# Stereo Phaser vs GridStep

The clearest difference is rating: GridStep at 5.0 against Stereo Phaser's 1.0. GridStep also leads on update cadence (every 2 weeks vs every 38 months) and ratings volume (3 vs 1). Stereo Phaser's advantage is price ($1.99 vs $3.99) and iOS requirement (10.0 vs 17.6). On ads, in-app purchases, monetization model and device support there is nothing between them.

Stereo Phaser costs $1.99 and GridStep $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GridStep holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Stereo Phaser 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 | Stereo Phaser | GridStep |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/stereo-phaser/id1249305395/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gridstep/id6756443258/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | — |
| 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 | **10.0** | 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

### Stereo Phaser

[App page](https://appshunter.io/ios/app/stereo-phaser/id1249305395)

This audio effect app provides a stereo phaser with adjustable rate, depth, feedback, and stereo spread. It functions as an Audio Unit AUv3 plugin for hosts like GarageBand or as a standalone application for real-time audio processing.

**Highlights:** Stereo phaser effect, Adjustable rate, depth, feedback, Stereo spread control, Audio Unit AUv3 plugin, Standalone app mode, Real-time audio processing

**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 Stereo Phaser free?

Stereo Phaser costs $1.99, with no in-app purchases.

### Is GridStep free?

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

### Which has better reviews, Stereo Phaser or GridStep?

GridStep is rated higher. Stereo Phaser averages 1.0 out of 5 from 1 ratings, while GridStep averages 5.0 from 3 ratings.

### Do Stereo Phaser or GridStep have ads?

Neither Stereo Phaser nor GridStep shows ads.

### Which is updated more often, Stereo Phaser or GridStep?

Stereo Phaser ships an update every 38 months, and GridStep every 2 weeks. Most recently, Stereo Phaser 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.*