Browser Extensions · head to head
Stay vs Userscripts

Stay
Browser Extensions
Safari userscript manager that runs Tampermonkey scripts
- From
- Free
- Rated
- -

Userscripts
Browser Extensions
Open-source userscript manager for Safari on Mac and iOS
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Stay apple only. No Chrome, Firefox or Edge build, so it cannot serve a cross-browser workflow.; Userscripts safari cannot let extensions bypass a site's Content Security Policy, so strict sites produce "Refused to execute a script" errors that the @inject-into workaround does not always fix.
- They diverge on capability: Stay covers Tampermonkey and Violentmonkey compatibility, Userscripts covers Built-in script editor.
- Prices and features above were last checked on 15 September 2026.
Where they differ
Only the attributes on which Stay and Userscripts actually diverge.
| Attribute | Stay | Userscripts |
|---|---|---|
| Pricing model | one-time | open-source |
| Platforms | Safari, iOS, macOS | Safari, macOS, iOS |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Stay
- Tampermonkey and Violentmonkey compatibility
- Userscript management
- Cross-device bookmark sync
- Download manager
- Dark mode
- One-time purchase across platforms
Only in Userscripts
- Built-in script editor
- Standard metadata support
- GM API
- Remote script updating
- iCloud sync
- Per-page popup
What people use each for
The jobs each tool is most often brought in to do.
Stay
- Running Tampermonkey scripts on Safarinot Userscripts
- Running userscripts on iPhone and iPadnot Userscripts
- Syncing bookmarks across Apple and non-Apple devicesnot Userscripts
- Managing downloads into categorised folders on iOSnot Userscripts
- Forcing dark mode on sites that do not offer itnot Userscripts
Userscripts
- Running userscripts on Safari without paying for Tampermonkeynot Stay
- Running userscripts on an iPhone or iPadnot Stay
- Writing scripts on a Mac and syncing them to iOSnot Stay
- Blocking or restyling site elements Safari content blockers cannot reachnot Stay
- Keeping a script library under an open-source licencenot Stay
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Stay
- Apple only. No Chrome, Firefox or Edge build, so it cannot serve a cross-browser workflow.
- The free tier is deliberately limited, so the practical product is the paid one.
- Compatibility with Tampermonkey and Violentmonkey scripts is a translation layer rather than the real thing, and a script relying on an unusual GM function may not behave identically.
- It bundles bookmark sync, downloads and dark mode alongside the script manager, which is more surface area than some people want from an extension with access to every page.
- A much smaller project than the established managers, so fewer scripts are tested against it.
Userscripts
- Safari cannot let extensions bypass a site's Content Security Policy, so strict sites produce "Refused to execute a script" errors that the @inject-into workaround does not always fix.
- Apple only. There is no Chrome, Firefox or Edge build, so it cannot be a cross-browser answer.
- iCloud sync is documented as having delays, which is awkward when editing the same script on two devices.
- Requires macOS 12 and Safari 14.1, or iOS 15.1, so older Apple hardware is excluded.
- GPL v3 means a commercial licence is required for non-open-source use, which matters if you are embedding rather than just using it.
Pricing, plan by plan
Stay
Free- FreeFree
- Limited functionality
- Lifetime$5/one-time
- All features
- iPhone, iPad and Mac
- Lifetime updates
Userscripts
Free- FreeFree
- Full functionality
- GPL v3 licensed
- macOS, iOS and iPadOS
Which should you pick?
Choose Stay if
- You need tampermonkey and violentmonkey compatibility.
- You want to start without paying.
- You work on Safari, iOS, macOS.
- You also want userscript management.
Choose Userscripts if
- You need built-in script editor.
- You want to start without paying.
- You work on Safari, macOS, iOS.
- You also want standard metadata support.
Questions people ask
- Is Stay or Userscripts better?
- Neither clearly leads. Stay starts at Free and Userscripts at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Stay or Userscripts?
- Stay starts at Free and Userscripts at Free.
- Does Stay or Userscripts run on more platforms?
- Stay runs on Safari, iOS, macOS. Userscripts runs on Safari, macOS, iOS.
- Can I use Stay for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Stay best used for?
- Stay is most often used for running tampermonkey scripts on safari, running userscripts on iphone and ipad, syncing bookmarks across apple and non-apple devices, managing downloads into categorised folders on ios. Of those, running tampermonkey scripts on safari and running userscripts on iphone and ipad are not what Userscripts is typically brought in for.
- What can Stay do that Userscripts cannot?
- Stay covers Tampermonkey and Violentmonkey compatibility, Userscript management, Cross-device bookmark sync, Download manager. Userscripts covers Built-in script editor, Standard metadata support, GM API, Remote script updating.
Answered from the vendors’ own pages
Stay: Can Stay run Tampermonkey scripts?
Yes. It supports its own native scripts and also scripts written for Tampermonkey and Violentmonkey, which is the main reason to choose it on Safari.
SourceUserscripts: Is Userscripts for Safari free?
Yes, free on the App Store and licensed under GPL v3. A commercial licence is required for use in something that is not itself open source.
SourceStay: How much does Stay cost?
A one-time payment, reported at around $5, covering iPhone, iPad and Mac with lifetime updates and no subscription. A free version with limited functionality is available.
SourceUserscripts: Does it work on iPhone?
Yes, on iOS and iPadOS 15.1 or later, which makes it one of the few ways to run userscripts on an iPhone.
SourceStay: Does Stay work on iPhone?
Yes. It supports Safari across iPhone, iPad and Mac, and the single purchase covers all three.
SourceUserscripts: Why do I get "Refused to execute a script" errors?
Safari does not let extensions bypass a site's Content Security Policy the way other browsers do. The documented workaround is changing the script's @inject-into setting, though it does not resolve every case.
SourceStay: What can userscripts do in Safari through Stay?
The vendor's examples are automatic pagination, immersive translation, redirect blocking and aggregated search. Anything a userscript can do on another browser is broadly in scope, subject to Safari's own restrictions.
SourceUserscripts: Do my scripts sync between Mac and iPhone?
Yes, over iCloud, though the project notes the sync can be delayed rather than immediate.
SourceStay: Is Stay open source?
The project publishes source on GitHub, and the app is distributed through the App Store as a paid product with a limited free tier.
SourceUserscripts: What are the system requirements?
macOS 12 or later with Safari 14.1 or later, or iOS and iPadOS 15.1 or later.
SourceRelated pages
More on Userscripts
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- Userscripts vs AdBlock Plus
- Userscripts vs Keeper
- Userscripts vs Redux DevTools
- Userscripts vs Stylus
- Userscripts vs Pocket
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- Userscripts vs JSON Viewer
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