What 3lines.org actually does (from store listing)
Import ePub files that are in Simplified or Traditional Chinese and then have them converted to add a romanization line (pinyin, Sidney Lau, Yale), and a native language line (English, Spanish). The document can then be converted to PDF. It is also possible to copy Chinese text and paste it into the app. In addition, you can copy a URL from the Safari web browser, and paste in the URL to pull up the entire web page in the app and then convert it to 3 lines.
Comparable Android apps
The five apps in Tools with the closest revenue to 3lines.org. Click any to see its detail page.
Each forecast combines App Store rating, ratings count, monetisation model, pricing tier, IAP signals and ad-supported flag.
The base estimate is then multiplied by a per-category scaling factor learned from apps with founder-verified MRR.
Every number on this page comes from public APIs and Bumetric's own snapshot history.
Full methodology covers input variables, accuracy bands per category and how we treat apps without comparable anchors.
See also the live data on 3lines.org's tracker page for current rating, reviews and snapshot timeline.
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