★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
GuruFocus vs MesoSim
Start here
GuruFocus
Free • From $549/yr · Web · Mobile · API
- You want the cheaper way in: plans start at $45.75/mo instead of $83.33/mo
- You do a lot of your research from your phone
- You care about stock ideas, screeners, and ETF screeners, things MesoSim doesn't offer
Pick MesoSim instead if
MesoSim
Free • From $1000/yr · Web · API
- You care about paper trading, something GuruFocus doesn't offer
- You trade often and need tooling built for speed
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
GuruFocus and MesoSim cover a lot of the same ground (6 shared categories, including data visualizations, backtesting, and APIs & data feeds), so for the basics you won't go far wrong with either. GuruFocus simply does more: 49 categories to MesoSim's 7, including stock ideas, screeners, and ETF screeners, plus a mobile app. MesoSim counters by keeping things simpler.
What readers say
GuruFocus
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MesoSim
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Key differences at a glance
- Cheaper paid plan
- GuruFocus$45.75/mo vs $83.33/mo
- Free trial
- GuruFocus7 days
- Broader coverage
- GuruFocus49 vs 7 categories
- Mobile app
- GuruFocus
- Global coverage
- GuruFocus
- Beginner friendly
- GuruFocus
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 • From $549/yr | Free • From $1000/yr |
Free tier | Yes | Yes |
Free trial | 7 days | — |
Plan limits | 49 limits: Free: portfolio limit: Up to 3 portfolios with 25 stocks each for free members, Free: data api requests: 100/month included in the Free API package +47 more | 5 limits: Free: free runs: 25, Standard: backtests: Unlimited +3 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | Yes | No |
API access | Yes | Yes |
Broker sync | Yes | — |
Integrations | GuruFocus Data API, GuruFocus MCP Server +3 more | MesoLive |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +9 more | Pro Retail, Algo Traders +4 more |
Categories covered | 49 | 7 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America |
| Data & capabilities | ||
Data quality | 5 signals: Latency: End of Day, Granularity: EOD +3 more | Granularity: Minute |
Data partners | 5 partners: QuoteMedia, Morningstar +3 more | Cboe and Deribit |
Capabilities | 9 signals: Custom formulas, Ranking backtests +7 more | 4 signals: Multi-leg options, Greeks +2 more |
Security | Status page and Encryption in transit | Status page |
| Try it | Visit GuruFocus | Visit MesoSim |
Where each one shines
What GuruFocus and MesoSim each do best.ShowHide
Where each one shines
What GuruFocus and MesoSim each do best.What GuruFocus does best
- Research coverage for global stocks with long historical financials, valuation data, charts, comparisons, market valuation indicators, economic indicators, industry data, and company-level fundamentals.
- The All-in-One Screener with hundreds of filters across fundamentals, valuation, profitability, growth, dividends, guru holdings, insider trades, predefined value screens, custom filters, saved screens, and downloads.
- ETF Screener and ETF GF Scores for filtering and comparing more than 5,000 U.S.
- Corporate and government bond screening by yield, maturity, ratings, coupon structure, outstanding amount, issuer, and industry, plus company-level bond tabs.
- Backtest screener strategies across many countries with configurable stock count, ranking metric, sort order, date range, and rebalance frequency; current membership terms give Premium the latest five years and Premium Plus/Professional history back to 2006.
What MesoSim does best
- Backtest options strategies through a low-code Strategy Definition workflow covering entries, exits, adjustments, fills, commissions, slippage, margin, and monitoring.
- Simulate documented instruments such as SPX, BTCUSD, ETHUSD, and higher-tier RUT, VIX, and GLD options where plan access supports them.
- Views for reviewing 2D and 3D risk graphs, PnL, Greeks, and trace collection from the Position Monitor.
- Tools for exploring implied volatility surfaces with overlays such as open interest, volume, bid-ask spread, and Greeks where available.
- Black-Scholes-Merton valuation functions and solver tools inside strategy logic for projecting future Greeks, PnL, roots, and optimization points.
Every detail we compared
Every tracked attribute for GuruFocus and MesoSim, side by side.ShowHide
Every detail we compared
Every tracked attribute for GuruFocus and MesoSim, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsBondsMutual FundsOptionsFundsOther | OptionsCryptos |
Experience | BeginnerIntermediateAdvanced | IntermediateAdvanced |
Target audience | Retail TradersPro RetailLong-term InvestorsValue InvestorsQuality InvestorsDividend InvestorsAnalystsQuants/Developers+3 more | Pro RetailAlgo TradersDay TradersSwing TradersQuants/DevelopersInstitutional Investors |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North America |
Coverage details | Identifiers: Ticker and CIK | Identifiers: Ticker |
| Data | ||
Data freshness | End of Day | Not specified |
Data granularity | EOD | Minute |
Pricing sources | ExchangeVendorModel | Not specified |
Data partners | QuoteMediaMorningstarRefinitivFREDSEC / local regulators | CboeDeribit |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKeySDKs: Python and GoDocs | Auth: APIKeyDocs |
Import methods | CSVBrokerOAuthManual | Not specified |
Integrations | GuruFocus Data APIGuruFocus MCP ServerGuruFocus Excel Add-inGuruFocus Google Sheets Add-onSnapTrade | MesoLive |
Export formats | CSVExcelJSON | JSON |
| Plans & trust | ||
Security & compliance | Status pageEncryption in transit | Status page |
Capability signals | Custom formulasRanking backtestsUniverse builderFactors: Value, Quality, Momentum, and GrowthBroker syncMulti-currencyYield curvesCredit ratings+1 more | Multi-leg optionsGreeksIV surfaceStrategy backtests: Vertical and IronCondor |
Vendor & support | GuruFocus.com, LLCCountry: United StatesFounded 2004Support: Email, Chat, Phone, and Forum | Deltaray Research Ltd.Support: Email and Chat |
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 | Freeportfolio limit: Up to 3 portfolios with 25 stocks each for free members · data api requests: 100/month included in the Free API package · +1 more | Freefree runs: 25 |
| Entry paid plan | $549/yr≈ $45.75/mo“Premium”billing: Annual only · data api requests: 200/month included with Premium membership · +2 more | $1000/yr≈ $83.33/mo“Standard”backtests: Unlimited · paper trading accounts: 1 |
| Tier 2 | $1398/yr≈ $116.50/mo“Premium Plus”billing: Annual only · data api requests: 500/month included with Premium Plus membership · +2 more | $1250/yr≈ $104.17/mo“Advanced”backtests: Unlimited · paper trading accounts: 2 |
| Tier 3 | $200/mo“Data API Builder”billing: Billed annually · monthly request limit: No limit · +12 more | — |
| Tier 4 | $2448/yr≈ $204/mo“Professional”billing: Annual only · data api requests: 2,000/month included with Professional membership | — |
| Tier 5 | $2000/mo“Data API Commercial”billing: Billed annually · monthly request limit: No limit · +1 more | — |
| Top plan | $100 per unit“Data API Pay As You Go”initial top up: $100 credit · stock daily prices: $0.05/request · +16 more | — |
| Custom / enterprise | Contact sales“Custom API / Enterprise Package” | Contact sales“FundPro” |
| Free trial | 7 days | — |
Questions we keep getting
What's the difference between GuruFocus and MesoSim?
GuruFocus leans toward stock ideas, screeners, and ETF screeners, while MesoSim puts more weight on backtesting, options, and data visualizations. They overlap in 6 categories, so for most people it comes down to workflow preference and price.
How much do GuruFocus and MesoSim cost?
Good news: both GuruFocus and MesoSim have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: GuruFocus or MesoSim?
GuruFocus is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Can I use GuruFocus or MesoSim on my phone?
GuruFocus lists a dedicated mobile app, so it travels better. MesoSim doesn't list a dedicated mobile app; its documented access is web and API.
Do GuruFocus and MesoSim have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose GuruFocus or MesoSim?
It depends on what you're after. Pick GuruFocus if stock ideas and screeners matter to you; go with MesoSim if you'd rather have paper trading. And if you only need the basics both share, let price decide.
What asset classes do GuruFocus and MesoSim cover?
Both cover options. GuruFocus also handles stocks, ETFs, and bonds. MesoSim adds cryptos on top.
Which covers international markets: GuruFocus or MesoSim?
GuruFocus has documented international coverage (North America, Europe, APAC, LatAm, and more), so it's the safer bet if you hold non-US stocks. MesoSim is more region-specific, mainly North America.
Can I export data from GuruFocus and MesoSim?
GuruFocus exports to CSV and Excel. MesoSim is stingier about getting data out.
Is GuruFocus or MesoSim better for day trading?
MesoSim is the one positioned more for active traders. GuruFocus is the better fit if you care less about fast trading workflows and more about a calmer research process.
Which has a better stock screener: GuruFocus or MesoSim?
GuruFocus has a stock screener for surfacing ideas; MesoSim doesn't, and focuses its energy elsewhere.
Can I track my portfolio with GuruFocus or MesoSim?
GuruFocus handles portfolio tracking. MesoSim is really a research tool; you'd track your portfolio elsewhere.
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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.