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AI Services for Personal Use that Solve "Language Learning"

AI Services for Personal Use that Solve "Language Learning"

Plenty of people get inspired to study a language by an upcoming trip or a favorite overseas show, but don't have the time or money to commit to a classroom. With AI as your conversation partner, you can practice with material tailored to your own interests, whenever suits you. Here you can compare AI tools useful for language learning.

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アタマプラス

atama+

atama+ is an AI-powered learning system from atama plus Inc. (Tokyo, part of the KUMON group since July 2026), provided to cram schools and prep schools. Its AI diagnoses the root cause of each student's stumbling blocks — going back across grade levels — and automatically builds a personalized curriculum. Adopted in over 4,500 classrooms nationwide, including Sundai and Eikoh. Pricing is not public (included in each school's tuition); individuals can also use it through the official atama+ Online Juku from 22,000 yen per month. Japanese-language service.

# 教育# 日本語対応

スピーク

Speak

Speak is a speaking-focused AI English conversation app from San Francisco-based Speakeasy Labs, backed by the OpenAI Startup Fund. You can practice speaking with an AI tutor without limits and get instant feedback on pronunciation and phrasing. 15M downloads worldwide. After a 7-day free trial, Premium starts at 19,800 yen/year (about 1,650 yen/month). Japanese UI and support available.

# AIチャットボット# 音声認識・音声合成# 自己啓発・コーチング# 日本語対応

デッキベース

Deckbase

Deckbase is an AI flashcard app from Yosuke Sakurai, an independent developer in Japan (Code Your Reality). It drafts cards from PDFs, Word files, images, Excel/CSV files, web pages or a chat with AI, adds AI images and text-to-speech audio, and schedules reviews with FSRS spaced repetition. It imports and exports Anki decks (.apkg) and offers a Chrome extension and an MCP server for ChatGPT, Claude and other AI tools. Available on iOS, Android and the web; the official site is available in Japanese. The free plan has unlimited cards (AI limited to an initial 100 credits); Basic is $5.99 a month ($59 a year) and Pro $11.99 a month ($119 a year).

# 教育# 生産性向上# AI-OCR（文字認識）# 日本語対応

ルーラ

Loora

Loora is an AI English conversation coach app from Loora A.I Ltd. (Israel), listed on the Japanese App Store as "AI英会話ルーラ". You speak English in free conversation on any topic or in role-plays where you set your own role, the AI's role and the scenario, and get instant feedback on grammar and pronunciation. It offers translation and a dictionary, a new word every day, and a video-chat-style avatar; the app supports 12 languages including Japanese. Free to download; monthly and yearly subscriptions are in-app purchases with a 7-day free trial.

# AIチャットボット# 音声認識・音声合成# 自己啓発・コーチング# 教育# 日本語対応

プラクティカ

Praktika

Praktika is an AI English conversation and language practice app from Praktika.ai Company (US). You talk by voice with 3D avatar AI tutors that each have their own personality and accent, in free conversation or role-plays, and mistakes in pronunciation, grammar and vocabulary are corrected for each message with a rephrasing and an explanation. It offers 1,000+ lessons including IELTS/TOEFL, business and travel, pronunciation scores, and explanations switchable to Japanese (the app supports 15 languages including Japanese). Free to download; Praktika Premium is an in-app purchase with a 7-day free trial.

# AIチャットボット# 音声認識・音声合成# 自己啓発・コーチング# 教育# 日本語対応

エルサスピーク

ELSA Speak

ELSA Speak is an AI English speaking and pronunciation practice app from ELSA, Corp. (US). It scores the English you speak sound by sound and shows how to fix it, and offers role-play conversations with generative AI plus the Speech Analyzer, which rates a speech on pronunciation, intonation, fluency, grammar and vocabulary and estimates IELTS, TOEFL and TOEIC levels. Free to start; paid plans are ELSA Pro, Premium and Professional (7-day free trial). Its Japanese subsidiary is ELSA Japan G.K.

# AIチャットボット# 音声認識・音声合成# 自己啓発・コーチング# 教育# 日本語対応

エングヘルパー

Eng-Helper

Eng-Helper is an AI English-correction keyboard for iPhone and Android from Float Co., Ltd. of South Korea. In any app—messages, email, social media—you type English (Japanese mixed in is fine) and tap "Correct"; natural English and alternative phrasings appear above the keyboard, and a tap inserts your pick into the text field. It explains why each change was made in 116 languages, including Japanese. The first two weeks are free, then a monthly subscription (¥500 on the Japanese App Store) gives unlimited corrections and explanations.

