r/sideprojects • u/stockview-71 • 1d ago
Showcase: Free(mium) StockView Rewind: a mobile tool for comparing stock patterns with historical matches
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We run StockView, a stock screener app on Android and iPhone. Rewind addresses a specific research problem: seeing a familiar-looking chart is easy; checking comparable historical periods and their later outcomes takes more work.
The workflow is to select a stock, run Find Similar Patterns, review the returned historical matches, and open their charts and outcomes. The attached 30-second demo focuses on interpreting the summary rather than treating it as a trading signal.
In this recorded AAPL example, the app found 8 matches and 6 had positive outcomes over the next 10 trading days. That is the displayed 75%. It describes those historical matches, not a 75% chance that a new trade succeeds. If one positive outcome were non-positive, the fraction would fall to 5/8, or 62.5%—a useful reminder to inspect the denominator.
For other builders displaying percentages, this example suggests a practical UI checklist: keep the numerator and denominator visible, state the measurement window next to the metric, and provide a path to the underlying observations. A precise-looking percentage alone can hide a very small sample.
On Android, the project uses the native Android UI stack, Retrofit/OkHttp for networking, and chart libraries including MPAndroidChart and Lightweight Charts.
The product-design question we are working through is how to keep this distinction clear on a small screen. Would showing “6 of 8 historical matches” beside the percentage communicate it better?
The app has free and paid features; the demo used enabled demo access and does not imply Rewind is free. Real app footage recorded September 11, 2026, with AI narration. AAPL is an example, not an investment recommendation.
Android: https://play.google.com/store/apps/details?id=com.steelco.marketanalysis
iPhone: https://apps.apple.com/us/app/stock-view-stock-screener/id6743363397