# Melthaven — Note-triggered phase shifter > Note-triggered phase shifter for guitars, basses, and synths with analog-modeled filters. (iPhone/iPad app by quantovox.) - Source: https://appshunter.io/ios/app/melthaven/id6761633340 (this page in markdown: same URL + `.md`) - Developer: [quantovox](https://appshunter.io/developer/484686124) - Category: Music, Productivity - Price: $2.99 with in-app purchases - Rating: 5.00/5 from 4 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 23 MB - Languages: American English - Released: 2026-05-14 - Data updated: 2026-08-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/melthaven/id6761633340/reviews.md ## What is Melthaven? 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 ## Key features - 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 ## Pricing and in-app purchases Base price: $2.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Melthaven Pro | $4.99 | one-time | ## Frequently asked questions about Melthaven ### What is Melthaven? Melthaven is a music app that functions as a note-triggered phase shifter. It's designed to add organic, rhythmic movement to guitar, bass, and synthesizer sounds by syncing modulation to your playing. ### What kind of sounds can Melthaven create? Melthaven uses analog-modeled OTA filters to produce a wide range of tones, from wah-like effects and complex formant textures to experimental bubbling or hard, slappy sounds. It can also create growls and glistening sweeps for bright, harmonically dense signals. ### Can Melthaven be used with loops? Yes, Melthaven can be used to add resonant effects like growls or vintage bark to pre-recorded loops. This allows you to reshape the envelope of existing samples and breathe new life into your loop library. ### How does Melthaven work with synthesizers? Melthaven's results with synthesizers vary based on the input signal's transients. For sounds with softened transients, it can produce unpredictable and experimental responses, which can be tamed with the dedicated smoothing feature for a more fluid feel. ### What are the base features of Melthaven? The base version includes controls for feedback, panoramic position, attack and hold timings, and LFO Rate. It also features a smoothing control for envelope shaping and a low-latency engine to preserve natural playing feel. ### What does the Pro Edition Upgrade offer in Melthaven? The Pro Edition Upgrade, available as an in-app purchase, adds additional envelope parameters and flavors, Pro presets, enhanced stereo phaser modes, and vintage-style phaser feedback that can ramp with each note onset. ### Is Melthaven suitable for beginners? Melthaven is built around a versatile preset from the Pro version, making it suitable for a wide variety of applications. Its intuitive design and responsive nature should be accessible to musicians of different experience levels. ### Does Melthaven have ads? No, Melthaven does not contain advertisements. It is a free app with optional in-app purchases for advanced features. ## Version history (last 3 releases) ### 1.1.1 — 2026-07-30 • Pro Edition IAP stability: Enhanced purchase verification robustness to better handle connectivity edge cases ### 1.1.0 — 2026-05-28 • Mix and FX (wet) level controls added to the Pro Edition • Fixed an issue around plugin initialization, potentially impacting saved state reloads or initial effect state • Envelope levels before the very first note now correctly match those of subsequent notes (e.g. after a preset load) • Stereo re-imager now supports tempo syncing • Reduced startup times • Improved fidelity for envelope visualization ### 1.0.0 — 2026-05-14 No release notes. ## More apps by quantovox - [Spatializer](https://appshunter.io/ios/app/spatializer/id1574889552) - [RealPhase](https://appshunter.io/ios/app/realphase/id1588403482) - [True Pan](https://appshunter.io/ios/app/true-pan/id6444190718) - [Mid-Side Continuum](https://appshunter.io/ios/app/mid-side-continuum/id6465949713) - [Ringotron](https://appshunter.io/ios/app/ringotron/id6474263444) - [Fettkraft](https://appshunter.io/ios/app/fettkraft/id6755074522) All apps by quantovox: https://appshunter.io/developer/484686124 ## Related topics [quantovox](https://appshunter.io/ios/topics/quantovox) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*