VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Sunday, May 31, 2026
Tool Comparison · Sunday, May 31, 2026
Bank of Japan (BOJ) vs okama
Bank of Japan (BOJ) vs okama: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
Bank of Japan (BOJ)
boj.or.jp
Best for central bank watcher, and calendar
- Pricing
- Free
- Platforms
- Web, API
okama
okama.io
Best for quant, and portfolio
- Pricing
- Free
- Platforms
- Web, API
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
Bank of Japan (BOJ) if…
- You need home page “what’s new” feed includes an rss link and publishes downloadable releases (commonly pdf and xlsx).
- You need boj time-series data search enables searching, downloading, and graph drawing for ~200,000 long-term boj time-series data items.
- You need boj launched an api service for boj time-series data search on february 18, 2026, with statistical time-series access in formats including json and csv.
- You need time-series data search supports finding series by statistics category, keyword/name of series, or exact series codes; selection can include up to 250 series; users can save the list of selected series codes.
Choose
okama if…
- You need interactive efficient frontier (mean–variance) widget for quick visualization.
- You need compare-assets widget covering returns, drawdowns, cvar, and correlations.
- You need portfolio widget built on adjusted monthly data for risk/return analysis.
- You need python library supports constrained mean–variance optimization, multi-period efficient-frontier optimization with rebalancing constraints, contribution/withdrawal cash-flow modeling, and advanced risk metrics such as var, cvar, semideviation, and drawdowns.
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | Bank of Japan (BOJ) | okama |
|---|---|---|
Asset types | BondsCurrenciesOther | StocksETFsCommoditiesCurrenciesMutual Funds |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | APAC | North AmericaEuropeAPACMiddle East |
Data freshness | Not specified | End of Day15-min Delayed |
API access | REST | REST |
Export formats | CSVExcelJSONPDF | Not specified |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
Bank of Japan (BOJ)
—
Starting price
Plans & pricing
Tool
okama
—
Starting price
Plans & pricing
Coverage overlap
Categories where both tools offer overlapping coverage.
Categories covered by Bank of Japan (BOJ) only.
Categories covered by okama only.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between Bank of Japan (BOJ) and okama?
Bank of Japan (BOJ) focuses on Central Bank Watcher, Calendar, and Alerts while okama specializes in Quant, Data Visualizations, and Portfolio. They overlap in 4 categories, so choose based on your preferred workflow and pricing.
How much do Bank of Japan (BOJ) and okama cost?
Good news—both Bank of Japan (BOJ) and okama offer free plans. You can try each platform without commitment and only pay when you need premium features.
Do Bank of Japan (BOJ) and okama have APIs?
Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.
Should I choose Bank of Japan (BOJ) or okama?
Choose Bank of Japan (BOJ) if you need Home page “What’s New” feed includes an RSS link and publishes downloadable releases (commonly PDF and XLSX)., and BOJ Time-Series Data Search enables searching, downloading, and graph drawing for ~200,000 long-term BOJ time-series data items.. Go with okama if Interactive Efficient Frontier (mean–variance) widget for quick visualization., and Compare-assets widget covering returns, drawdowns, CVaR, and correlations. better fits how you invest.
What asset classes do Bank of Japan (BOJ) and okama cover?
Both cover Currencies. Bank of Japan (BOJ) also includes Bonds, and Other. okama adds coverage for Stocks, ETFs, Commodities, and Mutual Funds.
Can I export data from Bank of Japan (BOJ) and okama?
Bank of Japan (BOJ) supports data exports to CSV, Excel, JSON, and PDF. okama has more limited export options.
Can I track my portfolio with Bank of Japan (BOJ) or okama?
okama offers portfolio tracking features. Bank of Japan (BOJ) is more focused on research and analysis.
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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.