Comparison

Fuzz Droid vs Melthaven

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

Head to head
About

Fuzz Droid

This app provides a powerful distortion effect inspired by a modular mixer's gain stage, offering hyper-aggressive sounds with massive harmonics. It features two distinct distortion circuits, advanced tone-shaping, and morphing capabilities for dynamic sound transitions.

Highlights
  • Two asymmetric distortion circuits
  • Custom smoothing function
  • Flexible tone-shaping filters
  • Morph settings for transitions
  • Auto bypass for CPU saving
  • HQ mode with 4x oversampling
  • Light and dark interface modes
Read full description

Fuzz Droid is a distortion effect based on the gain stage in the CP3 modular mixer. A sharp, asymmetric discontinuity generates massive harmonics and makes for a hyper-aggressive sound. It's the rudest effect we've ever made. Crunch It! - Two asymmetric distortion circuits from the OG CP3 module - CP3+: a sharp discontinuity for big harmonics, absolutely brutal on synth drums - CP3-: smooth and heavy, for when the positive curve is too rude - Drive up to +48 dB Digital Extras - Custom smoothing function tames harsh artifacts - Bias control shifts how you hit the asymmetry - Flexible high-pass and low-pass tone-shaping filters - Pre or post filter placement Core Features - Morph Settings for smooth transitions between two complete configurations - Auto Bypass saves CPU when input is silent - AB settings comparison - HQ mode with 4x oversampling and ADAA - One-click loudness matching - All parameters automatable with precise playback - Light and dark interface modes - Internal undo/redo - Auto gain - Standalone app includes support, manual links and in-app purchase options for license purchase Two-week trial included, one-time purchase for full unlock. Unlock your plug-in via in-app purchase from the standalone app or activate in the plug-in using an existing desktop license. Your in-app purchase activates the plug-in on all of your iOS devices. Owners can claim a crossgrade code in the standalone app to receive a discount on a desktop license. Check out our YouTube: https://www.youtube.com/@sketchaudio Read the manuals: https://sketchaudio.com/manuals/

About

Melthaven

This app provides a note-triggered phase shifter for guitarists, bassists, and synthesizers. It offers organic, rhythmic movement that syncs to your playing, with analog-modeled filters for diverse sonic textures. Enhance loops or create experimental sounds with its input-dependent modulation.

Highlights
  • Note-triggered phase shifting
  • Analog-modeled OTA filters
  • Responds to guitar and bass transients
  • Enhances pre-recorded loops
  • Input-dependent synth modulation
  • Low-latency engine
Features
Read full description

Melthaven is a note-triggered phase shifter built to give guitarists and bassists organic, rhythmic movement that syncs to their playing, rather than a fixed LFO. It's also highly suited for a number of synth basses and sounds with sharp attacks and fast decays. Its analog-modeled OTA filters provide deep resonance and character, ranging from wah-like effects to complex, shifting formant textures or even experimental tones, like bubbling or hard, slappy effects. For bright, harmonically dense signals – such as saturated or overdriven tones and synthetic sounds – the effect range also includes growls and glistening sweeps. FOCUSED ON BASS & GUITARS The effect was specially developed to respond to the frequency response and transient peaks of electric guitars and basses. Every pluck, pop, or pick attack re-triggers the phase sweep, effectively turning your rhythmic timing into the "engine" of the effect. USING LOOPS? BREAK THEM OPEN Add various resonant effects like growls, or vintage bark / quacks "after the fact." This unlocks a level of control usually lost the moment a loop is bounced. Instead of being stuck with locked-in sound design, you can now reshape the envelope of any pre-recorded sample, breathing new life into your loop library. FOR SYNTHS & SOUND DESIGN: INPUT DEPENDENT Soft signals like pads or heavy/layered effects can produce wild, unpredictable responses. While such use is outside the plugin's core design, the smoothing feature can tame these re-triggers, yielding a flow that can feel organic and physical in its instability when operating beyond the plugin’s transient-focused comfort zone. MOVING BEYOND ENVELOPE FILTERS The plugin uses low-latency note detection paired with its own envelope generator and LFO, allowing sculpting and even reshaping each note’s modulation profile or filter envelope. It even detects notes that hide under a consistent signal amplitude when using a traditional envelope follower. BASE FEATURES: - Built around a versatile preset from the Pro version to suit a wide variety of applications - Controls: feedback & panoramic position, attack & hold timings, LFO Rate - Smoothing: from envelope shaping to creating a weighted, fluid response, giving note sequences a sense of physical momentum - Low-latency engine: preserves natural playing feel when used as a real-time effect PRO FEATURES - Requires Pro Edition Upgrade (In‑App Purchase): - Additional envelope parameters, several envelope flavors with pre-mapped control subsets - Pro presets encompassing both strong and milder effects, including the quintessential rubber bass - Enhanced stereo phaser modes & internal stereo re-imaging modulator (for formant-like effects and more) - Vintage-style phaser feedback that can optionally build or ramp with each note onset (non-rampable in the base version) - Instant visual feedback via an audio scope with dual-channel envelopes overlaid on the input waveform TECHNICAL NOTES: - Place before creative effects (unless experimenting). It can be used before or after harmonic processing (saturation, amp sims) depending on your preference - Response may vary on sustained notes with shifting harmonic content - Not optimized for upright bass due to its reliance on sharp signal transients - Note detection involves statistical signal processing and confidence intervals. Weak transients and phantom notes could lead to a loss of output determinism, i.e. sensitivity to changes in certain project settings - While it offers multiple layers of real-time control, Melthaven operates primarily as an automatic effect; for full manual filter manipulation, please refer to RealPhase, a separate app PLEASE NOTE: • The Pro Edition Upgrade is offered as a one‑time In‑App Purchase • An AUv3-compatible host is required to use this app • Suported sampling rates: 44.1, 48, 96 kHz

Screenshots

Fuzz Droid2 screens
Melthaven3 screens

Verdict

The call

The clearest difference is price: Fuzz Droid at Free against Melthaven's $2.99. Fuzz Droid also leads on iOS requirement (14.0 vs 17.0). On rating, ratings volume, update cadence and ads 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

Fuzz Droid is free to download; Melthaven costs $2.99 up front. Fuzz Droid sells 2 one-off in-app purchases and Melthaven sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Fuzz Droid against 5.0 for Melthaven. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 7 level
Fuzz Droid versus Melthaven: the parameters behind the verdict, then further details
ParameterFuzz DroidMelthaven
PriceFree — better$2.99
Rating5.0 (3 ratings)5.0 (4 ratings)
Number of ratings34 — better
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size12 MB23 MB
Age rating4+4+
DeveloperSketch Audio, LLCquantovox

Customer experience

Fuzz Droid

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Melthaven

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Fuzz Droid

One-time2
  • Two-week TrialFree
  • Full Unlock$2.99
1 purchases

Melthaven

One-time1
  • Melthaven Pro$4.99

Questions

Is Fuzz Droid free?
Fuzz Droid is free to download, with in-app purchases available.
Is Melthaven free?
Melthaven costs $2.99, and also offers in-app purchases.
Which has better reviews, Fuzz Droid or Melthaven?
Fuzz Droid and Melthaven are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.
Do Fuzz Droid or Melthaven have ads?
Neither Fuzz Droid nor Melthaven shows ads.
Which is updated more often, Fuzz Droid or Melthaven?
Fuzz Droid ships an update every 6 weeks, and Melthaven every 6 weeks. Most recently, Fuzz Droid was updated on September 21, 2026 and Melthaven on September 30, 2026.

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