★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: BUX checked July 17, 2026
Tool Comparison
BUX vs Koyfin
Pick BUX instead if
BUX
Transaction-priced · Fees vary by offer and jurisdiction · Mobile
- You care about brokerage and downloadable tax reports, things Koyfin doesn't offer
Start here
Koyfin
Free • From $39/mo · Web · Mobile
- You'd rather start free and only pay if you outgrow it
- Delayed quotes won't cut it; you need real-time data
- You care about screeners, ETF screeners, and data visualizations, things BUX 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
BUX and Koyfin cover a lot of the same ground (2 shared categories, portfolio and watchlist), so for the basics you won't go far wrong with either. Koyfin simply does more: 20 categories to BUX's 4, including screeners, ETF screeners, and data visualizations. BUX counters by keeping things simpler.
What readers say
BUX
Vote once to reveal the community verdict.
Koyfin
Vote once to reveal the community verdict.
Key differences at a glance
- Free plan
- Koyfin
- Broader coverage
- Koyfin20 vs 4 categories
- Real-time data
- Koyfin
- Asset coverage
- KoyfinAdds mutual funds and closed-end funds
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 | Transaction-priced · Fees vary by offer and jurisdiction | Free • From $39/mo |
Free tier | No | Yes |
Free trial | — | — |
Plan limits | — | 24 limits: Free: watchlists: 2, Free: screens: 2 +22 more |
| Platforms & access | ||
Web app | No | Yes |
Mobile app | Yes | Yes |
API access | No | No |
Broker sync | — | Yes |
Integrations | — | Schwab, Altruist +6 more |
| Audience & fit | ||
Experience level | Beginner, Intermediate | Beginner, Intermediate, Advanced |
Best for | — | Retail Traders, Pro Retail +6 more |
Categories covered | 4 | 20 |
Regions | Europe | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | — | Latency: Real-time, 15-min Delayed, and End of Day and Adjustments: TotalReturn |
Data partners | — | 6 partners: S&P Global Market Intelligence, Morningstar +4 more |
Capabilities | — | 7 signals: Universe builder, Broker sync +5 more |
Security | — | 4 signals: SOC2, Data residency: US +2 more |
| Try it | Visit BUX | Visit Koyfin |
Where each one shines
What BUX and Koyfin each do best.ShowHide
Where each one shines
What BUX and Koyfin each do best.What BUX does best
- European and U.S. stocks, ETFs and ETCs through a mobile brokerage account.
- Fractional stocks, ETFs and ETCs through market orders and Investment Plans.
- Commission-free monthly Investment Plan purchase execution on all three tiers.
- Basic, Plus and Prime tiers with distinct order allowances, service fees and FX markups.
- Interest-bearing ABN AMRO Clearing Bank cash on Plus and Prime under current limits.
What Koyfin does best
- Tools for building customizable dashboards, watchlists, charts, and market monitors across global equities, ETFs, funds, fixed income, FX, commodities, crypto, indices, and economics.
- Screening for more than 100,000 global securities with thousands of criteria, with stock and ETF screening on paid plans and mutual-fund screening in Advisor tiers.
- Advanced charts with technical indicators, fundamentals, valuation measures, analyst estimates, price targets, templates, sharing, and downloads where vendor licenses allow.
- Research coverage for companies with financial analysis pages, customizable financial templates, news, filings, transcripts, analyst data, short interest, and AI transcript summaries on paid plans.
- Tracking portfolios with grouping, notes, summary rows, alerts, custom data series, uploaded CSV price history, and mobile portfolio monitoring.
Every detail we compared
Every tracked attribute for BUX and Koyfin, side by side.ShowHide
Every detail we compared
Every tracked attribute for BUX and Koyfin, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksETFsMutual FundsClosed-End FundsBondsCurrenciesCommoditiesFutures+1 more |
Experience | BeginnerIntermediate | BeginnerIntermediateAdvanced |
Target audience | Not specified | Retail TradersPro RetailInstitutional InvestorsAnalystsAsset ManagersFinancial AdvisorsRIAs / Wealth FirmsStudents/Researchers |
Regions | Europe | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | 8 countriesIdentifiers: Ticker and ISIN | Identifiers: Ticker |
| Data | ||
Data freshness | Not specified | Real-time15-min DelayedEnd of Day |
Data partners | Not specified | S&P Global Market IntelligenceMorningstarFREDTrading EconomicsTrueFXPolygon.io |
| Access & integrations | ||
Import methods | Not specified | ManualCSVCustodian |
Integrations | Not specified | SchwabAltruistTradePMRInteractive BrokersBlack DiamondOrionFidelityAddepar |
Export formats | PDF | CSVImagePDF |
| Plans & trust | ||
Security & compliance | Not specified | SOC2Data residency: USEncryption at restEncryption in transit |
Capability signals | Not specified | Universe builderBroker syncYield curvesAI summaries: TranscriptsHouseholdingModel portfoliosClient reporting |
Vendor & support | BUX B.V.Country: NetherlandsSupport: Chat and Email | Koyfin, Inc.Country: United StatesFounded 2016Support: Email |
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“BUX Basic” | Freewatchlists: 2 · screens: 2 · +5 more |
| Entry paid plan | €2.99/mo“BUX Plus” | $39/mo“Plus”financials years: 10 · estimates years: 10 · +5 more |
| Tier 2 | €7.99/mo“BUX Prime” | $79/mo“Premium”alerts: 500 · custom securities: Unlimited |
| Tier 3 | — | $209/mo“Advisor Core”alerts: 500 · reports per month: 10 · +2 more |
| Top plan | — | $299/mo“Advisor Pro”alerts: 500 · reports per month: 200 · +2 more |
| Custom / enterprise | — | Contact sales“Teams” |
Questions we keep getting
What's the difference between BUX and Koyfin?
BUX leans toward brokerage, portfolio, and watchlist, while Koyfin puts more weight on screeners, ETF screeners, and data visualizations. They overlap in 2 categories, so for most people it comes down to workflow preference and price.
Is BUX or Koyfin free to use?
Koyfin has a free tier, so you can get started without paying anything. BUX is paid-only. If budget matters, start with Koyfin and see how far it takes you before opening your wallet.
Which is better for beginners: BUX or Koyfin?
Honestly, neither is aimed at beginners. Expect a learning curve either way; that's the trade-off for the depth they offer.
Should I choose BUX or Koyfin?
It depends on what you're after. Pick BUX if brokerage and downloadable tax reports matter to you; go with Koyfin if you'd rather have screeners and ETF screeners. And if you only need the basics both share, let price decide.
What asset classes do BUX and Koyfin cover?
Both cover stocks and ETFs. Koyfin adds mutual funds, closed-end funds, and bonds on top.
Does BUX or Koyfin have real-time data?
Koyfin offers real-time data, which matters if you trade actively. BUX 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 BUX and Koyfin?
Koyfin exports to CSV. BUX is stingier about getting data out.
Which has a better stock screener: BUX or Koyfin?
Koyfin has a stock screener for surfacing ideas; BUX doesn't, and focuses its energy elsewhere.
Can I track my portfolio with BUX or Koyfin?
Yes, both do portfolio tracking: holdings, performance, and allocation in one place.
Keep researching
More comparisons to check
Other tools you might like
Keep Exploring
Feedback
Spot stale pricing, missing features, or a comparison that feels off? Send feedback on the verdict, table, alternatives, or recommendation.
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.