The SigmaOS Insider’s Guide
Everything we know about SigmaOS in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
SigmaOS
The Insider’s Guide
Mac browser with vertical tabs, workspaces and an AI assistant
Every plan, grade, refund rule and rival among browsers, read from SigmaOS’s own pages.
Made by SigmaOS, Inc. · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from SigmaOS’s own pages, its app-store listings and our grades. Every fact in it is on SigmaOS’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 17 of the 60 other browsers we grade
SigmaOS is a browser for macOS built on Apple's WebKit engine that also supports Chromium extensions. It uses vertical tabs and workspaces, treats tabs like tasks you can mark done, and has single-key shortcuts, split screen and an AI companion called Airis. A free Personal plan exists, and a paid Pro plan adds unlimited Airis use.
To get you started, here are 9 things to know about SigmaOS, taken from its own pages and our grades.
Workspaces, profiles and keyboard-first search take some learning.
- 1
Best for a Mac browser with vertical tabs and an AI helper
SigmaOS is a Mac browser with vertical tabs, workspaces and an AI assistant called Airis.
- 2
Paid plans start at $20 a month
As its pricing page puts it: $20 per month (Pro).
- 3
There is a free plan
SigmaOS Personal is described as free forever; unlimited Airis AI usage is a Pro feature.
- 4
It runs on macOS
macOS.
- 5
Workspaces and vertical tabs
Tabs are kept in separate workspace lists down the side of the window, and a workspace can use separate profiles to sign in to different accounts.
- 6
Tabs as tasks
Tabs can be marked as done when finished or locked to a workspace to keep them.
- 7
Lazy Search
Pressing the spacebar searches across open tabs, the web, commands and bookmarks.
- 8
A 2.4 GPA, above 17 of 60
That is against the other browsers we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace SigmaOS you would be making a web browser. That is not a weekend's work, with an AI app builder or without one.
SigmaOS at a glance
- Pricing
- Free plan, from $20 per month (Pro)
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- macOS
- Made by
- SigmaOS, Inc.
- Category
- Browsers
- Our grade
- 2.4 GPA, fair
The report card
Best for a Mac browser with vertical tabs and an AI helper
SigmaOS is a Mac browser with vertical tabs, workspaces and an AI assistant called Airis. The browser is free, but unlimited Airis needs Pro at $20 a month, and it runs only on macOS.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | The Personal plan is described as free forever, so the browser costs nothing. Unlimited Airis needs Pro at $20 a month, which is where this category's dearest tenth starts. |
| Free plan and trial | B | A free-forever plan one person could live on, with the AI helper limited rather than missing. |
| Features | C | Workspaces, vertical tabs, search across tabs and an ad blocker. Unlimited AI use is Pro only, and the help docs list an older Pro price of $10 against the homepage's $20. |
| Ease of use | C | No store rating on record. Workspaces, profiles and keyboard-first search take some learning. |
| Platforms and integrations | D | macOS only. The FAQ says iOS and Windows support are coming. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who SigmaOS is for
- Fits if you live on a Mac and want tabs down the side in separate workspaces
- Works for people who want an assistant that answers questions about the page
Who it is not for
- Not for you if you use Windows or Linux, as it runs on macOS only
- Pricey if you want unlimited AI, which needs Pro at $20 a month
- Watch out: the help docs list an older Pro price of $10 a month, against $20 on the homepage
- Watch out: iOS and Windows versions are described as coming, and pages on the site carry a 2024 copyright notice
Good to know
Good for
- Mac users who want vertical tabs and workspaces
- People who like single-key keyboard navigation
- Students and educators, who the site says get 50% off Pro
Worth knowing
- It runs only on macOS; the FAQ says iOS and Windows support are coming.
- Unlimited Airis usage needs the paid Pro plan.
- The company's help docs list an older Pro price of $10 per month ($8 billed yearly); the homepage FAQ says $20 a month. Check the price in the app before buying.
- Pages on the site carry a 2024 copyright notice.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$20
A month to start. There is a free plan too
SigmaOS has a free plan. Paid plans start at $20 per month (Pro).
The Personal plan is described as free forever, so the browser costs nothing.
Personal
$0
The browser for macOS, free, without unlimited Airis AI usage.
Pro
$20
per month; billing basis not stated on the page
Unlimited Airis usage. The site says Pro starts at this price and gives students and educators 50% off.
The free plan
SigmaOS Personal is described as free forever; unlimited Airis AI usage is a Pro feature.
Read from sigmaos.com on Nov 12, 2026.
Ways to pay less
Education
50% off Pro for students and educators
The homepage FAQ says students and educators are eligible for a 50% discount on SigmaOS Pro.
Stated on sigmaos.com
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: macOS
Mac browser with vertical tabs, workspaces and an AI assistant. Here is what it does, as its own site describes it, and what it covers: AI features, keyboard-first, web browser, ad and tracker blocking.
Workspaces, vertical tabs, search across tabs and an ad blocker.
- Workspaces and vertical tabs
- Tabs are kept in separate workspace lists down the side of the window, and a workspace can use separate profiles to sign in to different accounts.
- Tabs as tasks
- Tabs can be marked as done when finished or locked to a workspace to keep them.
- Lazy Search
- Pressing the spacebar searches across open tabs, the web, commands and bookmarks.
- Airis assistant
- The AI companion can answer questions about the page you are on, search the web and read several pages at once, and a Simplify view summarizes a page.
- Ad blocker and Focus Mode
- A built-in ad blocker is included, and Focus Mode hides everything except the current page.
- Chromium extensions
- The FAQ says SigmaOS is a WebKit browser that also supports Chromium extensions.
