Comparison

Stereo Phaser vs GridStep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stereo Phaser

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
Read full description

That is nice phaser effect that can run in stereo mode. The app is Audio Unit AUv3. In stereo mode the signal is split and run through 2 phaser effects with different frequency settings but same rate, depth and feedback that are shifted in stereo space with the same rate(same as the phasers’) The app is an Audio Unit Effect AUV3 and can be used inside GarageBand or other AU host apps as an effect plug-in. Stereo Phaser can also run as a stand alone app adding effect to the audio input so you can play your guitar, bass or synth directly through the app if you have the connector to do so. Stereo Phaser controls: - Rate - that is the phaser speed - Depth - phaser depth - Feedback - effect feedback - Stereo - stereo spread

About

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.

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
Read full description

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

Stereo Phaser2 screens
GridStep4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Stereo Phaser versus GridStep: the parameters behind the verdict, then further details
ParameterStereo PhaserGridStep
Price$1.99 — better$3.99
Rating1.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings13 — better
Update frequencyEvery 38 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better17.6
Further details — not scored
Size10 MB5 MB
Age rating4+4+
DeveloperAleksandar MlazevJoe Topjian

Customer experience

Stereo Phaser

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

GridStep

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stereo Phaser

No in-app purchases

None

GridStep

No in-app purchases

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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