Are Memory Cleaners Safe or a Scam?
Short answer: a memory cleaner that only releases idle pages is low-risk. A "PC optimizer" that kills processes, edits the registry or installs a background service is a different product — and that is where the trouble starts.
Disclosure: we make MemoryCleaner. This page explains how to judge any tool, including ours.
What a memory cleaner can legitimately do
- Show per-app memory usage (a nicer view of Task Manager data)
- Release idle pages back to the OS while leaving apps running
- Trim startup apps or free memory on a schedule
None of this requires administrator rights on a modern Windows system.
What it cannot do
- Make a slow CPU, failing disk or overheating laptop faster
- Fix a memory leak in a third-party app
- "Boost RAM by 300%" — that number is marketing, not physics
Red flags to avoid
- Kills processes without asking. Closing apps can lose unsaved work.
- Registry cleaning / "deep optimization". High risk, no measurable benefit.
- Installs a service or driver. More attack surface and background load.
- Ads for other products, browser extensions, or bundled installers.
- Telemetry you cannot disable — check the privacy policy for what is sent.
- Requires an account or subscription for a local utility.
How to check any tool before installing
- VirusTotal: upload the installer and look for a clean multi-engine report; check the file hash matches the vendor's published hash.
- Publisher info: a real company, a real support address, a real refund policy.
- Permissions: a per-app memory viewer should not need admin rights or network access.
- Try before buying: a 30-day trial lets you verify behavior on your own machine.
How MemoryCleaner fits these rules
- ~2.5 MB, portable — no installer, no service, no driver
- Releases idle memory only; never kills processes silently
- No ads, no telemetry, no account
- $20 one-time for up to 5 devices, 30-day trial
Verify it yourself — 30-day trial, no account.
Download MemoryCleanerMore: Best memory cleaners for Windows 11 · Does freeing RAM actually speed up Windows?