HiWord.AI vs Plain850:核心英文 850詞
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HiWord.AI
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HiWord.AI helps you learn English words you can actually use: a few new words each day, met again in an article, a sentence to read aloud and a conversation. Learning one word well beats memorizing a hundred. HiWord gives you a small set of words each day and carries them from flashcards to practice, reading and speaking, so "I recognize it" becomes "I can say it." TODAY'S PATH Three steps a day: flashcards, practice, and an article written with your words. Shadowing and AI Talk are there whenever you want to speak, and they earn XP too. AI TALK Chat with five AI partners, each with their own personality, voice and level, from a patient beginner coach to a sharp investor. Talk about your day and use today's words. Every session ends with a short review of what went well and what to rephrase. SHADOWING WITH FEEDBACK Read a sentence after the native audio and get instant feedback on accuracy, rhythm, stress, fluency and clarity, down to the word and the sound. READING AND DAILY NEWS Read articles written with the words you're learning, with bilingual support, full-text audio and tap-to-look-up. A short Daily News brief in plain English arrives every morning. PRACTICE Sentence tiles, listening, matching and fill-ins. When you pick a wrong answer, HiWord tells you what that word means. ASK HIWORD Ask in English or Chinese. Look up a word, a phrase or a whole sentence, find natural ways to say what you mean, check whether your own sentence sounds right, and see how two words differ. IMPORT YOUR OWN ENGLISH Bring in links, text, photos, documents and audio, or share straight from Safari and other apps. HiWord turns them into articles you can read, listen to and practice with. GAMES You Describe, AI Guesses: see a secret word and give clues in English until the AI guesses it. No timer, so take your time. LEADERBOARD A weekly board that resets every Monday. Cheer on the people learning with you. WORDBOOKS Daily English, Ogden 850, KET, PET, IELTS, Gaokao, CET-4, CET-6, Business, Crypto, PSLE, World Cup, F1 and more. Every word comes with phonetics, part of speech, Chinese meaning and example sentences. ON IPHONE, IPAD AND APPLE WATCH Optimized for iPhone Duo: learn on the full inner display and keep your place when you fold or unfold. Home Screen and Lock Screen widgets show what to study next, and you can review cards on Apple Watch. Your progress syncs across devices, and core learning works offline. HIWORD PRO HiWord is free to download, and flashcards and practice are free. With HiWord Pro you can use AI chats, shadowing packs and imports without holding back. HiWord Pro is an auto-renewable subscription. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hiword.ai/privacy Support: support@hiword.ai Stop studying. Start using.
Plain850:核心英文 850詞
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Plain850 是一個專注於 850 個核心英文詞的簡潔學習工具。 它不是要你背更多、更難的單字,而是幫你把最常見、最基礎、最容易用錯的英文詞重新學穩。 很多英文學習者其實已經認識不少單字,但在真正閱讀、寫作或表達時,仍然會卡在 make、do、get、take、have、in、on、with 這類核心詞的用法。Plain850 的目標,就是讓你用更安靜、更清晰的方式,回到英文的基礎。 主要功能: ・學習 850 個核心英文詞 ・透過「850 單字書」將學習進度視覺化 ・按分類瀏覽單字 ・查看中文、日文、西班牙文說明 ・閱讀簡單 A2 英文文化文章 ・閱讀時可點按單字查看解釋 ・收藏想重溫的單字 ・使用測驗模式檢查記憶 ・支援英文發音 ・無需登入 ・可離線使用 ・免費使用,沒有廣告 Plain850 適合: ・想重新打好英文基礎的人 ・認識很多單字,但核心詞用得不穩的人 ・正在學英文的中文、日文或西班牙文使用者 ・想用碎片時間安靜複習英文的人 ・不喜歡複雜介面、廣告或過度遊戲化學習工具的人 Plain850 的設計理念很簡單: 不是背更多字,而是先把最重要的字學深。 從 850 個核心詞開始,慢慢建立更穩定的英文基礎。
Screenshots
Verdict
The clearest difference is in-app purchases: Plain850:核心英文 850詞 at none against HiWord.AI's 1. Plain850:核心英文 850詞 also leads on iOS requirement (13.0 vs 18.0). HiWord.AI's advantage is update cadence (daily vs every 2 weeks). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HiWord.AI sells 1 in-app purchase, starting at $39.99 per year. Plain850:核心英文 850詞 asks for nothing beyond the download.
HiWord.AI ships an update daily, Plain850:核心英文 850詞 every 2 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | HiWord.AI | Plain850:核心英文 850詞 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Vinehoo.com | Lok Wai |
In-app purchases
HiWord.AI
- HiWord.AI Pro$39.991 Year
Plain850:核心英文 850詞
No in-app purchases









