GridStep
Grid-based MIDI step sequencer
$4.99
A precision AUv3 MIDI step sequencer with explicit edit modes, controlled generation, and a grid built for performance.
GridStep is a professional AUv3 MIDI step sequencer designed for clarity, control, and predictable results.
GridStep is an AUv3 MIDI effect and requires a compatible host app. It does not run as a standalone instrument.
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.
Ratings & Reviews
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Navigation and drop down menu improvements
The developer, Joe Topjian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Joe Topjian
- Size
- 3.2 MB
- Category
- Music
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Joe Topjian
