Sumi - AI Manga Translator verdict
Sumi is the right pick for a reader who wants to follow Japanese, Korean, or Chinese titles without waiting for official translations, and who cares that the page still looks like a manga page rather than a document with text boxes pasted over it. The free tier is genuinely usable at 5 claimable pages per day, but the web and iOS subscriptions are completely separate, so a reader who switches between phone and browser will pay twice. Anyone who needs bulk export for fan releases or wants a tool that works across every device under one subscription should look elsewhere.
Strengths
Inpainting-plus-retypesetting pipeline produces pages that look drawn rather than overlaid, including vertical Japanese bubble layouts, which most generic image translators do not handle.
Tested and confirmed working on 110 named manga publisher sites, with the Chrome extension translating pages in place on sites like Shonen Jump+ and MANGA Plus without any file upload.
Weaknesses
Web and iOS subscriptions are completely separate with no shared page balance, meaning a reader who uses both the browser and the iPhone app must pay for two independent plans.
Source language support is limited to Japanese, Korean, and Chinese; there is no path to translate, say, a French or Italian doujinshi into English, even though the site mentions such use cases in its marketing copy.
Manga Translator: AI 만화 번역기 verdict
Best suited for scanlation teams and indie publishers who need to process full chapters in bulk across many languages without installing software. The free daily check-in credit system gives very little runway compared to Sumi's personal-reading focus, and the per-page credit cost climbs fast if you switch to premium translation models. Solo readers who just want to read a chapter or two should look elsewhere.
Strengths
Three selectable translation backends (GPT-4o, Google Translate, Papago) let users trade cost against quality on a per-job basis, a level of model choice most competitors do not offer.
Credit packs never expire and subscription credits reset each billing cycle, so teams can buy in bulk at the Max pack rate of $0.003 per credit without worrying about losing unused credits.
Weaknesses
The free tier is gated behind a daily attendance check-in system rather than a fixed upfront credit grant, making it nearly impossible to evaluate the tool's quality on a real chapter without paying first.
Credit consumption varies by translation model chosen, but the pricing page does not publish a clear per-page credit cost table for each model, so actual per-page costs require trial-and-error to estimate.
