# SUFX: Learn English by Reading — Dictionary, vocabulary & AI > Dictionary, vocabulary & AI (iPhone/iPad app by Ilia Gavrichenko.) - Source: https://appshunter.io/ios/app/sufx-learn-english-by-reading/id6747918428 (this page in markdown: same URL + `.md`) - Developer: [Ilia Gavrichenko](https://appshunter.io/developer/1823404237) - Category: Education, Reference - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 16.4 · 76 MB - Languages: American English - Released: 2026-06-05 - Data updated: 2026-08-22 - User reviews in markdown: https://appshunter.io/ios/app/sufx-learn-english-by-reading/id6747918428/reviews.md ## What is SUFX? SUFX is a deep, AI-powered way to learn English — not just translate words, but understand and remember them. Most learners look a word up and forget it a week later. SUFX turns every word you meet into lasting vocabulary: search it, see it in real context, save it, and practice until it sticks. For example, SUFX can tell the difference between fine in "a fine day," "a fine distinction," and "pay a fine" from the sentence context. WHAT YOU GET • Ultra-detailed dictionary — meanings in context, IPA pronunciation (US & UK), CEFR level, frequency, word forms, collocations, synonym nuances, phrasal verbs, register, etymology, and learning tips. • Smart context search — understand what a word really means in the sentence where you found it. • Read in the original — public-domain English books, plus your own EPUB, FB2, and TXT files. Use a modern reader with themes, fonts, text size, and layout settings. Tap any word to translate it in context, ask the AI tutor, or save it. • Build lasting vocabulary — save the words you meet and review them at the right time with flashcards and fill-the-gap exercises. Track progress, streaks, and mastery over time. • AI tutor (Ask AI) — ask about any word or sentence: grammar, nuance, register, or how to use it. • AI writing practice — write short essays and get clear, exam-style feedback: detailed scores, marked mistakes with explanations, and words to learn next. • Your learning toolkit — curated word collections, custom lists, saved notes, pronunciation audio, instant translation, progress statistics, and daily streaks. BUILT FOR SERIOUS LEARNERS SUFX is for B1–C2 learners who want depth, context, and steady progress. SUFX is free to download. A subscription unlocks higher daily limits, advanced review modes, and custom reading themes. Subscriptions renew automatically and can be managed or cancelled in your App Store account settings. Terms of Use and Privacy Policy are available in the app. Questions? Visit https://sufx.app/support or email support@sufx.app. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | SUFX Premium (Monthly) | $2.99 | per month | | SUFX Premium (Yearly) | $24.99 | per year | ## Version history (last 5 releases) ### 1.6 — 2026-08-11 • Improved: All pop-up panels now share one look, and no longer end under the home indicator • Improved: Home fills in section by section while it loads, instead of jumping into place • Improved: VoiceOver names every form field, announces loading, and reaches the buttons inside list rows • Fixed: Flashcards no longer show the answer before you flip the card • Fixed: When something cannot load, the screen says so and offers Try again — instead of looking empty Questions or ideas? support@sufx.app ### 1.5 — 2026-08-05 • New: Set your English level and pick a few topics you like — your collections are ordered to match • New: After a reading session, save every word you looked up at once, then try a quick 3-card review • New: A short guide on Home that always shows your next step • New: Ask AI about any "How to Say It" answer, right where you are • Improved: "How to Say It" has a new look — your own text stays next to the answer, and phrases already in your notes are marked • Improved: Choose what time your daily reminder arrives • Improved: Flashcards show the word in your language on the back • Improved: Clearer sign-up and email confirmation, with a heads-up if your address has a typo • Fixed: Some books would not open, and the app copes better with a slow connection Questions or ideas? support@sufx.app ### 1.4 — 2026-07-09 • New: How to Say It — write a phrase in your language or rough English and get natural ways to say it, ready to hear and save • New: Search in your own language — type a word you know and find the English word for it • Improved: On word pages, see the word in your language above the translation • Improved: Smoother loading animations across the app Questions or ideas? support@sufx.app ### 1.3 — 2026-06-29 • New: Progress screen — see your words, reading, and writing in one place • New: Reading now counts toward your streak, with a daily reading goal • New: After a reading session, review every word you looked up and save the ones you want • Improved: Cleaner word pages — word forms with audio, US/UK pronunciation, and phrasal verbs in their own tab • Improved: Smoother reading, book download progress, and an easier start for new learners Questions or ideas? support@sufx.app ### 1.2 — 2026-06-16 • New: Help & feedback in Profile — contact us by email or Telegram, and rate the app • New: a free trial for Premium — try it before you subscribe • Improved: books open faster and reading feels smoother • Improved: word pronunciation now plays even when your phone is on silent • Fixed: your reading position is saved more reliably, plus many small fixes. Questions or ideas? support@sufx.app ## Apps similar to SUFX | App | Rating | Price | Category | | --- | --- | --- | --- | | [IELTS Reading Test 2026](https://appshunter.io/ios/app/ielts-reading-test-2026/id6777593457) | — | $2.99 | Education | | [Ko'rib Yodla: English with AI](https://appshunter.io/ios/app/korib-yodla-english-with-ai/id6784227857) | — | Free | Education | | [Tildon](https://appshunter.io/ios/app/tildon/id6782762493) | — | Free | Education | | [CFA Exam Prep: Practice](https://appshunter.io/ios/app/cfa-exam-prep-practice/id6781163742) | — | Free | Education | | [Lexio: Vocabulary Flashcards](https://appshunter.io/ios/app/lexio-vocabulary-flashcards/id6753128540) | — | Free | Education | | [IELTS Listening Test 2026](https://appshunter.io/ios/app/ielts-listening-test-2026/id6780904157) | — | $2.99 | Education | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*