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Browser Extensions · head to head

FireMonkey vs Rakuten

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Rakuten logo

Rakuten

Browser Extensions

Get cash back on every purchase

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: FireMonkey firefox only, and requires a recent one: version 93 on desktop, 113 on Android.; Rakuten minimum withdrawal amount of $5.01 creates friction for light users
  • They diverge on capability: FireMonkey covers Scripts and styles together, Rakuten covers Cash back rewards.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Rakuten actually diverge.

Attributes where FireMonkey and Rakuten differ
AttributeFireMonkeyRakuten
Pricing modelopen-sourcefree
PlatformsFirefoxBrowser Extension (Chrome, Firefox, Safari, Edge)
FoundedUnknown1999

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 FireMonkey

  • Scripts and styles together
  • Monaco editor with ESLint
  • Unlimited client-side storage
  • Global injection
  • Notifications and clipboard
  • Firefox for Android

Only in Rakuten

  • Cash back rewards
  • Coupon codes
  • In-store offers
  • Price comparisons
  • Chrome support
  • Firefox support
  • Edge support
  • Safari support

What people use each for

The jobs each tool is most often brought in to do.

FireMonkey

  • Running user scripts and user styles without two separate extensionsnot Rakuten
  • Restyling sites with CSS alongside scripted behaviour changesnot Rakuten
  • Editing scripts in a full editor inside the browsernot Rakuten
  • Injecting CSS globally across every sitenot Rakuten
  • Managing a mixed library of scripts and styles from one dashboardnot Rakuten

Rakuten

  • Cash back on online purchases from partner retailersnot FireMonkey
  • Cash back on in-store purchases using linked cardsnot FireMonkey

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

FireMonkey

  • Firefox only, and requires a recent one: version 93 on desktop, 113 on Android.
  • Not a drop-in replacement for Greasemonkey, Tampermonkey or Stylus. The project says so itself, so an existing library may need adjusting.
  • A much smaller user base than Tampermonkey or Violentmonkey, which means fewer people have hit the bug you are about to hit.
  • No Chrome, Edge or Safari build, so it cannot be the answer for anyone working across browsers.
  • Combining scripts and styles in one extension also combines the blast radius: one extension with permission to inject both into every page.

Rakuten

  • Minimum withdrawal amount of $5.01 creates friction for light users
  • Quarterly payout schedule only, with months-long delays between earning and receiving payments
  • Amazon cashback limited to specific categories at 1-3% rates
  • Must click through Rakuten link first or cashback does not register

Pricing, plan by plan

FireMonkey

Free
  • Open sourceFree
    • MPL-2.0 licensed
    • Unlimited scripts and styles
    • No account required

Rakuten

Free

No published plan breakdown. See the Rakuten review.

Which should you pick?

Choose FireMonkey if

  • You need scripts and styles together.
  • You want to start without paying.
  • You work on Firefox.
  • You also want monaco editor with eslint.
FireMonkey review

Choose Rakuten if

  • You need cash back rewards.
  • You want to start without paying.
  • You work on Browser Extension (Chrome, Firefox, Safari, Edge).
  • You also want coupon codes.
Rakuten review

Questions people ask

Is FireMonkey or Rakuten better?
Neither clearly leads. FireMonkey starts at Free and Rakuten at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Rakuten?
FireMonkey starts at Free and Rakuten at Free.
Does FireMonkey or Rakuten run on more platforms?
FireMonkey runs on Firefox. Rakuten runs on Browser Extension (Chrome, Firefox, Safari, Edge).
Can I use FireMonkey for free?
Both have a free tier, so you can try either at no cost before committing.
What is FireMonkey best used for?
FireMonkey is most often used for running user scripts and user styles without two separate extensions, restyling sites with css alongside scripted behaviour changes, editing scripts in a full editor inside the browser, injecting css globally across every site. Of those, running user scripts and user styles without two separate extensions and restyling sites with css alongside scripted behaviour changes are not what Rakuten is typically brought in for.
What can FireMonkey do that Rakuten cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Rakuten covers Cash back rewards, Coupon codes, In-store offers, Price comparisons.

Answered from the vendors’ own pages

FireMonkey: What makes FireMonkey different from Violentmonkey?

It manages user styles as well as user scripts. The usual arrangement is a script manager plus a separate style manager such as Stylus; FireMonkey replaces both with one extension.

Source
Rakuten: Does Rakuten charge membership fees?

No. Rakuten is completely free to join and use. There are no membership fees, setup fees, or any charges to members. Rakuten's revenue comes from merchant commissions, not user fees.

Source
FireMonkey: Which browsers does FireMonkey support?

Firefox only. Desktop requires Firefox 93 or later and Android requires 113, with an API minimum of 102.

Source
Rakuten: Is there a cost to use the Rakuten browser extension or mobile app?

No, both the browser extension and mobile app are free to download and use at no cost.

Source
FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

Source
Rakuten: How does Rakuten make money if it's free?

Brands partner with Rakuten and pay commissions to bring them customers. Rakuten shares a portion of these commissions with members as cash back rewards.

Source
FireMonkey: Will my existing Tampermonkey scripts work?

Not necessarily. The project states that while it shares functionality with Greasemonkey, Tampermonkey and Stylus, there are differences, so scripts and styles written for those may need adjusting.

Source
FireMonkey: What editor does FireMonkey use?

Current versions use the Monaco editor with ESLint, the same editor component that powers VS Code.

Source
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