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Support

Need help with a go ka app or a tool on this website? Start with the relevant guide below, or email qinqiangji@gmail.com.

Countdown Widget: Any Event

For help adding a widget, follow the Home Screen and Lock Screen guide. For photo backgrounds, see using your own photo. For invitations and shared events, see sharing a countdown.

If a widget looks wrong, tell us which widget and size you added, whether it is on the Home Screen or Lock Screen, and what you see in the app compared with the widget. A screenshot of each view helps.

Smart Invoice & Estimate Maker

For help preparing a document, see how to write an invoice or the invoice, estimate and quote guide. For payment links, read adding a payment QR code.

If an exported PDF or QR code is not working, tell us the document type, the action that failed and any error message. If you attach an example, remove client names, addresses, bank details and other private information first.

BeforeGo

BeforeGo has its own support page, covering guide imports, trip storage and Premium purchases. Its About page explains who makes the app.

Pagewren

For books, backups, moving to a new iPhone and PDF export, visit Pagewren Support. You can also read about Pagewren.

Free web tools and website corrections

Send the full page address, your browser and device, what you tried and what happened. For a calculation issue, include a non-private example and the result you expected. For a factual correction, include the source so we can check it.

Apple purchases and subscriptions

For purchases billed through the App Store, use Apple's subscription settings to manage a subscription, or reportaproblem.apple.com to request a refund. For a missing app unlock, email us the app name and what you see after attempting to restore your purchase. Never send your Apple Account password or payment card number.

Contact go ka

Email qinqiangji@gmail.com. Include the app name or page address, your iPhone or device model, iOS or browser version, app version, and the steps that reproduce the issue. The same address handles questions about our other apps.

Learn about go ka, or read the website privacy policy.

Published 2026-10-30 · Updated 2026-10-30 · go ka

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