further details
ParameterDegensonCallback Freeverb
PriceFreeFree
Rating5.0 (8 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings8 — better1
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size17 MB7 MB
Age rating4+4+
DeveloperFabrizio AlvitiCallback Audio, LLC

Customer experience

Degenson

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Callback Freeverb

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Degenson

One-time1
  • Degenson Pro Upgrade$7.99
None

Callback Freeverb

No in-app purchases

Questions

Is Degenson free?
Degenson is free to download, with in-app purchases available.
Is Callback Freeverb free?
Callback Freeverb is free to download, with no in-app purchases.
Which has better reviews, Degenson or Callback Freeverb?
Degenson and Callback Freeverb are both rated 5.0 out of 5 on the App Store, from 8 and 1 ratings respectively.
Do Degenson or Callback Freeverb have ads?
Neither Degenson nor Callback Freeverb shows ads.

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