Appstuff

Mac apps that do one job well.

Native utilities for Apple silicon, a suite of tools for web developers, and custom apps built for clients, all designed and made at Xenoplexus Studios.

Apple silicon native Signed & notarized No subscriptions No analytics

Mac apps

Everyday Mac apps

Small, native apps for Apple silicon. Some replace tools that stopped keeping up with the Mac; others do a job nothing else did quite right.

Beta

Rewrap

Remux and convert video into Apple-friendly MP4 and M4V. Passthrough first, with chapters and artwork kept.

macOS 14+ · v1.0.0 · FreeReplaces MP4tools
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Bitrate

Drag-and-drop audio conversion to MP3, AAC, ALAC, FLAC, WAV, OGG and Opus, with tags and artwork intact.

macOS 14+ · v1.1.1Replaces NCH Switch
In development

Retitle

A subtitle editor for SRT, SSA/ASS and WebVTT: retime, fix conflicts, clean up and convert. The companion to Rewrap.

macOS 14+Replaces SUBtools
Beta

Cadence

Time Machine on your schedule: Manual mode is back, and backups run only when your backup disk is actually plugged in.

macOS 14+ · v1.0Menu bar app
In development

Steward

Plain-English bookkeeping for tiny nonprofits, over audit-grade double-entry books with fund tracking.

macOS 14+For nonprofits
Request access

Classroom Diaries

Record a lesson, transcribe it on your Mac, and publish the vocabulary you actually taught to each class’s Google Doc.

macOS 14.2+ · v1.15.2For language teachers
Also from us, on its own site

Kettlestitch

A native EPUB editor that opens, checks and repairs EPUB files, and turns DOCX, Markdown or HTML into clean, valid EPUB 3.

Available

Little utilities

Small, single-purpose Mac helpers we built for ourselves.

Unhide Me

Show or hide Finder’s hidden files in one click

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MenuSearch

Apps, files and quick math from Option-Space

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Zip Me Up

Clean zips without .DS_Store or __MACOSX

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MP4tools, NCH Switch, SUBtools, invisibliX and YemuZip are trademarks of their respective owners. Our apps are independent and are not affiliated with or endorsed by them.

XenoTools

Tools for web developers

Native Mac apps for building, serving and shipping PHP sites. Boring, inspectable and scriptable: every app has a command line that does what the buttons do.

In development
Start

XenoMaster

Start every project from a CMS template, registered with every XenoTool, and archive it when it ends.

macOS 15+
Beta
Build

XenoKit

Compiles Sass, JavaScript, TypeScript and CSS as you save, from rules you commit in .xenokit.yml. Imports CodeKit projects.

macOS 15+ · v1.12.0Replaces CodeKit
Beta
Serve

XenoHost

Local Apache, PHP and MySQL in a native control panel, with HTTPS, .local names and safe rollback.

macOS 15+ · v1.0.4Replaces MAMP PRO
In development
Query

XenoSQL

A careful MySQL and SQLite client. Edits are staged, and you see the exact SQL before anything is sent to the server.

macOS 15+
In development
Ship

XenoDeploy

Deploy PHP sites to your own server from your Mac, with a plan before every deploy and rollback after.

macOS 15+
In development
Audit

XenoAudit

One read-only board for outdated dependencies and drift between your Mac and production.

macOS 15+

CodeKit and MAMP PRO are trademarks of their respective owners. XenoTools are independent and are not affiliated with or endorsed by them.

Our approach

How we make apps

The same rules for every app we ship, big or small.

  • Apple silicon native

    Written in Swift for M-series Macs. No Rosetta, no web wrappers, no Homebrew to install first.

  • Private by default

    No analytics or telemetry. When an app does use an outside service, like Classroom Diaries with your own AI key, it tells you up front.

  • Pay once per version

    Our paid apps are a one-time purchase per major version, with every update to it included, on two Macs. Upgrades are half price. No subscriptions.

  • Signed & notarized

    Every release is signed with our Developer ID and notarized by Apple, so macOS knows exactly where it came from.

App development

Need an app of your own?

We design and build Mac, iPhone and iPad apps for businesses and organizations, from companion apps for your website to internal tools that take the busywork off your team.

  • Mac apps
  • iPhone & iPad apps
  • Companion apps for websites
  • Internal tools & automation

Have an app in mind?

Tell us what it should do and who it’s for, or ask us about one of our apps. We’ll get back to you within 24 hours.

Need help with an app or a license? Open a support ticket →

We reply within 24 hours on business days.