VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, October 28, 2025

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Tool Comparison

Firefly III vs Invesst comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Firefly III adds APIs & SDKs, Webhooks, and Other coverage that Invesst skips.

Invesst includes Screeners, Valuation Models, AI, and AI Chat categories that Firefly III omits.

Firefly III has a free tier, while Invesst requires a paid plan.

In depth comparison

Firefly III logo

Firefly III

firefly-iii.org

An open-source, self-hosted personal finance manager licensed under AGPLv3. Offers full double-entry bookkeeping, REST APIs, and optional event webhooks. Exchange-rate conversion is available from v6.2 onward as an opt-in feature. Bank connections are handled separately through the Firefly Data Importer app.

Platforms

WebAPI

Pricing

Free

Quick highlights

  • Self-hosted open-source personal finance manager (AGPLv3 license).
  • Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
  • Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification.
  • Event webhooks for transaction create/update/delete, enabled through environment configuration.
  • Separate Data Importer tool supports CSV and CAMT.053, with optional bank integrations via Salt Edge, GoCardless, and SimpleFIN.

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Invesst logo

Invesst

invesst.ai

Hands-on review

An AI-first research platform with screeners, automated DCF and valuation tools, and real-time market data. The site highlights “Universal Brokerage Integrations” for read-only portfolio insights. Currently in open beta with a “Start for Free” option, though full pricing is only described in the Terms as monthly or annual subscriptions. Security claims include SOC2, ISO 27001, and GDPR compliance, with a linked Trust Report (unverified).

Platforms

Web

Pricing

Subscription

Quick highlights

  • AI-driven investment research with natural-language agents and data-rich search capabilities.
  • Automated valuation models including DCF, along with predictive analytics and customizable screeners.
  • Real-time market data for stocks and ETFs, plus filtering tools across multiple metrics.
  • Portfolio insights through read-only brokerage linking, marketed as “Universal Brokerage Integrations.”
  • Public security claims include SOC2, ISO 27001, and GDPR, along with a published Trust Report.

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Where they differ

Firefly III

Distinct strengths include:

APIs & SDKsWebhooksOther
  • Self-hosted open-source personal finance manager (AGPLv3 license).
  • Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
  • Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification.
  • Event webhooks for transaction create/update/delete, enabled through environment configuration.

Invesst

Distinct strengths include:

ScreenersValuation ModelsAIAI Chat
  • AI-driven investment research with natural-language agents and data-rich search capabilities.
  • Automated valuation models including DCF, along with predictive analytics and customizable screeners.
  • Real-time market data for stocks and ETFs, plus filtering tools across multiple metrics.
  • Portfolio insights through read-only brokerage linking, marketed as “Universal Brokerage Integrations.”

Feature-by-feature breakdown

AttributeFirefly IIIInvesst
Categories

Which research workflows each platform targets

Shared: Portfolio

Unique: APIs & SDKs, Webhooks, Other

Shared: Portfolio

Unique: Screeners, Valuation Models, AI, AI Chat

Asset types

Supported asset classes and universes

Other

Stocks, ETFs, Cryptos

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web, API

Web

Pricing

High-level pricing models

Free

Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Self-hosted open-source personal finance manager (AGPLv3 license).
  • Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting.
  • Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification.
  • Event webhooks for transaction create/update/delete, enabled through environment configuration.
  • Separate Data Importer tool supports CSV and CAMT.053, with optional bank integrations via Salt Edge, GoCardless, and SimpleFIN.
  • CSV export available for accounts, budgets, categories, tags, recurring transactions, subscriptions, piggy banks, rules, and more.

Unique

  • AI-driven investment research with natural-language agents and data-rich search capabilities.
  • Automated valuation models including DCF, along with predictive analytics and customizable screeners.
  • Real-time market data for stocks and ETFs, plus filtering tools across multiple metrics.
  • Portfolio insights through read-only brokerage linking, marketed as “Universal Brokerage Integrations.”
  • Public security claims include SOC2, ISO 27001, and GDPR, along with a published Trust Report.
  • Currently browser-only; accessible via open beta with “Start for Free” and “Try Open Beta” calls to action.
Tested

Verified by hands-on testing inside Find My Moat

Not yet

Yes

Editor pick

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Frequently Asked Questions

Which workflows do Firefly III and Invesst both support?

Both platforms cover Portfolio workflows, so you can research those use cases in either tool before digging into the feature differences below.

Which tool offers a free plan?

Firefly III offers a free entry point, while Invesst requires a paid subscription. Review the pricing table to see how the paid tiers compare.

How can you access Firefly III and Invesst?

Both Firefly III and Invesst prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

Firefly III differentiates itself with Self-hosted open-source personal finance manager (AGPLv3 license)., Supports double-entry bookkeeping with budgets, categories, tags, and detailed reporting., and Comprehensive REST API (JSON) with OAuth2 and Personal Access Tokens, plus a full OpenAPI specification., whereas Invesst stands out for AI-driven investment research with natural-language agents and data-rich search capabilities., Automated valuation models including DCF, along with predictive analytics and customizable screeners., and Real-time market data for stocks and ETFs, plus filtering tools across multiple metrics..

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.