# Bytesweep support — install, licences, refunds and contact > Help with Bytesweep: installing on Mac, Windows and Linux, activating and moving a licence key, refunds within 14 days, and how to reach support@bytesweep.app. Canonical: https://bytesweep.app/support.html Last updated: 2026-11-10 ## How can we help? Installing, licences and refunds are answered below. If they are not enough, write to [support@bytesweep.app](mailto:support@bytesweep.app) and a person replies. Updated 16 October 2026 - Install - Licence - Refunds - Contact - Questions ### Install and get started #### Installing on a Mac Bytesweep 3.1 is one universal download for Apple silicon and Intel Macs on macOS 14 or later. - [Which file do I need?](https://bytesweep.app/install.html#which) - [Installing from the DMG](https://bytesweep.app/install.html#dmg) - [Give Bytesweep Full Disk Access](https://bytesweep.app/install.html#fulldisk) - [macOS 11 to 13: Bytesweep 1.x](https://bytesweep.app/install.html#older) #### Linux, Windows and iPhone Bytesweep 1.x for Linux, Bytesweep for Windows, and the separate iPhone app. - [Installing on Linux](https://bytesweep.app/install.html#linux) - [Bytesweep for Windows](https://bytesweep.app/windows.html) - [Bytesweep: Clean & Transfer](https://bytesweep.app/iphone.html) #### When something goes wrong The prompts macOS shows, what they mean, and how to remove Bytesweep completely. - [If something goes wrong](https://bytesweep.app/install.html#trouble) - [Uninstalling](https://bytesweep.app/install.html#uninstall) - [Release notes](https://bytesweep.app/releases.html) ### Licence help One licence per computer, Mac, Windows or Linux. Buying for a team or several computers? Pick how many: each licence comes with its own key. #### How do I activate my licence? 1. **Install Bytesweep** Skip this if you already have Bytesweep installed. 2. **Open Bytesweep and choose Licence** In Bytesweep Pro for Mac it is in Settings (⌘,). In Bytesweep 1.x it is in the sidebar and under the app menu. 3. **Paste the key and choose Activate** Each key activates one computer. Bought several? Use a different key on each computer. #### How do I move a licence to another computer? Open Bytesweep, go to Licence, paste the key. It covers this computer; deactivate it here to move it to another. #### Can I use one key on two computers? Each key activates one computer. Bought several? Use a different key on each computer. #### I can't find my licence key. If you have already bought Bytesweep, your key is in your email — search for Dodo Payments. #### Does my 1.x key work in today’s Bytesweep? Yes. Since 2.0, Bytesweep Pro for Mac is a native Swift app for Apple silicon and Intel Macs on macOS 14 Sonoma or later, and a 1.x licence key activates every version up to 3.x. ### Refunds Not happy? Reply to the receipt email within 14 days for a full refund. See the [refund policy](https://bytesweep.app/refund.html). - Yes, within 14 days, no questions asked. Reply to your receipt email or write to [support](mailto:support@bytesweep.app). - We'll deactivate the license and issue the refund through Dodo Payments, usually within 2 business days. It can take 5–10 business days to appear on your statement depending on your bank. ### Still stuck? Write to us with what you tried and what you saw. For anything about a purchase, include the payment id from your receipt. [support@bytesweep.app](mailto:support@bytesweep.app) ### Questions, answered. #### What does Bytesweep do? Bytesweep finds what is taking space on a Mac, Windows PC or Linux computer and removes it safely, with a 7-day undo. It also monitors CPU, memory and battery, manages startup items, updates your apps, shows which apps can use your camera and microphone, finds duplicates, uninstalls apps with their leftovers and recovers deleted files from USB sticks and SD cards. #### Is Bytesweep safe to use? Yes. Every item passes through one set of safety rules that rate it safe, review first or keep. Only safe items are pre-selected, system folders and your personal folders are never touched by a rule, and most of what it clears goes to a restore point you can undo for seven days. #### Does Bytesweep work on Windows? Yes. Bytesweep for Windows is on the Microsoft Store: a native app for Windows 10 and 11 (64-bit), written in C# and.NET 8. It installs per user without administrator rights and asks for elevation only for the few tools that need it. #### Which Macs does Bytesweep support? Bytesweep 3.1 is a universal app: it runs on Macs with Apple silicon and on Intel Macs, with macOS 14 Sonoma or later. On macOS 13 or older, use Bytesweep 1.x. #### Is there a Linux version? Yes. ByteSweep for Linux comes as a .deb package for Ubuntu, Debian and their family and an .rpm package for Fedora and openSUSE, with the storage analyzer, cleanup for apt, dnf, pacman, zypper, snap and Flatpak, and the same 7-day undo for files. #### Do I need an account or an internet connection? No account. Everything except licence activation, the Updates module and two things you set up yourself, Servers (over your own SSH) and Alerts (off until you add a place), works offline. You receive a licence key by email and paste it into the app. #### Does Bytesweep collect my data? No. There is no telemetry and no Bytesweep server. File names, sizes and history stay in a database on your own disk. Licence activation contacts Dodo Payments, our payment provider. The Updates module contacts only the update sources you switch on, and names each host before it does. #### Can Bytesweep recover deleted files? Often, from USB sticks, SD cards, external drives and disk images, including formatted drives and lost partitions. On Windows it also restores from the Recycle Bin and NTFS drives. It cannot recover fragmented or overwritten files, or files deleted from a Mac's internal SSD, and it tells you which case you are in. #### Is Bytesweep an antivirus? No. It reports the status of the protections built into macOS and Windows, such as Microsoft Defender and the firewall, and links to where you change them. It does not scan for malware. #### How is Bytesweep different from CleanMyMac or CCleaner? Bytesweep is a one-time payment rather than a subscription, runs on Mac, Windows and Linux, keeps a 7-day undo for what it can put back, and names what you would lose before you delete it. It also covers sleep and wake history on Mac and developer caches. See the [full comparison](https://bytesweep.app/compare.html). ### Common storage questions. - [**What is System Data on a Mac?** The ten things inside it and which are safe to clear.](https://bytesweep.app/mac-system-data.html) - [**How to free up space on a Mac** Step by step, largest wins first.](https://bytesweep.app/free-up-space-on-mac.html) - [**Why is Docker using so much space?** Docker.raw, images, volumes and build cache.](https://bytesweep.app/docker-disk-space-mac.html) - [**How to clean up Xcode storage** DerivedData, simulators and device support.](https://bytesweep.app/xcode-storage-cleanup.html) - [**Where are AI models stored?** Ollama, LM Studio and Hugging Face caches.](https://bytesweep.app/ai-model-storage.html) - [**How to find duplicate files** Exact copies and similar photos.](https://bytesweep.app/duplicate-file-finder.html)