Resonator Audio Unit vs GridStep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resonator Audio Unit
This audio effect plugin generates natural resonances to add warmth and fullness to instruments or recordings. It offers controls for acoustic body characteristics and includes an additional reverb effect for standalone use. The app utilizes unique, realistic algorithms for its sound shaping capabilities.
- Natural sounding resonances
- Acoustic body thickness and size control
- Resonance amount control
- Additional reverb effect
- Standalone app mode with Efx on/off
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Resonator Audio Unit is an audio effect that creates natural sounding resonances in an acoustic body. That will add warmth and fullness to the tone of any instrument or to your record. You can control the acoustic body thickness, size and the amount of resonances. There is also additional reverb effect so you can add reflections to the sound of the resonator. This is useful if you use the app as a standalone to get your whole sound and play on your instrument via iRig or similar adapter. The app uses realistic and innovative algorithms created by me that you can not find in other software. Features of the Resonator Audio Unit: - warm and natural sounding resonances - acoustic body controls for thickness and size - resonances amount control - additional reverb effect - Efx on/off button (available when used as a stand alone app)
GridStep
A professional MIDI step sequencer offering a focused grid-based workflow for clear, controlled, and predictable music creation. It functions as a standalone app and an AUv3 plugin, ideal for both live performance and composition.
- Grid-based MIDI step sequencing
- Explicit edit modes for notes, velocity, slides, and mutes
- Trigger-based step advance
- Controlled pattern generation
- AUv3 MIDI effect plugin
- Standalone app functionality
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GridStep is a professional MIDI step sequencer designed for clarity, control, and predictable results. It works as a standalone app as well as an AUv3 plugin. GridStep provides a focused grid-based workflow with explicit edit modes, per-step inspection, and one-shot generation tools. Every interaction is intentional, allowing patterns to evolve without ambiguity. Core Features Explicit Edit Modes - Dedicated modes for Notes, Velocity, Slides, and Mutes - Clear, consistent interactions across the grid Precision Grid Editing - Step-based grid with visible playhead and pattern length - Per-step inspector for detailed control - Efficient editing without leaving the main view Trigger-Based Step Advance - Advance the sequence using incoming MIDI triggers instead of the host clock - Enables irregular rhythms, external control, and non-linear playback - Fully compatible with standard clocked playback Controlled Generation - Pattern generation for notes, velocity, slides, and mutes - Apply generation globally, per lane, or per selection - Designed to support musical intent Performance-Focused Design - Deterministic, repeatable sequencing behaviour - Stage-safe interface optimized for quick adjustments - Predictable timing within AUv3 hosts AUv3 MIDI Effect - Works in AUv3 hosts such as AUM, Drambo, Logic, and Cubasis - MIDI-only design compatible with any synth or sampler Built for both live performance and composition, GridStep emphasizes stability, readability, and repeatable behaviour.
Screenshots
Verdict
The clearest difference is update cadence: GridStep at every 2 weeks against Resonator Audio Unit's every 38 months. Resonator Audio Unit's advantage is price ($2.99 vs $3.99) and iOS requirement (10 vs 17.6). On rating, ratings volume, ads and in-app purchases 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
Resonator Audio Unit costs $2.99 and GridStep $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Resonator Audio Unit against 5.0 for GridStep. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
Resonator Audio Unit ships an update every 38 months, GridStep every 2 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.
| Parameter | Resonator Audio Unit | GridStep |
|---|---|---|
| Price | $2.99 — better | $3.99 |
| Rating | 5.0 (3 ratings) | 5.0 (3 ratings) |
| Number of ratings | 3 | 3 |
| Update frequency | Every 38 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10 — better | 17.6 |
| Further details — not scored | ||
| Size | 10 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Joe Topjian |
Customer experience
Resonator Audio Unit
GridStep
In-app purchases
Resonator Audio Unit
No in-app purchases
GridStep
No in-app purchases









