Composer

Composer is a Web and iOS automated trading platform and investment app for individual investors who want to build, test, and run trading algorithms without coding.

Key capabilities include:

• AI-assisted strategy creation from plain-English goals and risk preferences, plus a no-code visual editor to modify logic and parameters
• Backtesting and benchmarking to evaluate strategies before deploying them, including modeled outcomes that account for fees and slippage
• Automated execution and rebalancing, with the platform placing trades and maintaining portfolio allocations end-to-end
• Community strategy discovery, with access to 3,000+ pre-built, editable strategies to copy or remix

Pricing: Freemium with a free test and a simple fixed monthly subscription (one flat fee for unlimited automated trading across accounts).

What makes it notable: It combines strategy creation, backtesting, brokerage account funding, and fully automated trading execution in one app, supporting stocks and ETFs with both automated and direct trading modes.