MarketBarSupport
Last updated: August 26, 2026
Email support@marketbar.app and a human will answer. There is no ticket system and no bot. Written in English or 简体中文 is equally fine.
Requirements
| Item | Requirement |
|---|---|
| macOS | 14 Sonoma or later |
| Hardware | Apple silicon and Intel |
| Network | Outgoing HTTPS and WebSocket access to Binance's public market data API |
| Account | None. MarketBar has no sign-up and no login. |
Common questions
I can't find MarketBar after installing it
MarketBar has no Dock icon and no window of its own — it lives entirely in the menu bar, to the left of the clock. That is deliberate, not a bug.
If it isn't there, your menu bar is probably full. macOS silently hides items that don't fit, and apps like Bartender or Ice may be hiding it on purpose. Quit a few other menu bar apps, or check your menu bar manager's hidden section.
The prices are greyed out
MarketBar greys out quotes when it hasn't received fresh data for 15 seconds, so you are never shown a stale number that looks live. Usually this means the connection dropped.
It reconnects on its own, backing off gradually between attempts, and it also reconnects after your Mac wakes from sleep. If it stays grey, check whether a VPN, firewall, or proxy is blocking access to Binance.
My price alerts never fire
Alerts are delivered as macOS notifications, so notifications must be allowed. Open System Settings → Notifications → MarketBar and turn on Allow notifications. If MarketBar isn't in that list, create an alert in the app — MarketBar asks for permission the first time it needs to notify you.
An alert fired once and never again
That is by design. An alert fires when the price crosses your threshold, not continuously while it sits above or below it. Otherwise a price hovering near your number would notify you dozens of times.
I changed the language and nothing happened
Language changes take effect after a restart. MarketBar offers to relaunch itself when you switch — accept that, or quit and reopen the app.
Why is there no support for stocks?
Licensing, not difficulty. Crypto exchanges publish official, free, commercially usable market data APIs. Stock quotes generally do not: the free tiers are licensed for personal use only, and showing quotes to other people requires a separate redistribution licence. We would rather ship crypto properly than ship stocks on terms we can't honour.
Where does the data come from?
Binance's public market data API. MarketBar is not affiliated with, endorsed by, or connected to Binance. Prices are shown for information only — nothing in the app is investment advice or a recommendation to buy or sell.
Your data
MarketBar runs inside Apple's App Sandbox and requests exactly one permission: outgoing network access. Your watchlist, alerts, and settings are stored on your Mac and are never transmitted anywhere. You can confirm the permissions yourself:
codesign -d --entitlements - /Applications/MarketBar.app
Full details are in the privacy policy.
Uninstalling
Drag MarketBar from your Applications folder to the Trash. Everything the app saved lives in one sandbox container, which you can delete too:
~/Library/Containers/com.yiyuqian.MarketBar
Nothing is left anywhere else, and nothing needs to be cancelled or deactivated.
Reporting a bug
Email support@marketbar.app. These four things make a fix much faster:
- Your macOS version and whether your Mac is Apple silicon or Intel
- The MarketBar version — right-click MarketBar in your Applications folder, choose Get Info, and read the line marked Version
- What you expected to happen, and what happened instead
- A screenshot, if the problem is something you can see
Feature requests are welcome at the same address.