Tool Comparison
Portfolio123 vs Testfol.io
- Paid from
- $25/mo
- Free plan
- Yes
- Platforms
- Web, API, Desktop
Best if
- Delayed quotes won't cut it; you need real-time data
- You want an API so you can script or automate things
- You want screeners, data visualizations, and stock ideas.
- Paid from
- $15/mo
- Free plan
- Yes
- Platforms
- Web
Best if
- You want the cheaper way in: plans start at $15/mo instead of $25/mo
- You want risk metrics and compounding calculator.
- You're a long-term investor who cares more about fundamentals than headlines
Start here
Portfolio123
Free • From $300/yr · Web · API · Desktop
- Delayed quotes won't cut it; you need real-time data
- You want an API so you can script or automate things
- You want screeners, data visualizations, and stock ideas.
Pick Testfol.io instead if
Testfol.io
Free • From $15/mo · Web
- You want the cheaper way in: plans start at $15/mo instead of $25/mo
- You want risk metrics and compounding calculator.
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
Portfolio123 and Testfol.io cover a lot of the same ground (3 shared categories, quant, backtesting, and correlation), so for the basics you won't go far wrong with either. Portfolio123 simply does more: 19 categories to Testfol.io's 5, including screeners, data visualizations, and stock ideas. Testfol.io counters by starting cheaper at $15/mo.
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Portfolio123
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Testfol.io
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Key differences at a glance
- Cheaper paid plan
- Testfol.io$15/mo vs $25/mo
- Free trial
- Testfol.io7 days
- Broader coverage
- Portfolio12319 vs 5 categories
- Desktop app
- Portfolio123
- API access
- Portfolio123
- Real-time data
- Portfolio123
What Portfolio123 does best
- Build multifactor ranking systems, stock screens, ETF screens, and rules-based strategies.
- Run simulations with custom universes, buy and sell rules, position sizing, hedging, rebalancing, slippage, and commissions.
- Point-in-time data designed to avoid survivorship and look-ahead bias, with fundamentals, estimates, corporate actions, sector and industry classifications, and historical issues.
- Create ranking systems from fundamental, technical, sentiment, and macro factors, including public factor documentation and FRED-linked economic series.
- AI Factor to train machine-learning predictors for expected returns and feed those predictions into rankings, simulations, and asset-level analysis.
What Testfol.io does best
- Tools for building multi-asset portfolio backtests using ETFs, mutual funds, stocks, cashflow legs, and rebalancing controls such as rebalance bands.
- Review performance and risk statistics such as cumulative return, CAGR, money-weighted return, max drawdown, volatility, Sharpe, Sortino, and beta.
- Asset Analyzer for historical performance analysis and daily-return correlations.
- Testing tools for tactical allocation rules that swap between allocations using documented indicators, trading frequency, offsets, cashflows, benchmarks, and current-status views.
- Portfolio Optimizer searches for asset allocation and use choices based on user-provided inputs.
Side by side
Pricing comparison
See for yourself
Side by side
Price, platforms, data, and market coverage.ShowHide
Side by side
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $300/yr | Free • From $15/mo |
Free tier | Yes | Yes |
Free trial | — | 7 days |
Plan limits | 25 limits: Free Screener & Backtesting Access: duration days: 30, Screener (Annual): backtest history years: 5 +23 more | 10 limits: Free (Anonymous): note: Some tools (e.g., Signal Analyzer) require sign-in., Pro: annual price usd: 150 +8 more |
| Platforms & access | ||
Web app | Yes | Yes |
Desktop app | Yes | No |
Mobile app | No | No |
API access | Yes | No |
Broker sync | Yes | — |
Integrations | Interactive Brokers and Tradier | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +5 more | Retail Traders, Pro Retail +2 more |
Categories covered | 19 | 5 |
Regions | North America, Europe | — |
| Data & capabilities | ||
Data quality | 5 signals: Latency: Real-time and End of Day, Granularity: EOD +3 more | Latency: End of Day and Granularity: EOD |
Data partners | 4 partners: FactSet, S&P Global Market Intelligence +2 more | FRED |
Capabilities | 6 signals: Custom formulas, Ranking backtests +4 more | Rebalancing and Correlation |
| Try it | Visit Portfolio123 | Visit Testfol.io |
Standout features
The best features of Portfolio123 and Testfol.io.ShowHide
Standout features
What Portfolio123 does best
- Build multifactor ranking systems, stock screens, ETF screens, and rules-based strategies.
- Run simulations with custom universes, buy and sell rules, position sizing, hedging, rebalancing, slippage, and commissions.
- Point-in-time data designed to avoid survivorship and look-ahead bias, with fundamentals, estimates, corporate actions, sector and industry classifications, and historical issues.
- Create ranking systems from fundamental, technical, sentiment, and macro factors, including public factor documentation and FRED-linked economic series.
- AI Factor to train machine-learning predictors for expected returns and feed those predictions into rankings, simulations, and asset-level analysis.
What Testfol.io does best
- Tools for building multi-asset portfolio backtests using ETFs, mutual funds, stocks, cashflow legs, and rebalancing controls such as rebalance bands.
