T
Composer vs Koyfin
Pricing, features, platforms and who each one suits — side by side.
C
Choose Composer if…
- you want the lower entry price ($10/mo vs $39/mo)
- you need an API to build on
- you're in its core audience: self-directed retail investors, algorithmic trading hobbyists
K
Choose Koyfin if…
- you work on iOS, Android
- you're in its core audience: independent investors, financial advisors
Side by side
Feature Composer Koyfin
Pricing modelFreemiumFreemium
Starting price$10/mo$39/mo
Free plan
Free trial
API
Open source
PlatformsWeb, APIWeb, iOS, Android
CategoryAI Investing & Stock ResearchAI Investing & Stock Research
CompanyComposerKoyfin
Based in——
Founded2020—
Part of——
Key features
C Composer
- AI strategy creation from natural-language prompts
- Visual no-code strategy editor with conditional logic
- Backtesting against benchmarks, including fees and slippage
- Automated trade execution and rebalancing
- Pre-built strategy library
- Community publishing and remixing of strategies
- Traditional and Roth IRA support
- API for data, backtests and trading (Pro)
K Koyfin
- Customizable dashboards and advanced charting
- Equity screener with 5,900+ filter criteria
- Macro dashboards and global economic data
- Earnings transcripts with keyword search
- Portfolio analytics and model portfolios
- Client proposals and reports for advisors
- Custodian and PMS integrations
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Composer
Starter$0
Advanced$10/mo
Pro$32/mo billed yearly ($384/year)
BusinessCustom
Koyfin
Free$0
Plus$39/mo
Premium$79/mo
Advisor Core$209/mo
Advisor Pro$299/mo
TeamsCustom
Strengths and limitations
Composer
- Free Starter plan includes unlimited building and backtesting
- No commissions or management fees advertised
- Pro plan includes API access
- IRA accounts supported
- Free plan automates only one strategy
- API access requires the Pro or Business plan
- Regulatory fees from FINRA and the SEC still apply
- Business pricing requires a sales call
Koyfin
- Free plan includes advanced charting and macro dashboards
- Broad data coverage across asset classes and 40 countries' yields
- 30-day satisfaction guarantee with full refund
- Annual billing saves up to 30%
- Advisor features start at $209/month
- Free plan limited to 2 watchlists, screens and dashboards
- No public API mentioned
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy