❓ Frequently Asked Questions

You can buy the Premium version directly on the zkkTools website. Click "Premium" in the main menu, choose your plan (monthly or yearly) and complete the purchase through Stripe. You will receive an activation code by email immediately after payment.

Open zkkTools, go to Settings → Activation and enter your activation code. You can activate the license on up to 3 devices at the same time. Make sure you are connected to the internet during activation.

Yes. We offer a 30-day satisfaction guarantee. If you are not happy, request a full refund — no questions asked. Just email support@zkktools.com with your activation code.

The Premium version is subscription-based. You can choose a monthly or yearly plan. The subscription renews automatically, but you can cancel at any time from your account. The Free version has no time limit.

Operating System: Windows 11 (Build 22000 or later)
RAM: 4 GB minimum
Disk Space: 100 MB
Connection: Internet, for activation and updates

Completely safe. zkkTools is verified by Avast, McAfee and Windows Defender. It contains no malware, spyware, adware or any unwanted software. We are certified "Safe to Use" on all major antivirus platforms.

Yes. Your Premium license lets you activate zkkTools on up to 3 devices at the same time. You can manage your activated devices in the "My Account" section of the website.

No. zkkTools uses proprietary algorithms that go through extensive quality testing. Backups are created automatically before any operation, and you can restore with one click if needed.

zkkTools browser cleanup works with Chrome, Firefox, Edge, Opera, Brave and Safari. The online dashboard works in any modern browser (Chrome, Firefox, Edge, Safari).

It varies with how your system is used, but on average users reclaim 20–50 GB. Some users with older PCs have reclaimed up to 100 GB. The exact amount depends on how many temporary, cache and leftover files your system has.

Yes. zkkTools Game Mode automatically detects when you open a game and applies optimizations to maximize FPS. You can also toggle it manually from the system tray.

Yes, it is entirely safe. zkkTools creates automatic backups before any registry change. If something goes wrong, you can restore with one click. Beyond that, the tool only removes entries that are proven safe to delete.

We recommend a deep cleanup weekly or monthly, depending on usage. For heavy users, weekly is ideal. zkkTools can be scheduled to run automatically at a specific time.

zkkTools checks for updates automatically every week. When an update is available you get a notification and can install it with one click. Premium users get priority access to feature updates.

Yes. Free users get email support (48-hour response). Premium users get priority 24/7 support with a response within 2 hours. You can also browse our full documentation on the website.

If you find a bug, use the "Report a Problem" option in the zkkTools Help menu, or email support@zkktools.com with details. Including the program logs (Settings → Diagnostics) helps us fix it faster.