英検4級バディ vs SpeakZilla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
英検4級バディ
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「えいけんバディ」は、小学生のための英検4級合格支援アプリです。 ◆ きみだけの学習プラン 問題を解くたびに、実力を自動で判定。簡単すぎず、難しすぎない「ちょうどいい問題」が出るから、効率よく 力がつきます。 ◆ 6,000問以上の問題 文法・語彙・リスニング・語句整序・長文読解まで、英検4級の全範囲をカバー。間違えた問題は自動で復習リ ストに入り、忘れかけたタイミングで再出題されます。 ◆ ストーリーで楽しく続けられる 勉強するとストーリー「メイプルの冒険」が読めるように。リスのメイプルと一緒に冒険しながら、英語の力を 伸ばそう!全169シーンのイラスト付き。 ◆ もぎテストで実力チェック 英検4級の本番と同じ形式のテストで、合格ラインに届いているか確認できます。 ◆ オフラインで使える インターネット接続なしで、いつでもどこでも学習できます。 【無料で使える範囲】 すべての学習機能・6,000問以上の問題・もぎテスト・ストーリー49シーンまで
SpeakZilla
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Say it out loud. Find out exactly what to fix. SpeakZilla listens while you read a sentence and scores every word separately, so instead of a single number you can do nothing with, you see which sounds landed and which need another go. HOW IT WORKS The sentence plays in your coach's voice, slowly enough to hear where one word ends and the next begins. You read it back. Every word comes back coloured — green for clear, orange for close, red for another try — and the words you skipped are named rather than quietly ignored. WHAT MAKES IT DIFFERENT • Scored on pronunciation alone. Not fluency, not speed. A score that congratulates everyone teaches nothing, so this one is deliberately strict. • A coach, not a robot. Alex is British, Sofia is American, and one of them records every sentence and every word in the app. Pick the one you would rather sound like; neither is more correct. • A tip written for the sentence in front of you. Not "practise the /æ/ sound", but which words in this sentence carry it and what to do with your jaw. • A Sound Map of forty English sounds, coloured by how well you say each one, with drills for the ones you find hard. • Lessons that come back. Sounds you keep missing return on a schedule, so practice lands where it is needed rather than where you left off. HOW IT IS PACED Three new lessons a day, and your first ten are uncapped while you settle in. Anything you have finished can be replayed as often as you like, and sound drills never count against the limit. Practising a little every day beats one long session a fortnight, and the app is built around that rather than around how long you can be kept in it. Streaks, daily missions and eggs mark the days you turn up. Eggs are earned by practising and buy extra lessons — they cannot be bought with money. FROM FIRST WORDS TO NEAR-NATIVE A short placement test finds your level, then 120 lessons run from single short vowels to the contractions and reductions that make speech sound spoken. Level checkpoints confirm you are ready before the next one opens. From Intermediate up, each level closes with a short passage read in one take — where the linking and rhythm that single sentences cannot teach finally get practised. WHAT IT COSTS Nothing. No adverts, no subscription, no purchases. WHAT WE DO WITH YOUR VOICE Speech is scored as you speak and is not kept as audio. You can delete your account, your progress and everything stored with it from inside the app, at any time, without asking anyone. Made by one person who wanted to be understood the first time.
Screenshots
Verdict
The clearest difference is update cadence: 英検4級バディ at daily against SpeakZilla's every 3 days. 英検4級バディ also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
英検4級バディ ships an update daily, SpeakZilla every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | 英検4級バディ | SpeakZilla |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 3 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 50 MB | 54 MB |
| Age rating | 9+ | 4+ |
| Developer | WEBLL SYSTEM LIMITED PARTNERSHIP | Andrew Kim |
In-app purchases
英検4級バディ
No in-app purchases
SpeakZilla
No in-app purchases





