Polypane vs Sizzy (2026): which should you pick?
As of Nov 13, 2026, Polypane grades higher than Sizzy: 2.0 against 1.6 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Polypane grades higher on the free plan. They get the same grade on value for money, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Polypane
Chromium-based browser for web developers, with synced viewports
Which one is for you
Pick Polypane if
- Fits if you build websites and want to see mobile and desktop widths side by side
- Works for developers who need accessibility checks while they build
Look elsewhere if
- Not for you if you want an everyday browser, as it's a developer tool
- Tight if you want a free plan, because after 14 days it's a paid subscription
- Watch out: Business covers 2 to 20 seats, and larger teams go through sales
- Watch out: it runs on Windows, Mac and Linux only, with no iOS or Android version
Pick Sizzy if
- Fits if you are a front-end developer who wants every device in one workspace
- Works for developers who run coding agents next to the preview
Look elsewhere if
- Skip it if you want to try before paying, as there is no free plan and no trial
- Pricey if you want a free option, as free tools like Responsively cover device previews
- Watch out: coding agents run through your own Claude Code or Codex CLI, billed by those providers
- Not for you if you want a phone app, as it is desktop only
How we grade them
| 2.0GPAPolypaneFair | 1.6GPASizzyWeak | |
|---|---|---|
| Value for money | CIndividual is $9 a month billed yearly ($12 monthly), which is the middle of this category's price range. Business is $12 a seat. | C$12 a month billed yearly, between the category's $10 middle and $19.99 dearer quarter. Lifetime is $499, over two years of a typical $10 a month. |
| Free plan and trial | CA 14-day trial with full access and no card needed. There's no free plan. | FNo free plan and no free trial on the pricing page. |
| Features | CSynced viewports, device emulation and accessibility and metadata panels do the developer job fully, but it's a smaller job than a general browser. | CDevices on one canvas, project workspaces, isolated sessions, a debug panel, screenshots and terminals. It is a developer tool, and the coding agents need separate CLIs. |
| Ease of use | CNo store rating on record. It's a developer tool with panels and layouts to learn. | CNo store rating on record, and projects, sessions and agent CLIs take setting up. |
| Platforms and integrations | CWindows, Mac and Linux only, with no iOS or Android version. | CDesktop only: macOS, Windows and Linux, linking GitHub, Vercel, Coolify, Claude Code and Codex. |
| Best for | checking a website on many screen sizes at once | a developer browser with synced device previews |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Polypane and Sizzy. How we grade
Price against what you get
Polypane starts at $9 a month and scores 2.0 out of 4 on features, ease of use and platforms. Sizzy starts at $12 a month and scores 2.0.
They score the same, and Polypane starts $3 a month lower. Of the other browsers on the chart, 30 score higher than Polypane for less, and 31 score higher than Sizzy for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Sizzy can be bought with a one-time purchase.
- Polypane also covers site audit.
- Sizzy also covers screen recording and screenshots.
At a glance
| Polypane | Sizzy | |
|---|---|---|
| Pricing | Free trial | Paid |
| Starts at | $9 per month, billed yearly ($12 billed monthly) | $12 per month, billed annually ($15 billed monthly) |
| Free plan | None | None |
| Free trial | 14 days with full access to every feature, no credit card needed. | None listed |
| macOS | ||
| Windows | ||
| Linux | ||
| Made by | Polypane | Kitze |
| Price read from | polypane.app | sizzy.co |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Polypane
- There is no free plan; the 14-day trial is followed by a paid subscription.
- Prices on the page are shown including tax.
- It is a developer tool and has no iOS or Android version.
- Business is sold for 2 to 20 seats; larger teams go through sales.
Sizzy
- There is no free plan and no free trial on the pricing page.
- Coding agents run through the Claude Code or Codex CLI you install, and those providers bill model usage under your own plan.
- It is a desktop developer tool for macOS, Windows and Linux, with no mobile version.
- Checkout and licenses are handled on a separate portal site, and the page says regional pricing is shown at checkout.
Key features
Polypane
- Synced viewports
- Mobile to 5K viewports show at once, and scrolls, clicks, hovers and keystrokes sync across all of them.
- Device emulation
- Emulation covers user agent, touch events, locale and safe-area insets as well as viewport size.
- Accessibility and site checks
- Panels report on structure, metadata and accessibility while you build.
- Chromium base
- It is based on Chromium 155 and updated roughly every two months.
- Recent additions
- Polypane 31 added a Canvas layout, and version 30 added Playgrounds, which open directories as HTTPS URLs.
Sizzy
- Devices on one canvas
- Real device sizes and user agents sit side by side, and scrolling, clicks, typing and navigation stay in sync until sync is switched off.
- Project workspaces
- Each project keeps its URLs, devices, sessions, notes, snippets and terminals, plus its repo path, dev command and editor.
- Isolated sessions
- Cookies, cache and storage are kept separate per session, so you can test as an admin, a customer and a guest at once.
- Debugging panel
- One console for all devices, docked Chromium DevTools, storage and CSS editors, request headers and an API client.
- Screenshots and Photo Studio
- Capture one device or all of them, full page or framed, and record video or GIF of the canvas.
- Terminals and coding agents
- Run dev commands and hand tasks to the Claude Code or Codex CLI already on your machine.
Plans
Polypane
Individual$9
per month, billed annually ($12 billed monthly)
One person, personal and commercial use, on up to 3 personal devices, with email support. $108 billed yearly.
Business$12
per seat / month, billed annually ($16 billed monthly)
2 to 20 seats on one subscription, 3 computers per user, central billing and chat support. $288 a year for 2 seats.
EnterpriseCustom
For typically 20 or more seats: single sign-on and SCIM, custom billing and onboarding. Sold through sales.
Sizzy
Monthly$15
per month, billed monthly
Every feature of Sizzy, billed monthly and cancelable at any time.
Annual$12
per month, billed annually ($15 billed monthly)
Every feature, billed $144 once a year; the page says this saves 20% against monthly.
Lifetime$499
one-time
One payment, with future updates included and every feature unlocked.
Ways to pay less
Polypane
- Annual discount
3 months free with yearly plans
The pricing page says yearly plans include 3 months free: $9 a month billed yearly against $12 billed monthly.
Sizzy
- Annual discount
Annual billing saves 20%
The pricing page says the annual plan, $144 billed once a year, saves 20% compared with monthly billing.
- Lifetime license
Lifetime license
A $499 one-time payment includes future updates, as stated on the pricing page.
Common questions
Which is cheaper, Polypane or Sizzy?
As of Nov 13, 2026, Polypane is cheaper to start with: $9 a month, against $12 a month for Sizzy. Polypane starts at $9 per month, billed yearly ($12 billed monthly), and Sizzy starts at $12 per month, billed annually ($15 billed monthly).
Which has a free plan, Polypane or Sizzy?
As of Nov 13, 2026, neither Polypane nor Sizzy has a free plan. Polypane has a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.