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Personal Finance · head to head

Firefly III vs Monarch Money

Firefly III logo

Firefly III

Personal Finance

Free, open source, self-hosted personal finance manager with double-entry style accounting

From
Free
Rated
-
Full reviewWebsite
Monarch Money logo

Monarch Money

Personal Finance

All-in-one wealth management platform

From
$99/year
Rated
-
Full reviewWebsite

The short version

  • Only Firefly III has a free tier, so it costs nothing to try first.
  • Each has a real cost: Firefly III there is no official managed hosting, so a non-technical user has no easy on-ramp the way Actual Budget offers with its paid hosted sync.; Monarch Money the free trial is one week, after which a paid subscription is required to keep using the app
  • They diverge on capability: Firefly III covers Double-entry style ledger, Monarch Money covers Budget management.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Firefly III and Monarch Money actually diverge.

Attributes where Firefly III and Monarch Money differ
AttributeFirefly IIIMonarch Money
Starting priceFree$99/year
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsWeb, Linux, DockerWeb, IOS, Android
FoundedUnknown2022

Identical on both: user rating (Not yet rated), category (Personal Finance).

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 Firefly III

  • Double-entry style ledger
  • Multi-currency accounts
  • Bill and subscription tracking
  • Rule engine
  • Reports and charts
  • API access

Only in Monarch Money

  • Budget management
  • Investment tracking
  • Tax planning
  • Financial insights
  • Bank accounts
  • Investment accounts
  • Cryptocurrency
  • Web support

What people use each for

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

Firefly III

  • A self-hoster already running a home server or NAS who wants their financial ledger on the same infrastructurenot Monarch Money
  • Someone who wants double-entry style accuracy rather than simple envelope budgetingnot Monarch Money
  • A privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwisenot Monarch Money
  • A developer who wants API access to build custom bank import scripts for accounts with no standard connectornot Monarch Money

Monarch Money

  • Tracking household budgets and spending across linked bank accountsnot Firefly III
  • Shared budgeting between partners in one accountnot Firefly III
  • Monitoring net worth and investment balances alongside cash accountsnot Firefly III

Where each one falls short

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

Firefly III

  • There is no official managed hosting, so a non-technical user has no easy on-ramp the way Actual Budget offers with its paid hosted sync.
  • The double-entry-influenced model is less intuitive for newcomers than simple envelope budgeting, and the learning curve is real.
  • Automatic bank sync depends on the community-run importer and third-party connectors, and coverage and reliability vary a lot by bank and country.
  • Mobile access is via a web interface rather than a polished native app, which is a step behind Actual Budget or Lunch Money on phones.
  • Because there is no company behind it, security patching and feature development depend entirely on volunteer maintainer time.

Monarch Money

  • The free trial is one week, after which a paid subscription is required to keep using the app
  • The advertised 30 percent discount with code WELCOME applies to the first year only and is restricted to new users
  • There is no free tier, and a Plus tier gates features above the base subscription

Pricing, plan by plan

Firefly III

Free
  • Firefly IIIFree
    • Full functionality, self-hosted
    • No usage limits
    • Community support, donations accepted

Monarch Money

$99/year
  • Core Plan$99/year
    • 7-day free trial
  • Plus$null/year
    • Premium features

Which should you pick?

Choose Firefly III if

  • You need double-entry style ledger.
  • You want to start without paying.
  • You work on Web, Linux, Docker.
  • You also want multi-currency accounts.
Firefly III review

Choose Monarch Money if

  • You need budget management.
  • You work on Web, IOS, Android.
  • You also want investment tracking.
Monarch Money review

Questions people ask

Is Firefly III or Monarch Money better?
Neither clearly leads. Firefly III starts at Free and Monarch Money at $99/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Firefly III or Monarch Money?
Firefly III has a free tier; the other does not. Paid plans start at Free for Firefly III and $99/year for Monarch Money.
Does Firefly III or Monarch Money run on more platforms?
Firefly III runs on Web, Linux, Docker. Monarch Money runs on Web, IOS, Android.
Can I use Firefly III for free?
Yes. Firefly III has a free tier, so you can try it without paying. Monarch Money starts at $99/year.
What is Firefly III best used for?
Firefly III is most often used for a self-hoster already running a home server or nas who wants their financial ledger on the same infrastructure, someone who wants double-entry style accuracy rather than simple envelope budgeting, a privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwise, a developer who wants api access to build custom bank import scripts for accounts with no standard connector. Of those, a self-hoster already running a home server or nas who wants their financial ledger on the same infrastructure and someone who wants double-entry style accuracy rather than simple envelope budgeting are not what Monarch Money is typically brought in for.
What can Firefly III do that Monarch Money cannot?
Firefly III covers Double-entry style ledger, Multi-currency accounts, Bill and subscription tracking, Rule engine. Monarch Money covers Budget management, Investment tracking, Tax planning, Financial insights.

Answered from the vendors’ own pages

Firefly III: Can I pay someone to host Firefly III for me?

Not through the core project; some third-party providers sell Firefly III hosting independently, but there is no official managed service.

Monarch Money: How much does Monarch Money cost?

Monarch Money Core plan costs 99 USD/year, referenced in customer testimonials and promo code terms. Additional Plus tier exists but specific pricing is not disclosed on the main page.

Source
Firefly III: Does it support multiple currencies?

Yes, natively, including accounts and transactions in different currencies.

Monarch Money: Is there a free trial?

Yes, Monarch Money offers a 7-day free trial for new users with no credit card required.

Source
Firefly III: Is it really free with no paid tier?

Yes, the software is free and open source under the AGPL; the project accepts donations but sells nothing.

Monarch Money: Are there discounts available?

Monarch Money offers 30% off the first year with promo code WELCOME for new members on annual Core plan subscriptions. Cannot be combined with other offers.

Source
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