RRS Ivoks vs EZPZ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RRS Ivoks
This app emulates analog synthesizers, offering a range of sound shaping tools including oscillators, filters, and amplifiers. It supports AUv3 hosting for integration with music production apps and provides extensive MIDI control.
- Analog Emulation
- AUv3 Compatible
- Dual Oscillators
- Filter Block with ADSR
- Amplifier Block with ADSR
- Modulation (LFO) Controls
- MIDI CC Implementation
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RRS Ivoks AUv3 instrument — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the RRS Ivoks AUv3 instrument as many times as you want, thereby you get the Demo period again and again.) Unlimited version of RRS Ivoks AUv3 instrument comes as In-App Purchase. Features: • Analog Emulation; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Scalable GUI. On the centre panel are located two audio-frequency oscillators: • OSC1 offers frequency Band regulator, five Waveforms and controls for LFO Modulation level plus OSC2 Cross-modulation; • OSC2 offers the same frequency Band and Waveforms, an independent control for Modulation depth, plus Detuning. Underneath these located the mixer, which offers level controls for the two Oscillators, the Noise generator, and Saturation Drive. To the right of these, located the filter block. The top half is a standard ADSR envelope — until you flip the switch «Envelope mode», when it becomes a repeating AD-envelope instead. The four controls at the bottom adjust Cut-off, Resonance, LPF to BPF switch, Modulation level and Envelope level. Next after the filter is the amplifier block, it also has ADSR envelope along with another Modulation level and Velocity sensitivity control. Again, the envelope can be switched to a Repeating Mode that generates a triangular waveform determined by the Attack and Decay settings, providing some of the instrument’s most distinctive effects. The leftmost panels house the Modulation (LFO) controls (top), Mode which offers four waveforms, including noise, and a stepped Function for sample & hold (S&H) effects, well as Speed control. And global settings such as the master Tune, master Volume, Legato mode, Monophonic and Duophonic operation and Unison switches, and the Glide control. To use Ivoks as an instrument, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — RRS Ivoks will appear in the list of Audio Unit instruments in the host app. MIDI CC Implementation Chart: • CC#003 => HQ • CC#009 => Saturation Drive • CC#014 => Modulator Speed • CC#015 => Modulator Mode • CC#020 => Filter Attack • CC#021 => AMP Attack • CC#022 => Filter Decay • CC#023 => AMP Decay • CC#024 => Filter Sustain • CC#025 => AMP Sustain • CC#026 => Filter Release • CC#027 => AMP Release • CC#028 => Filter Envelope Mode • CC#029 => AMP Envelope Mode • CC#030 => OSC1 Band • CC#031 => OSC2 Band • CC#085 => OSC1 Waveform • CC#086 => OSC2 Waveform • CC#087 => OSC1 XMod • CC#089 => OSC2 Detune • CC#090 => MOD to OSC1 • CC#102 => MOD to OSC2 • CC#103 => OSC1 Level • CC#104 => OSC2 Level • CC#105 => Noise Generator • CC#106 => Global Tune • CC#107 => Global Glide • CC#108 => Global Volume • CC#109 => Global Voice • CC#110 => Global Unison • CC#111 => Global Retrig • CC#112 => Filter Cut-off • CC#113 => Filter Resonance • CC#114 => Filter Mode • CC#115 => MOD to Filter • CC#116 => Filter Envelope • CC#117 => MOD to AMP • CC#118 => Velocity Sensitvity
EZPZ
Create music by drawing sound loops with intuitive controls. Blend sounds with unique brushes, add pre-designed beats, and adjust tempo and loop length. This app simplifies music production for all ages, focusing on the joy of creation.
- Draw sound loops with sound brushes
- Blend sounds with unique kits
- Add pre-designed background loops and beats
- Control volume, delay, and reverb
- Set tempo (BPM) and loop length
- Intuitive interface for all ages
- Erase, tweak, and redefine creations
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Draw sound loops with EZPZ, the boundless music production app that transforms your iPhone into a therapeutic brain machine, infusing the thrill of music creation with the tactile fun of finger-painting. [ A PALETTE OF SOUNDS ] • Blend with Sound Brushes: EZPZ offers the "Ventura" sound kit crafted by Cari Lekebusch. The kit houses five unique sets of sound brushes, offering you an ocean of sonic possibilities. Keep your doodles playing while you switch between sound kits for an unexpected twist in your soundscape. Additional sound kits can be obtained by subscribing and are made by Alexi Delano, Dustin Zahn, Joel Mull, Linn Elisabet, Mr. Barth, Mystic Letter K, Ray Kajioka and Seba. [ EXPLORE INFINITE VARIATIONS ] • Master Your Sonic Experiments: Indulge in infinite sound combinations with the freedom to erase, tweak, and redefine your creations. EZPZ gives you control over volume, delay, and reverb by any sound button. [ ADD PRE-DESIGNED LOOPS OR BEATS ] • Bring depth to your creations with a diverse array of background loops and beats that span a variety of moods and BPMs. These pre-designed loops can serve as a rhythmic backbone for your compositions, setting the perfect stage for your finger-drawn loops. [ TEMPO AND LOOP LENGTH ] • Set Your Pace: EZPZ allows you to set the tempo (BPM) and loop length that suit your style. Whether crafting a fast-paced creation or a slow, meditative soundscape, you control the rhythm. And when you're using a background beat, the tempo locks in harmony with the loop. [ SIMPLICITY ] • Embrace the Ease: EZPZ emphasizes simplicity, stripping away the complexities of audio production, to focus on the joy of creating music. [ INTUITIVE ] • Create with ease for all age groups: EZPZ's clear and intuitive interface makes creating music as simple and immediate as possible. Press and hold the undo button to clear your canvas and start anew whenever inspiration strikes. Connect your earphones, download EZPZ, and doodle away. We're always here to help at ezpz@h-productions.se for any queries or feedback.
Screenshots
Verdict
The clearest difference is rating: EZPZ at 5.0 against RRS Ivoks's 4.4. EZPZ also leads on review sentiment (100% vs 63%). RRS Ivoks's advantage is iOS requirement (10.0 vs 18.6). On price, 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
Both are free to download. RRS Ivoks sells 1 one-off in-app purchase and EZPZ sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
EZPZ holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 46 and 29 respectively. Written reviews point the same way: 63% of RRS Ivoks's written reviews are positive against 100% of EZPZ's.
RRS Ivoks ships an update fortnightly, EZPZ every 4 weeks. Both last shipped on November 3, 2026.
| Parameter | RRS Ivoks | EZPZ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (46 ratings) | 5.0 (29 ratings) — better |
| Positive reviews | 63.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 46 — better | 29 |
| Update frequency | Fortnightly — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 19 MB | 220 MB |
| Age rating | 4+ | 4+ |
| Developer | RRS, OOO | Kari Lekebusch |
Customer experience
RRS Ivoks
EZPZ
In-app purchases
RRS Ivoks
- RRS Ivoks Unlimited$8.99
EZPZ
- Monthly7 Days trial$5.991 Month
- Annual7 Days trial$34.991 Year









