# XenScalePreview — .scl file preview in QuickLook

> .scl file preview in QuickLook (iPhone/iPad app by Alexey Nadzharov.)

- Source: https://appshunter.io/ios/app/xenscalepreview/id6820683570 (this page in markdown: same URL + `.md`)
- Developer: [Alexey Nadzharov](https://appshunter.io/developer/729549192)
- Category: Music, Utilities
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Chinese (Simplified, China), European Spanish
- Released: 2026-10-27
- Data updated: 2026-10-28

## What is XenScalePreview?

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.

## Is XenScalePreview safe?

Not enough ratings yet to assess XenScalePreview.

## Is XenScalePreview legit?

XenScalePreview appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for XenScalePreview is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-27

No release notes.

## More apps by Alexey Nadzharov

- [Phawuo](https://appshunter.io/ios/app/phawuo/id729549189)
- [rrarrow](https://appshunter.io/ios/app/rrarrow/id814966319)
- [soundfruuze](https://appshunter.io/ios/app/soundfruuze/id1279045883)
- [lfoch](https://appshunter.io/ios/app/lfoch/id1665885755)
- [keyboaredo](https://appshunter.io/ios/app/keyboaredo/id6444124951)
- [sinusedo](https://appshunter.io/ios/app/sinusedo/id6444181090)

All apps by Alexey Nadzharov: https://appshunter.io/developer/729549192

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-28.*