Who this guide is for
US adults who can see polymarket.com, a polymarket.us tab, and a Polymarket US app and need to know which one is the regulated US desk. This is not how to use Polymarket on mobile, not how to turn on 2FA, not how to complete KYC, and not how to deposit. Those pages are the phone install, the extra login factor, the ID file, and the cashier. This page is only the surface split official help prints — and what to do when a live label does not match that print. Polymarket is the only live outbound here.
What official Website vs App help actually prints
Official Website vs App — What’s the Difference? (June 25, 2026) is the comparison article. Official What is Polymarket US? is the product split (crypto international vs fiat US). We reprint those surfaces. We do not add a US web trading row those pages omit.
polymarket.com — international website, any modern browser
Official Website vs App
Official Website vs App (June 25, 2026): Polymarket.com is for users outside the United States (except other restricted countries). It is accessible on any device with a modern browser — desktop, tablet, or mobile — with no install. Support for that product is support@polymarket.com. The same article’s note: Polymarket.com is not accessible for US residents. US users cannot deposit funds or place trades on the website.
Polymarket US app — the US desk official help names
Official Website vs App + What is Polymarket US?
Official Website vs App: US residents must use the Polymarket US app. That article names the Apple App Store listing for iPhone and says the US product is entirely separate from Polymarket.com. Official What is Polymarket US?: the US product is a fiat, CFTC-regulated designated contract market; the international product is crypto on a chain. Official US Browse Markets and Place a Trade are written for that app (home screen, tap a market, swipe up to confirm). This page does not reprint those click paths.
polymarket.us in a browser — docs, support, developer portal
Named browser uses only
Official Website vs App does not publish a US web trading desk. The .us host we can confirm on public US help is narrower: Official How do I contact support? uses support@polymarket.us; Official docs live at docs.polymarket.us; Official Quickstart and Authentication tell you to visit polymarket.us/developer and sign in with the same Apple, Google, or email method you used in the app — after identity verification — to create an API key. That is a published developer portal, not a second cashier. We will not invent a polymarket.us deposit or Yes/No walkthrough those pages do not print.
Official Website vs App · June 25, 2026 · no invented US Chrome cashier
When to use the website vs the app
Hard rule: if official help names a surface, we name it. If a browser label is not on those pages, we describe the action. Official Place a Trade and Browse Markets assume the US app (home screen, tap, swipe). Official Quickstart is the one public US page that names a polymarket.us browser visit.
Open the US app when you want the regulated US account
US residents → the app
Official Website vs App points US residents at the Polymarket US app. If you are about to finish KYC, turn on 2FA, fund, or trade event contracts in USD, that is the surface official US how-tos describe. Use the claim button on this page so you enter the compliant US on-ramp. The phone-install walkthrough is How to use Polymarket on mobile — this page only answers which product you are looking at.
Open polymarket.com in a browser only if you are not a US resident
International web ≠ US desk
Official Website vs App: no installation required — just visit polymarket.com — and that path is for international users. A US person who opens that URL in Safari or Chrome is not on the US (QCEX) desk. Official help says you cannot deposit or trade there. Do not treat a familiar logo in a browser tab as the account you will fund from Florida or another green-light state.
Open polymarket.us in a browser for help or the named developer portal — not to fund
Describe the action
If you need published US rules, start at docs.polymarket.us. If Official Quickstart applies and you already have a verified US app account, the named browser action is: go to polymarket.us/developer and sign in with the same method as the app. Official Website vs App does not list a retail “Trade on the website” row for US users. If a live browser page shows Deposit, Pay With, or a Yes/No ticket, that is not a US web cashier we can confirm on those pages — stop and return to the US app.
US app to fund · .com is international · .us browser is docs / developer unless help says otherwise
Same account, different labels — only what we can confirm
Two facts sit next to each other. Official Website vs App says the international website and the US app do not share an account. Official Quickstart says a verified US app login can also open polymarket.us/developer with the same method. Labels on those surfaces can still disagree.
.com and the US app are not the same account
Official Website vs App
Official Website vs App: the US app is entirely separate from Polymarket.com — accounts are not connected. Separate products, separate support teams. Signing in on the international website does not open the US fiat desk, and a US app login does not unlock deposit or trade on polymarket.com. If both surfaces show your name or a similar username, that is not proof they share a balance.
The same US login can still print different labels
Help vs live app vs .us browser
Official US contact help and Official US 2FA help name “account settings.” Official Place a Trade names the home screen, a tap, swipe up to confirm, and the Portfolio tab. Official Quickstart names Apple, Google, or email on polymarket.us/developer. Those are the printed words. The live iOS app, a help article, and a browser page can still use Settings, Profile, Security, or another header for the same action. If a label is not on the public US pages we checked, we describe the action and tell you to follow the live control.
Same sign-in method on the developer portal is not a second deposit
Official Quickstart
Official Quickstart: visit polymarket.us/developer and sign in with the same method you used in the app. Official Authentication repeats that warning — switching methods may break API-key access. That is a same-login browser surface for keys, not a published debit / ACH / wire screen. Funding remains How to deposit on Polymarket. We will not clone that rail here.
Accounts not connected on .com · same-method sign-in on the named developer portal · follow live labels
The website-versus-app sequence
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Step 1
Confirm you need the US (QCEX) product — and that your state is open
This split is for a US adult choosing a surface, not for an international crypto account. Official What is Polymarket US?: the US product is fiat, CFTC-regulated, built for US residents. As of our June 2026 check Polymarket was reported unavailable in Arizona, Illinois, Massachusetts, Maryland, Michigan, Montana, Nevada and Ohio. Florida is a green-light state. Confirm the US app still lets you reach account setup before you plan to send money. Age is 18+ with KYC — not the 21+ / 1-800-GAMBLER frame on our DFS pages.