Where it runs
- macOS
What it works with
- Apple Keychain
- 1Password
- Bitwarden
- Dashlane
- LastPass
SigmaOS is made by SigmaOS, Inc.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
17/60
Other browsers it is graded above
SigmaOS's GPA of 2.4 is higher than 17 of the 60 other browsers we grade, and level with 2.
It stands best on value for money (A, above 22 of 60) and worst on platforms and integrations (D, above 0).
Its paid plans start at $20 a month, against a middle price of $9.50 for the category: 16 of the 19 others that charge start lower.
On features, ease of use and platforms it scores 1.7 out of 4. 47 tools score higher and cost less.
Each grade against the category
Every bar is all 61 browsers we grade, cut by the letter each got. SigmaOS’s own letter is outlined.
- AValue for moneyAbove 22 of 60
- BFree plan and trialAbove 15 of 60
- CFeaturesAbove 2 of 60
- CEase of useAbove 5 of 60
- DPlatforms and integrationsAbove 0 of 60
Price against what you get
Each dot is one of 54 browsers. Further left costs less; higher up scores better on features, ease of use and platforms. SigmaOS is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace SigmaOS you would be making a web browser. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 41 of the 60 other browsers grade higher. It costs $240 a year.
What you could make
- Ad and tracker blocking: an app builder makes this well.
What you could not
- A web browser.
- A real app for macOS. Something home-made would be a web page.
- It plugs into other products, Apple Keychain, 1Password and Bitwarden among them.
- AI features, unless you pay a model provider for each request yourself.
What this rests on. SigmaOS’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Arc, Zen Browser, Dia, Orion and Vivaldi
The 5 tools SigmaOS is most often weighed against, with where each one differs from it.
- 3.4GPA
Arc
Free
Chromium-based browser with Spaces, Profiles and Split View.
- Only Arc lists Windows, iOS and Android apps.
- SigmaOS also covers ad and tracker blocking.
- 2.8GPA
Zen Browser
Free
Free, open-source desktop browser built around vertical tabs.
- Only Zen Browser lists Windows and Linux apps.
- Zen Browser is open source, according to its own site.
- SigmaOS also covers ad and tracker blocking.
- 2.0GPA
Dia
Free plan · from $10/mo
AI browser for work that answers questions across tabs and tools.
- Only Dia lists a Windows app.
- Dia is end-to-end encrypted, according to its own site.
- SigmaOS also covers ad and tracker blocking.
- 3.0GPA
Orion
Free plan · from $5/mo
WebKit browser from Kagi that runs Chrome and Firefox extensions.
- Only Orion lists iOS and Linux apps.
- SigmaOS also covers ad and tracker blocking.
- Orion also covers password manager.
- 3.8GPA
Vivaldi
Free
Customizable browser with built-in mail, calendar and feed reader.
- Only Vivaldi lists Windows, Linux, Android and iOS apps.
- Vivaldi is end-to-end encrypted, according to its own site.
- SigmaOS also covers ad and tracker blocking.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
14
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is SigmaOS free?
SigmaOS has a free plan. SigmaOS Personal is described as free forever; unlimited Airis AI usage is a Pro feature.
How much does SigmaOS cost?
SigmaOS lists 2 plans. Personal: $0.
What platforms does SigmaOS work on?
SigmaOS is available on macOS.
Does SigmaOS offer any discounts?
SigmaOS publicly lists the following: 50% off Pro for students and educators.
Does SigmaOS have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. SigmaOS is listed for macOS.
Does SigmaOS have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. SigmaOS is listed for macOS.
Is SigmaOS open source?
SigmaOS is not described as open source on its own site, as read on Nov 12, 2026.
What does SigmaOS integrate with?
SigmaOS's listing names Apple Keychain, 1Password, Bitwarden, Dashlane and LastPass.
Does SigmaOS have a student discount?
50% off Pro for students and educators. The homepage FAQ says students and educators are eligible for a 50% discount on SigmaOS Pro.
Who makes SigmaOS?
SigmaOS is made by SigmaOS, Inc.
What are the alternatives to SigmaOS?
The closest alternatives to SigmaOS in our directory are Arc, Zen Browser, Dia, Orion and Vivaldi.
How does SigmaOS compare with other browsers?
SigmaOS's GPA of 2.4 is higher than 17 of the 60 other browsers we grade, and level with 2.
Is SigmaOS good value for money?
ToolGPA grades SigmaOS A for value for money. Its paid plans start at $20 a month, against a middle price of $9.50 for the category: 16 of the 19 others that charge start lower.
Could I make my own version of SigmaOS?
To replace SigmaOS you would be making a web browser. That is not a weekend's work, with an AI app builder or without one.
Where this guide comes from
The prices, plans, platforms and features were read from SigmaOS’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from SigmaOS's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by SigmaOS, Inc. Prices change, so check sigmaos.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- SigmaOS, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/sigmaos
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "SigmaOS: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/sigmaos
Know someone choosing between browsers?
Send them this guide: toolgpa.com/tools/sigmaos/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded browsers after SigmaOS, each with an Insider's Guide of its own.
- Browsers Insider's GuideEvery one of the 61 browsers we grade, compared
- Brave Insider's GuideOpen-source browser that blocks ads and trackers by default3.8 GPA
- Firefox Insider's GuideFree, open-source browser from Mozilla with tracker blocking built in3.8 GPA
- Vivaldi Insider's GuideCustomizable browser with built-in mail, calendar and feed reader3.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what SigmaOS’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. SigmaOS is a trademark of its owner, and this guide is not made, paid for or approved by SigmaOS, Inc. Prices and plans change: check sigmaos.com before you buy.