Support

Getting help

HashCalc is a file and data hashing tool for macOS. For purchase, billing, or download issues, use Apple's support channels for App Store and Mac apps. For questions about what the app does on your Mac, see the description on the App Store and the sections below.

Report an issue

Use this form to send feedback or describe a problem. Include your macOS version and what you were doing in the app when possible.

All fields marked * are required.

Common topics

File access: macOS may prompt for permission to read files or folders you select. Grant access only for locations you intend to hash.
VirusTotal: When enabled, the optional lookup sends only a cryptographic hash to VirusTotal, never the full file. You can use it without a paid API key, though public access is subject to stricter rate limits. To get a free community key, create a VirusTotal account, sign in, and copy the key from your profile menu, or follow VirusTotal's guide. Then paste the key in HashCalc under Options - VirusTotal. Paid plans provide higher quotas.
Keys and settings: If you save them, HashCalc stores only two secrets in your Mac's Keychain (generic-password entries for this app): your HMAC secret when you use keyed hashing, and your VirusTotal API key when you use VirusTotal. Other options and stats are kept in normal app preferences (for example UserDefaults), not in Keychain. Resetting options, clearing app data, or uninstalling follows standard macOS behavior.

Privacy

How data is handled in the app is described in the privacy policy.