PaperStreet
A daily blind-chart puzzle app that shows you five unlabeled S&P 500 charts and scores your up/down calls against conviction, then turns each session into an AI tutor recap of what patterns you missed.
Aspiring retail traders and finance hobbyists building real chart-reading intuition
- Five daily blind charts with up/down calls and a paper-money conviction stake
- Post-session AI mentor that names the indicator moves you missed (RSI, SMA, volume)
- Weekly 'tape review' generated from your last five sessions with pattern study links
- Private leaderboards with friends and study groups, plus sharable streak cards
Read the Tape hit the HN front page with 40+ points and 29 comments, proving strong appetite for Wordle-style finance training; brokerages are pulling back on gamified education so an independent app has room.
Read the Tape (readthetape.cc) is already live and the direct format match; its own 14-day report shows only 6,012 total calls (~430/day), indicating modest — not viral — demand for this exact mechanic despite the 40-43 point HN post.The Tape Report No. 1 — the opening fortnight — Read the Tape ↗Show HN: Read the Tape - Wordle for daytrading, five blind S&P 500 charts a day ↗
Crowded: Read the Tape is a head-to-head copy, plus ChartGame, TradingGame, ChartMini, ChartingPark, TradeRange (Stockle/CandleDojo), and Investopedia Stock Simulator all compete in the same 'learn via simulated charts' niche — only the AI-tutor recap is a thin differentiator.ChartGame | Stock Market Simulation App | Learn How To Beat The Market ↗Stock & Day Trading Simulator | Trading Game ↗TradeRange — Portfolio Analytics & Daily Stock Market Games ↗
Read the Tape is explicitly free/no-signup and Investopedia Simulator is free; TradingGame and ChartGame are freemium with premium tiers, but willingness-to-pay for a daily blind-chart puzzle (vs. a full simulator with leaderboards) is unproven and the established free option will anchor price expectations low.Read the Tape (@Readthetapegame) / Posts / X ↗Simulator - Investopedia Stock Simulator ↗Trading Game Reviews ↗
Wordle-style daily puzzles typically ride a viral spike then decay within months; trading-education has long-term demand, but a clone entering a market where Read the Tape already captured the first-mover novelty has elevated churn risk.Show HN: Read the Tape - Wordle for daytrading, five blind S&P 500 charts a day ↗
Very buildable: historical S&P 500 OHLC data is freely available (Yahoo/Polygon), chart normalization/rendering is standard, and the AI recap is a thin LLM wrapper — a single developer can ship an MVP in days.Read the Tape (@Readthetapegame) / Posts / X ↗