GridStep
Grid-based MIDI step sequencer
$3.99
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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
GridStep 1.7.0 brings the following features:
- iPhone Duo support
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
- Provider
- Joe Topjian
- Size
- 4.8 MB
- Category
- Music
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Joe Topjian
