Nimply Sidekick · App Store
Safari extensions are delivered differently: through the App Store, inside a small app, with no sidebar to dock into. Sidekick’s Safari build is designed around that, and keeps every one of the same rules.
The button becomes a link the day the App Store listing is approved. Nothing on this site links to a listing that does not exist yet.

Where it appears
Safari has no side panel and no sidebar for extensions, on the Mac or on iPhone. So Sidekick uses two surfaces there: a popup from the toolbar icon for the quick actions, and a full-page tab of its own for longer flows such as reviewing a capture or writing a draft. What it does not do is put its interface on the page itself. Injecting a panel into a website would have been the easy fix, and it is the one thing Sidekick never does in any browser.
Also covers
The first App Store release is for Safari on macOS. The same popup works in Safari on iPhone and iPad, but iOS has no right-click menu, so the toolbar button and the keyboard shortcut would be the only ways in, and an iOS release needs its own review and screenshots. The App Store listing states exactly which devices it supports; this page will say so as well when that changes.
Install
Five steps, most of them one click. You sign in with the Nimply account you already have; there is no separate Sidekick account.
Use the button on this page. It becomes a link once Apple’s review is complete; until then it says “Coming soon”. What you download is a small app whose only job is to carry the Safari extension; it has no interface of its own beyond a button that opens Safari’s extension settings.
Open Nimply Sidekick from your Applications folder and follow its one button to Safari. In Safari, open Settings, choose Extensions, and tick Nimply Sidekick.
Safari may ask whether to allow the extension on a website the first time you click its icon there, for one day or always. Either answer is fine: Sidekick reads a page only when you click, whatever Safari’s setting says.
Safari does not give extensions a dedicated sign-in window, so signing in opens a normal Safari tab on nimply.io. Sign in with your existing Nimply account, choose your workspace, and the tab hands you back to the extension.
Click the toolbar icon for the popup, right-click a post, link or image on the Mac and choose the Nimply entry, or press Alt+Shift+S. Longer steps open in Sidekick’s own tab; switch back to the page whenever you like.
What is different
The extension does the same things everywhere. These are the parts that Safari handles in its own way.
Safari does not install extensions from a download. Every Safari extension is packaged inside a Mac app, built and signed with Apple’s tools and reviewed through App Store Connect. That is why the Safari button here points to the App Store rather than to an extension gallery.
The popup closes when you click away from it, so it is for quick actions. Reviewing what was read, choosing a board, and drafting happen in Sidekick’s full-page tab. That tab does not sit beside the post the way a panel does; you switch between the two.
Safari has no built-in extension sign-in window, so Sidekick signs you in through an ordinary tab on nimply.io and returns you afterwards. It is the same sign-in as everywhere else, in a different window.
Without a side panel or a sign-in window, the Safari build asks for four permissions: activeTab, scripting, storage and contextMenus, plus access to nimply.io. On iPhone and iPad there is no right-click menu at all, so that part simply does not appear there.
Same rules in every browser
The Safari build keeps every limit the other builds have. They are in the design, not in the settings. Read the full list or the extension privacy policy.
Sidekick works with the Nimply account you already have. Create one free, connect your channels, and it is ready the day the App Store listing goes live.