Your computer, at a glance.
The dashboard brings current computer metrics and shortcuts to the app’s areas together. The values are examples, not live computer data.
Product overview available
See how the app works
MeetzkkTools.
A Windows 11 app that brings together system metrics, maintenance tools and specialized modules. Explore what each area does, how it works and where your data stays.
Real zkkTools v14.1.5 captures; PT-BR app interface; this computer's identifiers and readings are hidden.
- Windows 11
- Local data, no telemetry
- Preview and confirmation for compatible actions
—downloads recorded
Explore zkkTools
Review before you clean.
The cleanup tool shows the items it found so you can review them before confirming removal.
Connected tools. You stay in control.
See the dashboard and cleanup tool side by side, using real captures from version 14.1.5. The interface is in Portuguese and local data is hidden.
Explore the Free versionApp areas
- Complete diagnostics
- Internet
- Security + CVEs
- Game Settings
- Energy
- System checks
- Drivers
- Custom themes
Product overview
A clear introduction to everything zkkTools brings together.
zkkTools combines a system metrics dashboard with maintenance tools and specialized Windows 11 modules. Each area has a distinct role, and the catalog below shows what is available today.
Understand your PC
See CPU, memory, drives, GPU, network and system indicators on the home dashboard, with real values when Windows makes the data available.
Maintain with context
Explore cleanup, tweaks, uninstall and restore points. Compatible tools show a preview and ask for confirmation before applying changes.
Explore specialized areas
Diagnostics, internet, security, energy, games, drivers and appearance extend the toolkit. The site clearly marks areas that require Premium.
Windows 11Desktop app made for Windows.
No telemetryPreferences and logs stay on your PC.
SHA-256App update integrity is verified.
Preview firstSee compatible changes before confirming.
Advanced modules · Premium
Eight advanced areasof the app.
Premium modules extend the app with diagnostics and specialized tools. Results come from Windows sources; when a value cannot be confirmed, zkkTools tells you clearly.
Diagnostics
Complete system diagnostics
Full analysis of hardware, Windows and settings, with verifiable information.
Network
Internet
Speed test with a live gauge, browsing performance (DNS, TTFB and initial HTML) and your connection history.
Security
Advanced security
Security Center with local heuristics and checks against known vulnerabilities (CVEs).
Gaming
Game Settings
Detects Steam and Epic games and applies presets (High quality, High performance, Pro and Custom) with backup and SHA-256 hash verification.
Energy
Energy
Power plans, battery and consumption, validated before any change is applied.
System
System checks
TPM, Secure Boot, Windows Update and integrity shown with a verifiable state.
Hardware
GPU Drivers
GPU driver detection, clean reinstall, rollback and a 30-day history.
Appearance
Custom themes
Customize the app's look beyond the Default, Dark and Light themes included in Free.
Available in the app today
Explore the whole app, feature by feature.
Areas already implemented in the current app. Premium features clearly show the required access.
Restore points
Create or check a restore point before important system changes.
Home with real metrics
Six metric rings, system health status and the Apps and Modules hub.
PremiumSystem diagnostics
Complete analysis of hardware, Windows and settings with verifiable information.
PremiumInternet diagnostics
Connection quality and diagnostics to surface relevant network data.
View diagnostics →PremiumAdvanced security
Security Center with local heuristics and known-vulnerability checking.
View security →PremiumEnergy
Battery, plans and power actions with validation before changes are applied.
PremiumSystem checks
TPM, Secure Boot and Windows integrity shown with verifiable status.
Preview-first cleanup
Read-only analysis, selection and confirmation before any removal.
General tweaks
Verifiable optimizations with risk level, preview, rollback and confirmation. High-risk and critical tweaks require Premium.
Uninstall
Remove Win32 and Store apps with confirmation and conservative handling.
My Account
Plan, devices and sync shown after the Google Account is validated.
Settings
Appearance, window, language, behavior, notifications, privacy and updates.
Task Manager (Processes)
Real-time monitoring, process list and system overview.
PremiumGame Settings
Detects installed games (Steam and Epic) and applies presets — High quality, High performance, Pro or Custom — with backup and hash verification.
In development
Upcoming zkkTools areas
These features are planned and not yet part of the current version.
In developmentAdvanced diagnostics
More analysis to clearly identify system state.
In developmentDriver updates
A dedicated area to guide driver maintenance.
In developmentModified BIOS
Planning subject to safeguards, compatibility and explicit confirmation.
In developmentWindows ISO & modification
Planned area to work with Windows images in a guided way.
In developmentDPI & sensitivity
Planned preferences for mouse, controller and games.
In developmentController
Planned settings for compatible controller devices.
In developmentDonation
A planned way to support zkkTools development.
Security & Trust
We build zkkTools around one simple rule: when we can't verify something is safe, we treat it as unsafe — never the other way around. Here are the real mechanisms behind that rule, with the technical details available for anyone who wants to check them.
End-to-end encrypted sync
History is synced between your App devices through the zkkTools backend and sealed with end-to-end encryption before it ever leaves the PC. The web portal has no key and neither decrypts nor displays that content.
Technical details
X25519 (ECDH) key agreement, HKDF-SHA256 key derivation, and AES-256-GCM encryption. CEKs (content-encryption keys) and temporary derived secrets are scrubbed from memory right after use.
