Koyfin is a powerful financial data platform known for its advanced charting, dashboards, and institutional-grade screening tools. SafetyMargin.io focuses specifically on Buffett-style value investing — providing DCF modeling, forensic accounting, and capital allocation analysis rather than broad market data visualization.
Both tools are popular with serious investors. Here is how they compare.
Feature Comparison
| Feature | SafetyMargin.io | Koyfin |
|---|---|---|
| DCF Intrinsic Value Calculator | ✓ | ✗ |
| Multi-Scenario DCF (Bear/Base/Bull) | ✓ | ✗ |
| Margin of Safety Display | ✓ | ✗ |
| Reverse DCF (Market-Implied Growth) | ✓ | ✗ |
| Buffett Signal (Buy/Hold/Sell) | ✓ | ✗ |
| Forensic Accounting (Beneish M-Score) | ✓ | ✗ |
| Altman Z-Score (Bankruptcy Risk) | ✓ | ✗ |
| Sloan Ratio (Earnings Quality) | ✓ | ✗ |
| Owner Earnings (Buffett FCF) | ✓ | ✗ |
| SBC-Adjusted Free Cash Flow | ✓ | ✗ |
| ROIIC (Incremental Capital Returns) | ✓ | ✗ |
| Retained Earnings $1 Test | ✓ | ✗ |
| Buyback Effectiveness Score | ✓ | ✗ |
| Mr. Market Sentiment Gauge | ✓ | ✗ |
| Insider Transaction Tracking | ✓ | Paid only |
| Investment Checklist & Notes | ✓ | ✗ |
| Historical Fundamentals Charts | ✓ | ✓ |
| Advanced Charting & Dashboards | ✗ | ✓ |
| Stock Screener | ✗ | ✓ |
| Custom Watchlists | ✗ | ✓ |
| Macro Economic Data | ✗ | ✓ |
| Global Stock Coverage | ✗ | ✓ |
| 100% Free Access | ✓ | ✗ |
Where SafetyMargin.io Stands Out
Value Investing Toolkit
Koyfin is a data visualization powerhouse — beautiful charts, customizable dashboards, and powerful screening. But it does not provide the specific analytical tools value investors need to make buy/sell decisions.
SafetyMargin.io fills that gap. The three-scenario DCF helps you estimate intrinsic value under different assumptions. The Reverse DCF reveals what growth the market is pricing in. The margin of safety gauge quantifies the discount to fair value. Together, these tools form a complete valuation workflow.
Forensic Accounting
Koyfin does not assess financial statement quality. SafetyMargin.io automatically runs:
- Beneish M-Score — detects potential earnings manipulation
- Altman Z-Score — quantifies bankruptcy risk
- Sloan Ratio — checks if reported earnings are backed by cash flow
These forensic tests help you avoid value traps before committing capital.
Capital Allocation Analysis
SafetyMargin.io computes Owner Earnings, ROIIC, SBC-Adjusted FCF, the $1 Retained Earnings Test, and Buyback Effectiveness — metrics that reveal whether management is creating or destroying value. Koyfin shows the underlying data but does not compute these specific metrics.
Completely Free
Koyfin's free tier is limited — advanced features require a paid plan ($35–$75/month). SafetyMargin.io provides every feature at no cost.
Where Koyfin Stands Out
Advanced Charting
Koyfin's charting capabilities are among the best in the industry. You can overlay multiple financial metrics, compare peers, and build custom dashboards — far beyond what SafetyMargin.io offers.
Stock Screener
Koyfin provides a detailed screener with hundreds of financial metrics and custom filter combinations. SafetyMargin.io does not have a screener.
Global Coverage and Macro Data
Koyfin covers global stocks, ETFs, mutual funds, and macro-economic indicators. SafetyMargin.io focuses on S&P 500 individual stock analysis.
Customizable Dashboards
Koyfin lets you build personalized dashboards with exactly the charts, metrics, and watchlists you want. This flexibility is ideal for investors who monitor many securities simultaneously.
Pricing
| SafetyMargin.io | Koyfin | |
|---|---|---|
| Free tier | Full access to all features | Limited features |
| Basic | N/A | $35/month |
| Plus | N/A | $55/month |
| Pro | N/A | $75/month |
Who Should Use Which?
Use both together. They complement each other well:
- Koyfin for charting, screening, and monitoring your watchlist
- SafetyMargin.io for deep valuation analysis when deciding whether to buy
Choose SafetyMargin.io when you want to:
- Calculate intrinsic value with multi-scenario DCF modeling
- Run forensic accounting checks on financial statements
- Evaluate management through capital allocation metrics
- Use Buffett-style frameworks at no cost
Choose Koyfin when you need:
- Advanced charting with peer comparisons
- Custom dashboards and watchlists
- A powerful stock screener
- Global market and macro-economic data
Try It Yourself
Search for any stock on AAPL, MSFT, or KO and see the full analysis — completely free.