Is Klavaro Safe? How to Get and Verify the Real Download

Yes, Klavaro is safe to download and use — provided you get the genuine file from an official source. Klavaro is a long-running open-source touch typing tutor by Felipe E. F. de Castro, released under the GPLv3 license and distributed through its SourceForge project, where users rate it 4.7 out of 5 from 35 ratings. The safety question is really about the download: this guide shows where the real files live, how to verify the Windows installer with its published SHA-256 checksum, and why the one Windows warning you will see is a known false alarm. Start from our download page, which links to the official file.

Where the real Klavaro comes from

Klavaro’s official home is klavaro.sourceforge.io, and its files are hosted on the SourceForge project named “klavaro”. That is the complete list of official channels: the Windows installer and the source tarball on SourceForge, packages in Linux distribution repositories (installed with commands like sudo apt install klavaro), and the Homebrew formula on macOS. This site is an unofficial guide, and our download page’s main button points straight at the official SourceForge installer — we also offer a clearly labelled mirror, and publish a checksum so you can verify the file from either source (more on that below). If a site you have never heard of offers “Klavaro premium”, an “activated” version, or a Klavaro phone app, it is not distributing the real program.

Verify your download with SHA-256 (2 minutes)

A checksum is a fingerprint of a file: if even one byte changes, the fingerprint changes completely. For the current Windows installer, the verified values are:

• File: klavaro-3.13-win-setup.exe
• Size: 11,682,715 bytes (about 11.7 MB)
• SHA-256: 6d65d5671b03b4500b14edecf8eb37dd6ad6744b290385a3980172abb3b4ade1

To check your copy on Windows 10 or 11:

1. Open the folder containing the downloaded installer.
2. Right-click in an empty area of the folder and open PowerShell or Terminal there (on Windows 11, right-click and choose “Open in Terminal”).
3. Run this command:

Get-FileHash .\klavaro-3.13-win-setup.exe -Algorithm SHA256

Compare the long string it prints with the SHA-256 above. If they match exactly, your file is byte-for-byte identical to the official installer we verified. If they do not match, delete the file and download again from the official source — do not run it.

Why Windows shows a SmartScreen warning

The first time you run the installer, Windows may display “Windows protected your PC”. This is SmartScreen, and it appears because the installer is not signed with a commercial code-signing certificate — certificates cost money every year, and Klavaro’s developer gives the software away. Unsigned does not mean unsafe; it means Microsoft has no paid signature to check against. The safe way through is: download only from the official source, verify the checksum as above, then click More info and Run anyway. If you skipped the checksum and got the file from an unfamiliar site, the correct response to that warning is to stop. Our Windows setup guide covers the warning in context.

Red flags: fake downloads and fake apps

• “Klavaro” for Android or iPhone. No official mobile app exists. Anything in an app store or APK site using the name is a third-party product trading on it.
• Bundled “download managers”. Portals that make you install their own downloader first are monetising your PC, not distributing Klavaro. The real installer is a single .exe under 12 MB.
• Modified or “cracked” versions. Klavaro is free and open source — there is nothing to unlock, so any “full version free download” framing is a lure.
• Wrong version claims. The current Windows installer is 3.13; the 3.14 release is source code only. A site offering a “Klavaro 3.14 setup.exe” is not offering an official file (see the version guide).

What Klavaro itself does on your computer

Klavaro is an offline desktop program: it needs no account, asks for no sign-up, and keeps your lessons, scores and progress charts on your own machine. Its source code is public under the GPLv3 license, so its behaviour can be inspected by anyone — one reason it is trusted in school labs and on shared computers. Rated 4.7 out of 5 by SourceForge users, it has been in continuous use far longer than most typing software on the market. Download it once, from the right place, verify it, and it is simply a safe, quiet tool for learning to type.

One more check: scan the installer before running it

If you want a second opinion beyond the checksum, scan the downloaded file before running it. In Windows 10 and 11, right-click klavaro-3.13-win-setup.exe and use the “Scan with Microsoft Defender” option built into the system. Multi-engine scanning services on the web offer another angle: they let you submit a file or its SHA-256 hash and see how dozens of antivirus engines assess it. The checksum remains the strongest single check — a matching SHA-256 proves your file is identical to the official installer byte for byte, which no scan verdict can improve on — but a clean scan is a comfortable belt to go with those suspenders.

If your checksum does not match

Do not run the file. A mismatch means one of two things: the download was corrupted in transit (the fix is simply to download again), or the file did not come from the official source and may have been altered (the fix is to delete it and re-download from the official SourceForge source linked on our download page). Either way, the remedy costs two minutes and the installer is under 12 MB. Never “fix” a mismatch by ignoring it — the entire value of the checksum is that a correct one is absolute proof, and an incorrect one is an absolute stop.

Frequently Asked Questions

Is Klavaro a virus?

No. Klavaro is a long-running open-source typing tutor distributed through SourceForge, where users rate it 4.7 out of 5 from 35 ratings. Download the genuine installer from the official source and verify its SHA-256 checksum to be certain you have the real file.

Why does Windows warn me about the Klavaro installer?

SmartScreen warns because the installer is not signed with a paid code-signing certificate, which is common for free open-source software. If your file came from the official source and its checksum matches, choose More info and then Run anyway.

What is the SHA-256 checksum of the Klavaro Windows installer?

For klavaro-3.13-win-setup.exe (11,682,715 bytes), the SHA-256 is 6d65d5671b03b4500b14edecf8eb37dd6ad6744b290385a3980172abb3b4ade1. The steps on this page show how to check your download against it.

Is there an official Klavaro app for Android or iPhone?

No. Klavaro is a desktop program for Windows and Linux (with Mac routes via Homebrew, MacPorts or Wine). Any mobile app using the Klavaro name is a third-party product, not the official tutor.