★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: StockAlert Pro checked August 4, 2026
Tool Comparison
Firefly III vs StockAlert Pro
Pick Firefly III instead if
Firefly III
Free · Web · API
- You care about portfolio and other, things StockAlert Pro doesn't offer
Start here
StockAlert Pro
Free • From $19.99/mo · Web · API
- You care about alerts, calendar, and dividends, things Firefly III doesn't offer
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOutbound links may include affiliate or sponsor codes.
Our take
The bottom line
Firefly III and StockAlert Pro cover a lot of the same ground (2 shared categories, APIs & data feeds and webhooks), so for the basics you won't go far wrong with either. StockAlert Pro simply does more: 11 categories to Firefly III's 4, including alerts, calendar, and dividends. Firefly III counters by being completely free.
What readers say
Firefly III
Vote once to reveal the community verdict.
StockAlert Pro
Vote once to reveal the community verdict.
Key differences at a glance
- Broader coverage
- StockAlert Pro11 vs 4 categories
- Free plan
- Both
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free | Free • From $19.99/mo |
Free tier | Yes | Yes |
Free trial | — | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | No | No |
Integrations | Salt Edge, GoCardless +2 more | Slack and n8n |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 4 | 11 |
Regions | — | North America, Europe |
| Data & capabilities | ||
Data quality | — | 3 signals: Latency: 15-min Delayed and End of Day, Granularity: Minute and EOD +1 more |
Security | — | Data residency: EU |
| Try it | Visit Firefly III | Visit StockAlert Pro |
Where each one shines
What Firefly III and StockAlert Pro each do best.ShowHide
Where each one shines
What Firefly III and StockAlert Pro each do best.What Firefly III does best
- Self-host a personal finance ledger under the AGPLv3 open-source license rather than using a hosted budgeting app.
- Tracking accounts and transactions with double-entry bookkeeping, budgets, categories, tags, recurring transactions, subscriptions, piggy banks, rules, and reporting.
- The JSON REST API with OAuth2, personal access tokens, and a full OpenAPI specification for dashboards, automations, and personal analytics.
- Optional event webhooks for transaction create, update, and delete events when enabled through environment configuration.
- Import support for transaction data through the separate Firefly III Data Importer, CSV and CAMT.053 files, and optional providers such as Salt Edge, GoCardless, and SimpleFIN.
What StockAlert Pro does best
- Tools for creating alerts across price, technical, volume, fundamental, dividend, earnings, insider-activity, and time-reminder categories.
- Monitoring supported stocks and ETFs during regular, pre-market, and after-hours sessions, with notification timing dependent on plan and data freshness.
- AI equity reports and suggested smart alerts as monitoring prompts before deciding which conditions to activate.
- Tools for running a daily AI watchlist assistant that refreshes alert ideas for tracked symbols.
- The stock and ETF database, undervalued P/E screener, dividend calendar, and watchlists for lightweight discovery.
Every detail we compared
Every tracked attribute for Firefly III and StockAlert Pro, side by side.ShowHide
Every detail we compared
Every tracked attribute for Firefly III and StockAlert Pro, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | Other | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North AmericaEurope |
Coverage details | Not specified | Countries: US, DE, and GB4 exchangesIdentifiers: Ticker |
| Data | ||
Data freshness | Not specified | 15-min DelayedEnd of Day |
Data granularity | Not specified | MinuteEOD |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: OAuth2 and APIKeyWebhooks | Auth: APIKeySDKs: TS and PythonWebhooks |
Import methods | CSVManual | Not specified |
Integrations | Salt EdgeGoCardlessSimpleFINSlack | Slackn8n |
Export formats | CSV | JSON |
| Plans & trust | ||
Security & compliance | Not specified | Data residency: EU |
Vendor & support | Firefly III (open-source project)Support: Email | twys Software GmbHCountry: GermanySupport: Email |
Curation ratings | Methodology 4/5Reliability 4/5UX 4/5 | Methodology 3/5Reliability 3/5UX 4/5 |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Free | Free“Basic” |
| Entry paid plan | — | $19.99/mo“Premium (Monthly)” |
| Top plan | — | Subscription“Premium (Annual)” |
Questions we keep getting
What's the difference between Firefly III and StockAlert Pro?
Firefly III leans toward portfolio, APIs & data feeds, and webhooks, while StockAlert Pro puts more weight on alerts, calendar, and dividends. They overlap in 2 categories, so for most people it comes down to workflow preference and price.
How much do Firefly III and StockAlert Pro cost?
Good news: both Firefly III and StockAlert Pro have free plans, so you can run them side by side and only pay if you hit a wall.
Do Firefly III and StockAlert Pro have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose Firefly III or StockAlert Pro?
It depends on what you're after. Pick Firefly III if portfolio and other matter to you; go with StockAlert Pro if you'd rather have alerts and calendar. And if you only need the basics both share, let price decide.
What asset classes do Firefly III and StockAlert Pro cover?
Firefly III covers other. StockAlert Pro covers stocks and ETFs.
Can I export data from Firefly III and StockAlert Pro?
Firefly III exports to CSV. StockAlert Pro is stingier about getting data out.
Which has a better stock screener: Firefly III or StockAlert Pro?
StockAlert Pro has a stock screener for surfacing ideas; Firefly III doesn't, and focuses its energy elsewhere.
Can I track my portfolio with Firefly III or StockAlert Pro?
Firefly III handles portfolio tracking. StockAlert Pro is really a research tool; you'd track your portfolio elsewhere.
Keep researching
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Feedback
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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.