Help

Open the app, press Buy and pay on our checkout. We take cards, Apple Pay, Google Pay and MobilePay, and the price is shown in your own currency. When the payment goes through you land on a page with your licence key and your downloads, and the same key is e-mailed to you.

You do not need one for the Microsoft Store version: it is licensed through the Store and updates itself.

If you would also like a key for the download from this site (the portable version, for example), contact us with your Microsoft Store order number. We handle these by hand, usually within one working day.

Open the itch.io page, choose your app and paste the download link from your itch.io purchase (or just the key= part of it). Your licence key appears right away. If it does not work, contact us and tell us the e-mail address you bought with.

Look in your spam folder first. The key is also shown on the page you land on after paying, and you can always get it again on the downloads page with your order id (it starts with XO-) and the e-mail you paid with. Still nothing? Contact us.

Open the app and go to About (in some apps under Preferences, then About). Paste the key and press Activate. The key is checked on your own computer, so it works without an internet connection.

Install the app again and use the same key. If you cannot find it, the downloads page shows it again with your order id and e-mail. For itch.io purchases use the itch.io page again.

Download links are valid for 24 hours. Get fresh ones any time on the downloads page with your order id and e-mail.

Yes. Every release is scanned for viruses before we publish it. That screen (Microsoft Defender SmartScreen) appears for apps from small independent publishers that Windows has not seen very often yet. It says nothing bad about the file itself, and it goes away as an app becomes better known.

To start the app anyway: click More info, then Run anyway. You only do this once.

Want to be sure? Every download on this site shows a file check code. It is a fingerprint of the exact file we published, so you can confirm yours is identical. Not sure how? Contact us and we will walk you through it. The Microsoft Store versions never show this screen.

Every release goes through virus scans before we publish it, but new apps from small publishers are sometimes flagged by mistake. Compare the file check code with the one on the download page (we can show you how). If it matches and the warning stays, contact us with the file name and the name of the antivirus, and we will look into it.

Setup installs the app like any other program. Portable is a ZIP: extract the whole folder somewhere you can write, run the app from there, and its settings stay next to it. Both are the same version.

Setup: Windows Settings, Apps, then pick the app and Uninstall. Portable: close the app and delete its folder. On Linux, remove the .deb in your package manager, or delete the AppImage file.

Every app page lists its requirements under Details. Spectramp also has Linux downloads (.deb and AppImage) on its page.

Microsoft Store versions update through the Store. Versions downloaded here are updated by downloading the new version from the downloads page (or from your order page); your licence key keeps working.

Yes. Our paid apps have a 7-day trial on the Microsoft Store, linked on each app page. Several of our apps are completely free, so you can also see how we build before spending anything.

We do not refund purchases made on this site. That is exactly why we offer trials, demos and free software: so you can be sure an app suits you before you pay.

If something does not work the way it should, contact us and we will fix it. Purchases on the Microsoft Store or itch.io go through those stores, so questions about those orders belong with them. More in our terms of sale.

Wait a minute and reload the page you landed on; confirming a payment can take a moment. Then check the downloads page with your order id and e-mail. If that shows nothing, contact us with the time of the payment and the e-mail you used.

Try another card or payment method. If the checkout reports an error, nothing is charged unless the payment completes. If your bank shows a charge but you got no key, contact us.

A receipt is e-mailed by our payment provider when the payment completes. If you need an invoice with specific details, contact us with your order id.

So you can buy where you feel most comfortable: the Microsoft Store, itch.io, Uptodown or here. It is the same app and the same updates everywhere.

The Store handles payment, updates and licence for you, and its apps never show the SmartScreen screen. Buying here gives you a direct download, a licence key you keep, and a portable version.

SkyDSP Mixer Pro is sold on this site, and Fab (the Unreal Engine marketplace) is listed as another place to find it. For questions about a Fab purchase, contact us with your Fab order details.

We read every message. Contact us with the app and version, your Windows version, what you did and what happened. A screenshot helps a lot.

Every app has its own privacy page: Spectramp, ScreenLatch, AppClear, MPFX, ClipShift. They are also linked from each app page.

Usually within one working day.