- Review performance and risk statistics such as cumulative return, CAGR, money-weighted return, max drawdown, volatility, Sharpe, Sortino, and beta.
- Asset Analyzer for historical performance analysis and daily-return correlations.
- Testing tools for tactical allocation rules that swap between allocations using documented indicators, trading frequency, offsets, cashflows, benchmarks, and current-status views.
- Portfolio Optimizer searches for asset allocation and use choices based on user-provided inputs.
All details
Every attribute we track for Portfolio123 and Testfol.io.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsClosed-End Funds | StocksETFsMutual Funds |
Experience | BeginnerIntermediateAdvanced | IntermediateAdvanced |
Target audience | Retail TradersPro RetailInstitutional InvestorsAnalystsQuants/DevelopersFinancial AdvisorsStudents/Researchers | Retail TradersPro RetailLong-term InvestorsQuants/Developers |
Regions | North AmericaEurope | Not specified |
Coverage details | Countries: US and CAIdentifiers: Ticker | Identifiers: Ticker |
| Data | ||
Data freshness | Real-timeEnd of Day | End of Day |
Data granularity | EOD | EOD |
Data partners | FactSetS&P Global Market IntelligenceICE Data ServicesFRED | FRED |
| Access & integrations | ||
API protocols | REST | Not specified |
API auth & delivery | Auth: APIKeyDocs | Not specified |
Import methods | BrokerOAuthCSV | Not specified |
Integrations | Interactive BrokersTradier | Not specified |
Export formats | CSVJSON | CSV |
| Plans & trust | ||
Capability signals | Custom formulasRanking backtestsUniverse builderBroker syncRebalancingCorrelation | RebalancingCorrelation |
Vendor & support | Portfolio123Support: Forum | Support: Email |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Free“Manage (Free)” | Free“Free (Anonymous)”note: Some tools (e.g., Signal Analyzer) require sign-in. |
| Entry paid plan | $300/yr≈ $25/mo“Screener (Annual)”backtest history years: 5 · resource units: 400 · +1 more | $15/mo“Pro”annual price usd: 150 · annual monthly equivalent usd: 12.5 · +1 more |
| Tier 2 | $35/mo“Screener (Monthly)”backtest history years: 5 · resource units: 400 · +1 more | $30/mo“Pro+”annual price usd: 300 · annual monthly equivalent usd: 25 · +3 more |
| Tier 3 | $1000/yr≈ $83.33/mo“Backtest (Annual)”backtest history years: 10 · resource units: 1,000 · +1 more | $960/yr≈ $80/mo“Max”billed: Annually |
| Tier 4 | $116/mo“Backtest (Monthly)”backtest history years: 10 · resource units: 1,000 · +1 more | — |
| Tier 5 | $1500/yr≈ $125/mo“Portfolio (Annual)”backtest history years: 15 · resource units: 5,000 · +1 more | — |
| Tier 6 | $174/mo“Portfolio (Monthly)”backtest history years: 15 · resource units: 5,000 · +1 more | — |
| Tier 7 | $2400/yr≈ $200/mo“Ultimate (Annual)”backtest history years: 20 · resource units: 10,000 · +1 more | — |
| Top plan | $278/mo“Ultimate (Monthly)”backtest history years: 20 · resource units: 10,000 · +1 more | — |
| Custom / enterprise | Contact sales“Professional / API & Data Licenses” | — |
| Free trial | — | 7 days |
Alternatives
Free alternatives
Questions we keep getting
What's the difference between Portfolio123 and Testfol.io?
Portfolio123 leans toward screeners, data visualizations, and quant, while Testfol.io puts more weight on backtesting, correlation, and risk metrics. They overlap in 3 categories, so for most people it comes down to workflow preference and price.
How much do Portfolio123 and Testfol.io cost?
Good news: both Portfolio123 and Testfol.io have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: Portfolio123 or Testfol.io?
Portfolio123 is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Does Portfolio123 or Testfol.io have an API?
Portfolio123 has an API for programmatic access and custom integrations. Testfol.io doesn't, so you're working through its interface.
Should I choose Portfolio123 or Testfol.io?
It depends on what you're after. Pick Portfolio123 if screeners and data visualizations matter to you; go with Testfol.io if you'd rather have risk metrics and compounding calculator. And if you only need the basics both share, let price decide.
What asset classes do Portfolio123 and Testfol.io cover?
Both cover stocks and ETFs. Portfolio123 also handles closed-end funds. Testfol.io adds mutual funds on top.
Does Portfolio123 or Testfol.io have real-time data?
Portfolio123 offers real-time data, which matters if you trade actively. Testfol.io runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from Portfolio123 and Testfol.io?
Yes, both export to spreadsheets (CSV), which is handy if you like running your own numbers.
Which has a better stock screener: Portfolio123 or Testfol.io?
Portfolio123 has a stock screener for surfacing ideas; Testfol.io doesn't, and focuses its energy elsewhere.
Can I track my portfolio with Portfolio123 or Testfol.io?
Portfolio123 handles portfolio tracking. Testfol.io is really a research tool; you'd track your portfolio elsewhere.
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