# 要約・翻訳# 教育# テキスト生成# 生産性向上# 日本語対応

ラクテンエーアイ

Rakuten AI

A free agentic AI assistant provided by Rakuten Group. When you talk to it by chat, voice, or image, specialized agents for Rakuten Ichiba, Rakuten Travel, Rakuten Music, and more search for and suggest products and accommodations, and it can also do AI search, image generation, translation, summarization, and writing. It is available on the web, in its own app, in the Rakuten Ichiba app, and in Rakuten Link, and there is also Rakuten AI for Desktop for HP PCs.

# AIエージェント# AIチャットボット# 生成AI（LLM）# 検索・レコメンド# 小売・EC# 日本語対応

パパゴ

Papago

An AI translation service from NAVER Corp. of South Korea. It translates text, images (camera), voice, conversations, handwriting, documents (PDF and Office) and websites, works offline, and the app handles 14 languages including Japanese, Korean, English and Chinese. The web version (papago.naver.com) and the apps are free. The paid Papago Plus does not store translation data and starts at $9.99/month (Basic).

# 要約・翻訳# AI-OCR（文字認識）# 音声認識・音声合成# 日本語対応

アキュノート

AccuNote

AccuNote is a voice note app for iOS and Android from SEIWA Co., Ltd. (Osaka, Japan). It transcribes in real time while you record, and handles speaker separation, AI summaries, translation in 60 languages, and bilingual recognition that translates between two languages, all in one app. You can also import existing audio and video files. Try it as a guest with no registration or with a free account; the paid Pro plan starts at ¥1,780/month (tax included).

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# 会議翻訳・AI同時通訳# 生産性向上# 日本語対応

デュオリンゴ

Duolingo

The world's most-used language-learning app, learning 40+ languages gamified (500M+ learners). From Japanese you can study EN/KO/ZH/FR/ES/DE/IT/PT plus math, music, and chess. The higher Duolingo Max tier adds AI conversation practice (Roleplay, Video Call, Explain My Answer).

# AIチャットボット# 自己啓発・コーチング# 日本語対応

スピークバディー

An app from appArray, Inc. focused on practicing English conversation with an AI character. Role-play across 1,000+ scenes with an "AI buddy," plus a generative-AI-powered Free Talk feature. It lets you practice speaking anytime and anywhere; 5M+ downloads, App Store 4.6. Offers personalized curricula and a business version, "SpeakBuddy for Business."

# AIチャットボット# 自己啓発・コーチング# 日本語対応

リンゴチャンプ

LingoChamp

An English-learning app from LAIX (Liulishuo) built around a proprietary speech-recognition and pronunciation-scoring AI. It scores the English you speak at the phoneme level and evaluates and corrects pronunciation, vocabulary, grammar and fluency across multiple dimensions. Widely used in China as "Liulishuo," but LAIX was delisted and taken private in the US in 2022, and the international version has shrunk to mainly English (+ Spanish) with stalled updates (availability from Japan and a Japanese UI need to be confirmed).

# AIチャットボット# 自己啓発・コーチング# 日本語対応

キキハ

kikiha

An AI meeting service whose bot joins Zoom, Google Meet and Microsoft Teams meetings to show live transcription and translated captions, then organizes AI minutes, decisions and to-dos after the meeting. Transcription in 60 languages and 15 translation targets. From ¥2,480/month (tax incl.), with a free demo of 1 hour total within 7 days of sign-up (no card required).

# 議事録作成# 会議翻訳・AI同時通訳# 音声合成・文字起こし# 要約・翻訳# 日本語対応

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Why Self-Directed Language Learning Sticks Better with AI

AI can build practice sessions around your favorite movies or hobbies, which makes it easier to stay motivated
AI can point out pronunciation or slightly unnatural phrasing on the spot, letting you rack up practice without feeling embarrassed
You can use it flexibly around life events, such as an intensive burst of study right before a trip

Points to Check When Choosing

How well it covers the language and purpose you're aiming for (travel conversation, exam prep, etc.)
How much you can practice within the free plan
The accuracy of its pronunciation evaluation and feedback
Whether the session length and frequency are designed to make it easy to keep going