Mac utilities

Small apps that mind their own business.

Three focused macOS utilities that fix one annoyance each — and then get out of the way. No accounts, no telemetry, no subscriptions you forget about. They run on your Mac and stay there.

No account, ever Zero tracking Native Swift, no Electron Under 2 MB each

ScreenGo

Available now

Screenshots the way the Windows Snipping Tool does them — crosshair region, window, full screen — plus a markup editor and scrolling capture that stitches a long page into one tall image.

  • Region, window, full screen
  • Scrolling capture
  • Built-in markup editor
  • Straight to clipboard
See ScreenGofree 14-day trial €19.99 from €15.99 / year

MouseScroll

Coming soon

macOS ties scroll direction to one global switch, so fixing your mouse breaks your trackpad. MouseScroll inverts the wheel only — the trackpad keeps its natural scrolling, untouched.

  • Wheel inverted, trackpad natural
  • No device pairing needed
  • Set once, forget it
Coming soon

Shelf

Coming soon

Dragging a file between two windows means holding your mouse hostage. Shake the mouse mid-drag and a shelf appears next to the cursor — park files, text, links or images there, then drag them out when you're ready.

  • Shake mid-drag to open
  • Files, text, links, images
  • Zip a whole shelf in place
  • No permissions required
The idea

One annoyance each. Nothing more.

These started as personal irritations on my own Mac, and each app is deliberately narrow: it fixes the thing it names and adds nothing else. They're written in Swift with no third-party dependencies, they live in the menu bar instead of the Dock, and they don't ask for an account because there's no server to have an account on.

Privacy isn't a policy page here, it's the architecture. Nothing you capture, drag, or scroll ever leaves your Mac — there's nowhere for it to go.

No network access No analytics or trackers No account, no login Native Swift + AppKit
Questions

Good to know.

Who makes these?
One person — a solo developer in Romania. That's why each app is small and focused rather than a suite with a hundred half-finished features.
When are MouseScroll and Shelf out?
Both are finished and running daily on my own Mac, but they aren't downloadable yet: distributing a Mac app properly needs Apple notarization, so macOS opens it without a scary warning. That's the next step. ScreenGo is available today.
Do I pay once or subscribe?
Your choice on ScreenGo: €19.99 per year, or €49.99 once for a lifetime license that includes all future updates — both 20% off until 12 September (€15.99 and €39.99). Licenses arrive by email as a code and unlock the app offline — no account to create.
Which Macs are supported?
Apple Silicon Macs on macOS 14 Sonoma or later. The apps are native ARM builds — no Rosetta, no Electron, no bundled browser engine.
How do I get support?
Email support@ontagonal.app. It reaches me directly, and since these are small apps I usually know the answer immediately.