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Personal Finance · head to head

Firefly III vs YNAB

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
YNAB logo

YNAB

Personal Finance

You Need A Budget

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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.; YNAB subscription priced exclusively in US dollars; international customers face unfavourable exchange rates
  • They diverge on capability: Firefly III covers Double-entry style ledger, YNAB covers Zero-based budgeting.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Firefly III and YNAB actually diverge.

Attributes where Firefly III and YNAB differ
AttributeFirefly IIIYNAB
Pricing modelOpen source, no licence feesubscription
PlatformsWeb, Linux, DockerWeb, iOS, Android
FoundedUnknown2004

Identical on both: starting price (Free), free tier (Yes), 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 YNAB

  • Zero-based budgeting
  • Bank sync
  • Goal tracking
  • Reports
  • Multi-device sync
  • Bank connections
  • Plaid
  • Bank-level encryption

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 YNAB
  • Someone who wants double-entry style accuracy rather than simple envelope budgetingnot YNAB
  • A privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwisenot YNAB
  • A developer who wants API access to build custom bank import scripts for accounts with no standard connectornot YNAB

YNAB

  • Personal and household budget trackingnot Firefly III
  • Debt management and repayment planningnot Firefly III
  • Family financial planning with multiple usersnot 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.

YNAB

  • Subscription priced exclusively in US dollars; international customers face unfavourable exchange rates
  • Multi-currency support restricted to one currency per spending plan
  • Bank import limited to select institutions in US, Canada, UK, and EU only
  • Household plan can only be shared with up to 6 people; additional members cannot access shared plan

Pricing, plan by plan

Firefly III

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

YNAB

Free
  • Annual Subscription$109/year
    • 34-day free trial with no credit card required
    • No credit card required to start
    • Share access with up to 6 people at no additional cost
  • Monthly Subscription$14.99/month
    • Share access with up to 6 people at no additional cost
    • Real-time account syncing
    • Bank connection and transaction tracking

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 YNAB if

  • You need zero-based budgeting.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want bank sync.
YNAB review

Questions people ask

Is Firefly III or YNAB better?
Neither clearly leads. Firefly III starts at Free and YNAB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Firefly III or YNAB?
Firefly III starts at Free and YNAB at Free.
Does Firefly III or YNAB run on more platforms?
Firefly III runs on Web, Linux, Docker. YNAB runs on Web, iOS, Android.
Can I use Firefly III for free?
Both have a free tier, so you can try either at no cost before committing.
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 YNAB is typically brought in for.
What can Firefly III do that YNAB cannot?
Firefly III covers Double-entry style ledger, Multi-currency accounts, Bill and subscription tracking, Rule engine. YNAB covers Zero-based budgeting, Bank sync, Goal tracking, Reports.

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.

YNAB: How much does YNAB cost per month?

YNAB costs $14.99 USD per month on a month-to-month basis, or $9.08 per month when paid annually as a $109 per year subscription. Both plans come with a 34-day free trial and no credit card required to start. Source: https://www.ynab.com/pricing

Source
Firefly III: Does it support multiple currencies?

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

YNAB: Can I share YNAB access with my family?

Yes, both annual and monthly YNAB plans include the ability to share access with up to 6 people at no additional cost, making it suitable for family budget management. Source: https://www.ynab.com/pricing

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.

YNAB: Does YNAB offer a free trial?

Yes, YNAB provides a 34-day free trial with no credit card required to sign up. This trial gives full access to all budgeting features including account syncing, transaction tracking, goal-setting, and debt management tools. Source: https://www.ynab.com/pricing

Source
YNAB: Do students get a discount on YNAB?

Yes, verified college students receive a full year of YNAB access for free through YNAB's College Program. This allows eligible students to use all features at no cost for 12 months. Source: https://www.ynab.com/pricing

Source
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