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Firefly III vs Investopedia Stock Simulator

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
Investopedia Stock Simulator logo

Investopedia Stock Simulator

Personal Finance

Paper trading without risk

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.; Investopedia Stock Simulator market data is delayed by 15-20 minutes, inadequate for real-time trading education
  • They diverge on capability: Firefly III covers Double-entry style ledger, Investopedia Stock Simulator covers Virtual stock trading.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Firefly III and Investopedia Stock Simulator actually diverge.

Attributes where Firefly III and Investopedia Stock Simulator differ
AttributeFirefly IIIInvestopedia Stock Simulator
Pricing modelOpen source, no licence feeUnknown
PlatformsWeb, Linux, DockerWeb
FoundedUnknown2009

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 Investopedia Stock Simulator

  • Virtual stock trading
  • Real-time market data
  • Portfolio management
  • Educational resources
  • Market data
  • 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 Investopedia Stock Simulator
  • Someone who wants double-entry style accuracy rather than simple envelope budgetingnot Investopedia Stock Simulator
  • A privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwisenot Investopedia Stock Simulator
  • A developer who wants API access to build custom bank import scripts for accounts with no standard connectornot Investopedia Stock Simulator

Investopedia Stock Simulator

  • Budget Managementnot Firefly III
  • Expense Trackingnot Firefly III
  • Investment Trackingnot 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.

Investopedia Stock Simulator

  • Market data is delayed by 15-20 minutes, inadequate for real-time trading education
  • Limited order type support compared to modern trading platforms
  • Simplified fill simulation does not replicate real trading execution
  • Platform has not received significant updates in many years

Pricing, plan by plan

Firefly III

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

Investopedia Stock Simulator

Free

No published plan breakdown. See the Investopedia Stock Simulator review.

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 Investopedia Stock Simulator if

  • You need virtual stock trading.
  • You want to start without paying.
  • You also want real-time market data.
Investopedia Stock Simulator review

Questions people ask

Is Firefly III or Investopedia Stock Simulator better?
Neither clearly leads. Firefly III starts at Free and Investopedia Stock Simulator at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Firefly III or Investopedia Stock Simulator?
Firefly III starts at Free and Investopedia Stock Simulator at Free.
Does Firefly III or Investopedia Stock Simulator run on more platforms?
Firefly III runs on Web, Linux, Docker. Investopedia Stock Simulator runs on Web.
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 Investopedia Stock Simulator is typically brought in for.
What can Firefly III do that Investopedia Stock Simulator cannot?
Firefly III covers Double-entry style ledger, Multi-currency accounts, Bill and subscription tracking, Rule engine. Investopedia Stock Simulator covers Virtual stock trading, Real-time market data, Portfolio management, Educational resources.

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.

Investopedia Stock Simulator: Is the Investopedia Stock Simulator free?

Yes, the Investopedia Stock Simulator is completely free to use after creating an account. No real funds are required for simulated trading.

Source
Firefly III: Does it support multiple currencies?

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

Investopedia Stock Simulator: What is included in the simulator?

Users receive a $100,000 virtual portfolio to trade stocks, with integrated educational content including articles, tutorials, and a financial dictionary for learning investing.

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.

Investopedia Stock Simulator: What are the limitations of the Investopedia Simulator?

The simulator uses delayed market data (typically 15-20 minutes), has limited order type support, simplified fill simulation, and has not received proper updates in many years.

Source
Investopedia Stock Simulator: Can you compete with other traders?

Yes, you can join existing games or create custom games with configurable rules including options, margin trading, and adjustable commission rates, competing with thousands of Investopedia traders.

Source
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