FAQ

Common questions.

Everything we get asked most, in one place. Can't find it here? Support has quick fixes, or contact us directly.

The product

What Nocturn does

Does Nocturn slow down my PC?

No. Nocturn reads the process and connection lists Windows already maintains — it doesn't add its own scanning loop. Typical CPU usage is under 0.1%, RAM around 40 MB. It's designed to be quieter than a browser tab.

Do I still need Windows Defender or my existing antivirus?

Yes — keep it on. Nocturn is a complement to Windows Defender, not a replacement. Defender does the deep, real-time, kernel-level file blocking; Nocturn adds AI-awareness, clipboard protection, and a quiet second-opinion scanner. They work alongside each other.

Will it conflict with my existing antivirus?

Generally no. Nocturn runs in user mode with no kernel driver, so it coexists with Defender and most third-party AV. If your AV is very aggressive, add an exclusion for Nocturn's install folder so it doesn't flag Nocturn's own signatures.

Can Nocturn read my AI conversations?

No. Nocturn monitors which processes are running and which network connections they make — the same information Windows Task Manager shows you. It does not intercept, decrypt, or log the content of any traffic.

What does the Clipboard Guard actually protect against?

Clipboard hijacking — malware that silently watches your clipboard and swaps sensitive copied data for something the attacker controls. The most common real-world case is a copied crypto wallet address being replaced with the attacker's, so a payment goes to them instead. Nocturn monitors clipboard changes, detects address substitutions, and alerts you instantly, offering to restore what you actually copied. Covers BTC, ETH/EVM, XRP, LTC, TRX, DOGE. Sophisticated kernel-level malware could bypass this, but it defeats the vast majority of commodity clipboard hijackers used in the wild.

What are System Apps and Drive Control for?

System Apps is a searchable, categorised launcher for every installed utility and Windows control-panel applet — one click instead of digging through Start Menu. Drive Control lets you take any non-system drive offline with one click, enforced by Windows itself — handy for isolating backups or personal data before testing something you don't fully trust. See Use Cases for a worked example.

Buying & licensing

Purchase, activation, updates

Is this a subscription?

No — one-time purchase, £29. You own the V1 line for life, with free updates for every V1.x release. A future major version (V2) may be a separate optional paid upgrade, but you're never forced onto it.

What happens if I get a new PC?

Deactivate on your old machine via Settings, then activate on the new one with the same key. One seat per licence. If you lose access to the old machine, contact [email protected].

Will I get future updates?

Yes — all V1.x updates are free. If a V2 subscription tier launches in future, V1 Founding Members keep their V1 licence for life at no extra cost. We'll be transparent about what that means before it happens.

What's your refund policy?

A 14-day money-back guarantee from the date of purchase, on top of your statutory rights if the software is faulty or not as described. See the full Terms for details.

Trust & privacy

What Nocturn does and doesn't see

Does Nocturn phone home?

No. Nocturn is local-first — it doesn't send usage data, telemetry, process lists, or file contents anywhere. Everything runs on your machine.

Is Nocturn open source?

Not currently. It's closed-source, commercially licensed software. The full Terms & Disclaimer spell out exactly what the licence does and doesn't allow.

Still have a question? Check Support for quick fixes, or email [email protected] — a real person reads every message.