XenScalePreview
.scl file preview in QuickLook
$0.99
Unofficial Quick Look preview for Scala microtonal scale files (.scl) for iOS/iPadOS
Select an .scl file in Files, Mail or Messages.
The preview is split in two panes or stacked on a phone:
Left: the file name, description and a summary (note count, period, step sizes, equal-division detection). Below that come a pitch wheel and a one-period keyboard. Each degree owns the span halfway to its neighbouts, so wedge and key widths follow the real pitch spacing. A degree is drawn as a black key when its nearest 12-TET pitch is C#, D#, F#, G# or A#. Wheel labels show cents, unrounded as written in the file, or to 3 decimals for ratios. Last comes a table of every degree with its value, cents, step and nearest 12-TET note.
Right: the file itself as read-only source with line numbers. Comments, the description, the note count and pitch values are highlighted, and a line that fails to parse is underlined.
The app itself installs the QuickLook extensions and also allows audio preview of a scale with sine wave oscillators.
XenScalePreview is open source. The macOS Quick Look extension is free on GitHub; buying it here supports ongoing development and gets you automatic updates and the iOS version.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Alexey Nadzharov, 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
- Alexey Nadzharov
- Size
- 1.1 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, French, German, Italian, Japanese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Alex Nadzharov
