Buy —
Windows optimizer with receipts

Safely tune your whole PC
Gaming, AI workloads, or daily use.

120+ curated tweaks that never touch your security. Every change journaled, every change reversible, and a before/after report that proves what you gained.

One-time purchase · lifetime license · 2 PCs · works offline

Daito's Opti main window: tweak categories with the red Daito theme

Pick a profile. The right set follows.

Every tweak is tagged per profile, so "Select Recommended" always fits what the machine is for.

Gaming

Lower latency, steadier frames

Timer resolution, GPU scheduling, mouse acceleration off, Boost Mode for game sessions, plus a launch-options library for popular titles — with honest warnings where anti-cheat forbids them.

AI & Agents

Throughput for heavy workloads

Power plan and scheduling tuned for sustained CPU/GPU load, standby memory purging, fewer background interruptions — for local models, render queues and long-running agent work.

Balanced

A cleaner, quieter Windows

Debloat without breakage: ads and suggestions off, telemetry down, snappier Explorer — while updates, Defender and everything that keeps you safe stay untouched.

How it works

From checkout to an optimized machine in minutes — with an escape hatch at every step.

Buy

Secure checkout via Lemon Squeezy. EU VAT handled, invoice included.

Key in your inbox

Your license key and download arrive by e-mail, delivered with your order.

Activate

Paste the key once. A System Restore point is created before anything changes.

Optimized — provably

The Prove It report shows before vs. after. Not happy? Revert All puts everything back.

Built to be trusted, not just installed

The core promise: you can see what changed, and you can always go back.

Prove It report

Captures a hardware and performance baseline, then shows exactly what improved after tuning — exportable as an image for the skeptics.

Change journal + Revert All

Every applied tweak lands in a journal with its own undo. One button reverts the entire session — no "what did it even do?"

Boost Mode

Temporary game-session tuning: timer resolution, standby purge and keep-awake — active while you play, gone when you stop.

120+ curated tweaks

Registry, services, power, network, debloat — each with a plain-language description, a risk label, and an honest note when something is situational.

Lifetime license, 2 PCs

One purchase, two machines, hardware-locked without being fragile: one component swap won't eat your activation. Works offline after activation.

Zero telemetry

The app phones home exactly never. Update check and license validation only run when you use them — and the app opens fine without internet.

The safety model

Straight from the app — this text ships inside Daito's Opti, word for word.

"This tool NEVER touches Windows Defender, SmartScreen, UAC, the firewall, CPU security mitigations, boot settings, or Windows Update (pausing restarts is the most it does). Every tweak is reversible or says honestly when it is not. Situational tweaks explain when to skip them; advanced tweaks are excluded from one-click Recommended." — Daito's Opti, Safety Model panel
Prove It report: before and after comparison of system metrics

Questions, answered honestly

Windows shows a SmartScreen warning. Why?

Because the app is not yet signed with a code-signing certificate — those cost hundreds of euros per year and we're a small operation. The warning says "unknown publisher", not "malware". Click "More info" → "Run anyway". The full PowerShell source is readable on your own disk, so you (or anyone you trust) can verify exactly what it does. Code signing is on the roadmap.

What's the refund policy?

All sales are final. Digital license keys are delivered and usable immediately, so at checkout you agree to immediate delivery and waive the EU 14-day withdrawal right, as EU law allows for digital content. Before buying, read the safety model above — and note that every change the app makes can be reverted with one click, so trying it is genuinely low-risk. Something broken on your machine? Mail support and we will fix it with you.

How many PCs can I use it on?

Two. The license locks to a machine fingerprint (hashed — we never see your hardware serials). You can free a slot yourself from inside the app (About → Deactivate) when you replace a PC, and a single component upgrade won't cost you an activation.

Does it work offline?

Yes. Activation needs internet once; after that the app opens instantly with no network check blocking you — airplane mode, LAN party, offline build rig, all fine. Revalidation happens silently at most once a week when a connection happens to be there.

Will it break Windows Update, Defender or anti-cheat?

No. The safety model above is a hard rule in the code: security surfaces are off-limits. For game launch options, titles with strict anti-cheat show a warning instead of options.

What data do you store about me?

The license system stores a hash of your key, hashed hardware identifiers (never raw serials), a short machine hash and activation timestamps. Your e-mail is used for key delivery and support. Full details in the privacy policy.

One price. No subscription.

Lifetime license
one-time · incl. EU VAT where applicable
  • All 120+ tweaks, all three profiles
  • 2 PCs, self-service slot management
  • Prove It reports & change journal
  • Lifetime updates while maintained
  • E-mail support
Buy Daito's Opti

Instant digital delivery · terms · privacy