What isn't there yet

Acira is a beta. This page lists what is missing, what is different from other browsers, and what works in part, so you know before you rely on it. Where a limit has a workaround, the page says so.

By design

These are choices, not gaps that are waiting to be filled.

No account and no cloud sync. Your bookmarks, history, passwords, settings and open tabs stay on your computer. They do not sync to another computer or phone. See Where your data lives for how to export and move them.
No VPN of its own. Acira can control a VPN app you already have. See DNS, proxy and VPN.

Agents are different. This beta has no agents and no AI features, but agents are planned, and you will be able to turn them off and use Acira as a normal browser. AI-free mode hides AI answers and buttons on supported websites.

Platforms

Not available	Detail
Linux on Arm	The Linux build is an x86_64 AppImage for 64-bit Intel and AMD processors. There is no Arm64 Linux build. So far the Linux build has been tested on Ubuntu 24.04 only, and it isn't signed.
Phones and tablets	There is no iOS or Android version, and nothing to pair with a phone.
Windows on Arm	There is no Arm64 build for Windows. The installer is for 64-bit Intel and AMD processors. Windows 11 on Arm can run x64 programs through emulation, but Acira has not been checked that way.
Older Windows	Windows 7, 8 and 8.1, 32-bit Windows and Windows 10 builds before version 1809 are not supported. The installer refuses Windows 7, 8, 8.1 and 32-bit Windows.
Older macOS	macOS 13 or later is required.
A physical Intel Mac check	The Intel Mac build has been run under Rosetta on an Apple silicon Mac. It has not yet had a separate check on a physical Intel Mac.
Glass window on older Windows	The see-through glass window needs Windows 11 version 22H2 or later. On Windows 10 and earlier Windows 11 versions, the window is solid.

The supported systems are Windows 11, or Windows 10 version 1809 or later, on x64, and macOS 13 or later on Apple silicon or Intel.

Signing and trust

Platform	Status	What it means
Windows	Not code-signed	Windows shows an unknown-publisher warning. You can continue with More info, then Run anyway. With Smart App Control turned on, Windows can block the installer outright, and Acira cannot run until you change that setting. Acira checks updates against a SHA-512 value, because Windows cannot check a publisher.
Mac	The latest Mac downloads are Developer ID signed, Apple-notarized and stapled	macOS may ask you to confirm opening an app downloaded from the internet. Older releases may not be notarized; use the latest installer from the download page.

See Troubleshooting and Updates and verifying downloads.

Protected video

Windows and Mac: supported builds prepare Widevine automatically when you are online. Whether a service plays, and at what quality, depends on the service, your account, your display and your device. Acira does not promise that every service plays, or that you get 4K.

See Engine and web compatibility.

Passkeys and security keys are off by default. Turn them on in Settings › Privacy › Passkeys and security keys, then reload open pages.
iCloud passkeys on a Mac are not available yet. Apple's authorization for browsers is still pending, and no real passkey sign-in has been verified through it.
No Google account in the browser. Websites that offer Google sign-in work as websites, and a site's Continue with Google button opens Google's own sign-in window. Acira does not sign you in to Google for you, and extensions cannot ask for a Google account token.

See Passwords and passkeys.

Tor

Tor tabs and windows hide your IP address from sites. They are not the same as Tor Browser.

Your browser fingerprint is not hidden. Acira does not offer the fingerprint resistance of Tor Browser. For the strongest protection, use Tor Browser.
Extensions are off in Tor tabs and windows.
Files you download can connect to the internet when you open them, and that happens outside Tor.
The initial connection is slow. It can take a minute or two. Networks that block Tor need a bridge, which is slower. Bridges are available in Settings › Connection, so they are not a gap. See Troubleshooting.
Keeping Tor items is opt-in. Tor keeps nothing by default. If you turn on Keep Tor bookmarks and tabs, Acira keeps bookmarks and tab addresses and titles, and nothing else.

See Tor tabs and windows.

Locked workspaces (beta)

The default workspace, the one every profile starts with, cannot be locked.
A locked workspace's name and icon stay visible.
Locking pauses a workspace's pages as far as the engine allows. A page can keep some background scripts running.
Keeping the window out of screen capture is not guaranteed either. On a Mac, macOS screen capture can still see it.
Locking does not protect you from malware that runs as you, and it does not cover your computer's memory or page file.
A site you visited before you locked the workspace stays in your normal history.
A file downloaded from a locked workspace is listed as private, but the saved file itself is an ordinary file.
Locking a workspace unpins its pinned tabs and drops its list of closed tabs.
Extensions do not run in a locked workspace.

See Locked workspaces.

Extensions

Chrome Web Store and unpacked folders. Acira installs from the Chrome Web Store and from an unpacked folder. It cannot install a .crx file from disk, and it does not install Firefox add-ons.
Manifest V3. Manifest V2 extensions were not checked, and Acira does not offer them when you bring extensions from another browser.
A subset of Chrome's APIs. Some extensions, such as React Developer Tools, do not work. Some, such as Tampermonkey and Violentmonkey, work with limits.
No automatic store updates. Use Check for update on the extension.
Off in private windows, Tor and locked workspaces.

See Building and testing extensions.

Web features

Not available	Detail
View source	There is no View page source row and no `Ctrl+U`. Use developer tools.
Browser internal pages	`chrome:`, `about:`, `file:` and `view-source:` addresses do not open from the address bar.
Extension panels in developer tools	They do not appear.
USB, HID, serial and Bluetooth	Websites cannot connect to these devices. Acira shows no device chooser.
Page translation	Not built in. A translation extension from the Chrome Web Store can do it.
Address and payment card autofill	Acira saves passwords. It does not save addresses or payment cards.
A task manager	There is no page that lists and stops tabs by memory use.
Search suggestions from a search engine	Address bar suggestions come from your own tabs, bookmarks and history. What you type stays on your computer until you search.
Per-site third-party cookie rules	Third-party cookies are one setting for the whole browser, and a change applies after a restart.
Location	Sites ask before they use your location. Acira has not verified that sites receive a position after you allow it, so location features may not work in this beta.

See Developer tools and Engine and web compatibility.

Everyday features

Not available	Detail
Importing from Safari	Acira reads Chrome, Edge, Brave, Helium, Arc, Firefox and Zen. Bookmarks from another browser can also come in as an HTML file. Cookies and sign-ins are never copied, and passwords come from a CSV file you export. See Bring your data.
Importing Acira's own exports	You can import an exported bookmarks file and a passwords CSV. Acira has no import for the profile data file or the shortcuts file.
Pull requests from other places	The Pull requests folder reads github.com only. GitHub Enterprise Server and other hosts are not supported. It reads GitHub's own search page, so a change on GitHub's side can leave it showing Can't read GitHub right now. See Sidebar.
A shortcut preset	You can change any shortcut. There is no preset that switches the whole set to another browser's keys. See Keyboard shortcuts.
Some Mac default shortcuts	A few keys that Settings lists as defaults on a Mac, such as `Option+Left` for Back, do nothing until you assign them. The same page lists the Mac keys that work.
Reviewed translations	The interface is translated into 12 languages besides English. Native speakers have not reviewed the translations yet.

Last updated November 8, 2026