# Resonator Audio Unit vs GridStep

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.

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.

## The numbers

| Metric | Resonator Audio Unit | GridStep |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/resonator-audio-unit/id1225597875/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gridstep/id6756443258/reviews) |
| Number of ratings | 3 | 3 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 10 MB | 5 MB |
| Requires iOS | **10** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) | [Joe Topjian](https://appshunter.io/developer/1860697112) |

## What reviewers say

### Resonator Audio Unit

[App page](https://appshunter.io/ios/app/resonator-audio-unit/id1225597875)

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.

**Highlights:** Natural sounding resonances, Acoustic body thickness and size control, Resonance amount control, Additional reverb effect, Standalone app mode with Efx on/off

**Features:** Vision Pro support

**In-app purchases:** none


### GridStep

[App page](https://appshunter.io/ios/app/gridstep/id6756443258)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is Resonator Audio Unit free?

Resonator Audio Unit costs $2.99, with no in-app purchases.

### Is GridStep free?

GridStep costs $3.99, with no in-app purchases.

### Which has better reviews, Resonator Audio Unit or GridStep?

Resonator Audio Unit and GridStep are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do Resonator Audio Unit or GridStep have ads?

Neither Resonator Audio Unit nor GridStep shows ads.

### Which is updated more often, Resonator Audio Unit or GridStep?

Resonator Audio Unit ships an update every 38 months, and GridStep every 2 weeks. Most recently, Resonator Audio Unit was updated on October 7, 2026 and GridStep on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*