SignatureEQ vs Ample Juice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SignatureEQ
This professional 6-band parametric equalizer offers real-time sound shaping for musicians and producers. Its interactive interface allows precise adjustments to frequency, gain, and Q using intuitive gestures. Designed for performance, it integrates seamlessly with AUv3 compatible hosts on iPhone and iPad.
- 6 fully parametric bands
- Real-time frequency response display
- Intuitive gesture controls
- Supports 7 filter types per band
- AUv3 integration
- Preset and automation support
- Zero audio thread allocation
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Signature EQ is a professional 6-band parametric equalizer designed as an AUv3 audio unit extension for iPhone and iPad. Load it in AU EngineCore or any AUv3 compatible host and shape your sound with precision, in the studio or on stage. Real-Time Interactive Interface The entire interface is a live frequency response display. Drag nodes to adjust frequency and gain, pinch to control Q, double-tap to reset. No sliders, no menus, just the curve, responding to your touch in real time. Six Parametric Bands - Low Shelf at 80 Hz for bass body and warmth - F1 at 250 Hz for low-mid control - F2 at 1 kHz for mid presence and clarity - F3 at 3.5 kHz for upper-mid attack and definition - F4 at 8 kHz for presence and air - High Shelf at 12 kHz for brilliance Every band supports 7 filter types: High Pass, Low Shelf, Peak, Notch, Band Pass, High Shelf, and Low Pass. Any band can be any filter type at any time. Built for Performance Zero allocation on the audio thread. Zero locks. No artifacts, no interruptions regardless of buffer size or host load. Full AUv3 Integration Presets save and recall instantly. Scene changes in the host reflect immediately in the interface. Features - 6 fully parametric bands - Real-time frequency response display with band nodes - Drag, pinch, and double-tap gestures - Full preset and automation support - Double-precision DSP - zero audio thread allocation - Universal: iPhone and iPad
Ample Juice
This app simulates a guitar amplifier, cabinet, and microphone setup, allowing musicians to shape their tone with intuitive controls. It offers a range of sounds from clean to heavy distortion and includes a built-in tuner and preset saving.
- Simulated amp, cabinet, and microphone
- Adjustable gain, EQ, and mic positioning
- Pulp and boost effects
- Built-in chromatic, guitar, and bass tuner
- 25 factory presets
- AUv3 effect and standalone app
- MIDI and automation support
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Plug in. Tune up. Play a chord. If it needs more bite, turn it up. If the low strings need to hit harder, add Pulp. If the top end is getting in the way, move the microphone. Ample Juice works like the rig you already understand, because playing guitar should not feel like programming one. ONE SCREEN, LIKE AN AMP The whole signal path is in front of you: gate, boost, drive, amp, 4x12 and microphone. No pages to remember and no puzzle of hidden settings. Start with the controls you know, turn them until the guitar sits right, and leave the rest alone. FROM CLEAN ENOUGH TO LEAD READY Juice covers the ground between edge-of-breakup rhythm and a full lead voice. The first part of the dial adds body and sheen. The middle is where crunch lives. The last stretch opens quickly for sustain and saturation. Even when the gain is up, chords keep their notes instead of folding into one fizzy block. Pulp sits before the amp, where your boost pedal would. It trims low end before the clipping starts and leans into the midrange, so palm mutes land firmly and down-tuned riffs do not spread across the floor. Throw the Clean lever and the drive section steps aside; throw it back and every dirty setting is waiting where you left it. POSITION THE MIC BY TOUCH OR MOUSE No need to translate what you hear into studio jargon. Put a finger on the mic and move it, or grab it with a mouse. Position it toward the cone centre for cut, toward the edge for warmth, farther back for space, or off-axis to soften a sharp pick attack. The cabinet picture is the control—move what you see and listen as the tone follows. READY WHEN THE RIFF ARRIVES Use it as an AUv3 effect in your host or open the standalone app and choose your interface input. It adds no latency, so the note stays under your fingers. The tuner is already at the front of the rig, presets can save without stopping playback, and every control can follow MIDI or automation. 25 factory presets give you useful starting points for clean, crunch, metal, lead and more. Save the sounds that belong to your songs and take them across your devices. SPECIFICATIONS - Audio Unit v3 effect and standalone app - iPad, Mac, iPhone and Apple Vision Pro - Mono or stereo, zero added latency, no tail - 44.1 / 48 / 96 kHz as a plug-in and in the Mac app; 44.1 / 48 kHz in the iPhone and iPad app - All 22 controls automate and assign to MIDI - 25 factory presets across eight categories - Built-in chromatic, guitar and bass tuner - True bypass, click-free and safe to automate - Built-in user manual
Screenshots
Verdict
The clearest difference is review sentiment: SignatureEQ at 100% against Ample Juice's 50%. SignatureEQ also leads on rating (4.5 vs 4.0) and price ($5.99 vs $7.99). On ratings volume, ads, in-app purchases 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
SignatureEQ costs $5.99 and Ample Juice $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SignatureEQ holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of SignatureEQ's written reviews are positive against 50% of Ample Juice's.
| Parameter | SignatureEQ | Ample Juice |
|---|---|---|
| Price | $5.99 — better | $7.99 |
| Rating | 4.5 (2 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 2 |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 26 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Antonio Sorin TASU | Christian Thompson |
Customer experience
SignatureEQ
Ample Juice
In-app purchases
SignatureEQ
No in-app purchases
Ample Juice
No in-app purchases