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Step 2
Read the official Website vs App split before you trust a browser tab
Official Website vs App (June 25, 2026): Polymarket.com is the international website; US residents must use the Polymarket US app; the products are separate with separate support teams. Official copy names support@polymarket.com for the website and support@polymarket.us (or in-app chat) for the US app. If the URL in the address bar is polymarket.com, official help says that is not the US deposit-and-trade desk.
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Step 3
Treat polymarket.com in a browser as the other product — US users cannot fund or trade there
Official Website vs App: US users cannot deposit funds or place trades on the website. Official What is Polymarket US? calls that international product crypto on a chain. A mobile-Safari or desktop-Chrome tab pointed at polymarket.com is still that other product. We will not invent a US browser trading path those pages do not publish. The phone-install path, if you need it, is How to use Polymarket on mobile.
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Step 4
Treat polymarket.us in a browser as docs, support, or the named developer portal
Official US pages we checked do not publish a retail US web cashier at polymarket.us. The named browser uses are docs.polymarket.us, support@polymarket.us, and — after you already have a verified app account — polymarket.us/developer with the same Apple, Google, or email method (Official Quickstart). If the live page uses a different header for that developer sign-in, follow the live label. Do not send a debit, ACH, or wire from a browser tab we cannot confirm as the US Fund Your Account screen.
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Step 5
Open the US app for the account you will fund — then stop. This is not a second deposit
Use the claim button on this page so you enter the compliant US on-ramp. That is the only live money CTA here. Identity verification is How to complete Polymarket KYC. The extra login factor is How to turn on 2FA. Debit, ACH, and wire are How to deposit on Polymarket. Official US docs still require KYC before you can deposit or trade. This page only answers which website or app you are on. A publisher link is how this site is supported; it is not extra credit in your account. Event contracts can settle at zero. Nothing here is investment advice.
This is not a second deposit walkthrough
Official Fund Your Account is Profile → Deposit → Pay With, then debit, ACH, or wire from an account in your own name. Limits, instant buying power, and wire instructions stay on How to deposit on Polymarket (US). Official US docs still require KYC before you can deposit or trade, and 2FA is the lock you turn on before you send money. This page will not reprint those rails, hold times, or daily caps. If you came here looking for a cashier, you are on the wrong how-to.
Official How do I contact support? for the US product is in-app chat from account settings, or support@polymarket.us. Official Website vs App sends international website questions to support@polymarket.com. Write the team that matches the surface you are actually on.
Blocked and contested states
Reported unavailable as of June 2026: Arizona, Illinois, Massachusetts, Maryland, Michigan, Montana, Nevada and Ohio. That list is not a promise it stays still — litigation around sports event contracts in particular can narrow or shift access. If you are in a listed state, do not open the US app on the assumption the desk is open, and do not treat polymarket.com as a workaround official help forbids. If you are in Florida or another green-light state, still confirm the US app lets you finish account setup before you send money.
Age is 18+ with identity verification. That is a different gate from the 21+ / responsible-gambling frame on our DFS pages, because these are traded financial instruments. If you also want NFL DFS, start at the picks hub — those cashier rules do not carry over. Compare platforms on the prediction-markets hub.
What you will not get from this page
A dollar welcome match, a paste-this promo code, a US Chrome or Safari trading path official help does not publish, a cloned mobile / 2FA / KYC / deposit walkthrough, live prices, an APK, a newsletter form, or claim buttons for Kalshi, DraftKings, FanDuel, Underdog, Sleeper, PrizePicks, Hard Rock or BetRivers. We could not verify a standing official US welcome bonus on Polymarket’s own terms. Other publishers’ partner codes are theirs; we do not copy them. The honest user-facing line is still US access via CFTC-regulated QCEX — official Website vs App sends US residents to the US app, blocks deposit and trade on polymarket.com, treats .com and the US app as unconnected accounts, and does not publish a US web cashier; a polymarket.us browser tab is docs, support, or the named developer portal unless live help adds a row, and a live Settings / Profile label that is not printed is an action we describe, not a button we invent. Last verified August 8, 2026.
Related reading
US access via CFTC-regulated QCEX — confirm live sign-up terms in-app
CFTC-regulated US exchange (QCEX) · confirm live terms in-app
Affiliate link — we may earn a commission at no cost to you. 18+. Trading involves risk.
Frequently Asked Questions
What does official help say is the difference between the Polymarket website and the US app?
Can a US resident use polymarket.com in Chrome or Safari instead of the app?
When should I open polymarket.us in a browser?
Is my polymarket.com login the same account as the US app?
Why do the website, the help pages, and the app show different labels?
Is this a second deposit walkthrough?
Is this the same as the mobile, 2FA, or KYC how-to?
Does official help name a US Android or US web trading app?
Can I use the US app in every US state?
Is there a Polymarket website-versus-app bonus or promo code on this page?
Is picking the Polymarket website or app the same as opening a DFS or sportsbook app?
Advertising disclosure: Polymarket links are affiliate links — we may earn a commission at no cost to you, which never affects our ratings. Kalshi, DraftKings, FanDuel, Underdog, Sleeper, PrizePicks, Hard Rock and BetRivers have no live outbound claim on this page. Event contracts are CFTC-regulated financial products, not gambling. Trading involves risk and you can lose money, including your entire stake. Not investment advice. 18+. DFS pages on this site use a separate 21+ / 1-800-GAMBLER frame. Availability and terms can change — confirm current terms on Polymarket. Last verified August 8, 2026.