Google-only sign-in, no passwords
There's no password to steal: access goes through Google (OIDC + PKCE), and the old password-login endpoint has been permanently retired.
Technical details
The default path is a 12-digit code: you sign in with your Google account on the website and type the code into the app — the app itself never opens a browser or embeds Google's login UI. The legacy password endpoint now returns HTTP 410 Gone.
Updates get verified — or rejected
Every downloaded update has to pass two checks before it's installed. If either one fails, or can't be confirmed, the update is rejected.
Technical details
SHA-256 is checked against the official manifest. When an artifact includes Authenticode, the updater also validates its publisher and revocation status; beta builds may be unsigned, but never lack verifiable hashes and metadata.
Isolated installer, re-verified before it runs
The step that needs administrator rights runs in its own separate, minimal process, isolated from the rest of the app.
Technical details
Only that helper process is elevated via UAC — never the main app. It independently re-checks the hash and version metadata and, when present, the digital signature immediately before installing.
Internal components with verified origin
In signed builds, internal libraries are accepted only when they belong to the expected zkkTools publisher.
Technical details
Signed-build verification confirms the specific zkkTools publisher, not just "any trusted certificate."
Account and session protection
Login attempts are rate-limited to blunt brute-force attacks, and every session is tied to the device that created it.
Technical details
If a session becomes invalid for that device (after a security fix, for example), the app forces a clean re-login instead of silently continuing.
Premium works offline for up to 7 days
Lose the connection to our backend, and Premium features don't abruptly lock.
Technical details
There's a 7-day offline tolerance window before anything degrades, and your local history and data stay accessible regardless of connectivity.
No telemetry, local-first data
Preferences, logs and history live on your PC in plain JSON, written with crash-safe atomic writes.
Technical details
Bug reports open your own email client, pre-filled and with sensitive data stripped out — instead of silently phoning anything home.
Payments never touch the app
Purchases and subscription management happen on the website, through Stripe. The desktop app never handles card data.
This isn't a one-time claim: in September 2026 (v1.1.3) we shipped a security audit that removed a trust flag based on an editable local cache, extended session revocation to the license and device endpoints, and began requiring the correct publisher when verifying internal DLLs. See the full history in the Patch Notes.
Real feedback
What our users say about zkkTools.
Genuine testimonials from people who use the app every day.
Optional access
From account to app,in three steps.
Sign in with your Google Account
Google-only sign-in, no passwords. Your subscription is tied to your account.
Complete the secure payment
Payment happens on the website, through Stripe. The app never handles card data.
The App syncs your plan
The app checks the official account state: Premium is never activated just visually.
Premium features unlock once the payment is confirmed.
Access options
Free accessor Premium.
Review the available options. Prices, billing period and renewal details come from Stripe and appear again before confirmation.
Recurring subscription. Manage your subscription in the account portal. See the Refund Policy.
Full comparison
What is includedin each plan?
Compare Free access with the modules that require Premium. This list reflects features available in the app.
FeatureFreePremium
Real-time dashboard✓✓
Cleanup with preview and quarantine✓✓
Verifiable tweaks with rollback✓✓
Win32 and Store uninstall✓✓
Task Manager (Processes)✓✓
Restore points✓✓
Registry cleanup with .reg backup✓✓
Operational safeguards (allowlist, reparse points)✓✓
100% local data (atomic JSON, no telemetry)✓✓
Controlled actions (never silently disables Defender)✓✓
Themes (default, dark and light), visual scale and high contrast✓✓
Sanitized bug reports✓✓
Automatic updates✓✓
Complete system diagnostics—✓
Internet (speed test, browsing with DNS/TTFB and history)—✓
Advanced security (CVEs + heuristics)—✓
Game Settings (Steam, Epic, 4 presets, SHA-256 backup)—✓
Custom themes—✓
Energy (PowrProf plans, battery, consumption)—✓
Checks (TPM, Secure Boot, Update, integrity)—✓
GPU Drivers (detection, clean reinstall, rollback)—✓
Free is already complete for the basics. Premium unlocks the areas that need deep analysis.
Explore app features See downloads Recurring subscription via Stripe. Price and renewal are shown before you confirm.
Common questions
Questions aboutzkkTools.
Do I need to pay to use zkkTools?
No. Free costs nothing and already includes the real-time dashboard, cleanup with preview, reversible tweaks, uninstall and restore points. Premium unlocks the areas that need deep analysis.
How is Premium activated in the app?
You sign in with your Google Account on the website, complete the payment through Stripe and the app syncs the confirmed plan. Premium is never activated just visually: the app checks the official account state.
Does Premium work offline?
Yes, for up to 7 days. There is an offline tolerance window before anything degrades, and your local history and data stay accessible.
Does zkkTools send my data anywhere?
There is no telemetry: preferences, logs and history stay on your PC. Bug reports open your own email client, with sensitive data stripped out. History synced between devices uses end-to-end encryption. When you use Premium's CVE check, the app sends names and versions of up to 30 programs to zkkTools (the connection also transmits your IP address).
How do I manage my subscription?
Through the account portal on the website. See also the Refund Policy and the full FAQ.
Ready to start?
Explore zkkToolsat your own pace.
Explore the modules, review download options and try Free. Premium is optional and can be activated later.