AI音声文字起こし vs ROJIN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI音声文字起こし
This app quickly converts audio recordings into text using advanced AI. It offers a simple, intuitive interface for transcribing meetings, interviews, and personal notes. All data is securely stored on your device, ensuring privacy.
- Unlimited audio to text conversion
- High-accuracy AI speech recognition
- Simple and intuitive recording interface
- Easy data management by tab
- Secure on-device data storage
- Privacy protection
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無料のもじおこしです!総ダウンロード30万超の開発者が作った、『超シンプルなもじおこし』アプリです! 無制限音声を文字にすばやく変換できる、シンプルかつ直感的なアプリです。 【こんな方におすすめ】 ・会議や講義の内容をメモしたい方 ・インタビューや取材の内容をテキスト化したい方 ・日常のちょっとしたメモを音声で残したい方 【主な特徴】 ① シンプル操作 難しい操作は一切不要。録音ボタンを押すだけで音声がすぐに文字化されます。 ② 高精度な文字起こし 最新のAIの音声認識技術を使っており、精度が高く聞き取りやすい音声変換を実現しています。 ③ データ管理も簡単 録音したデータはタブ毎に管理できます。 ④ プライバシー保護 データは端末内で安全に保存・管理され、外部に漏れる心配はありません。 音声から文字への変換をシンプルに。 『超シンプルな文字起こし』をぜひお試しください。
ROJIN
This app provides real-time, offline speech-to-text and translation for multiple languages. It prioritizes privacy with fully on-device processing, making it ideal for use in various settings without an internet connection.
- Offline multilingual speech-to-text
- Real-time translation
- On-device processing
- No internet required
- Privacy-focused
- Low latency
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No purchase, no internet, no ads. Core Features Multilingual offline ASR: Japanese, Mandarin, Cantonese, English—real-time speech-to-text without internet. Real-time translation : Speak and translate instantly, ideal for travel, class, meetings. AI-enhanced translation (Apple Intelligence devices): Higher-quality local AI translation on supported models. Fully on-device processing: No internet access; speech and text are handled and stored locally. Privacy First No cloud upload; data stays on device. You can disable cellular/Wi-Fi access in system settings. Low Latency, Offline Ready Perfect for classrooms, commuting, travel, interviews—especially in unstable network conditions. Use Cases Lecture/class notes, meeting transcription, podcast/interview editing Travel communication, cross-language interaction, language learning Secure offline transcription in quiet/private settings Open the app, select a language. Tap to record, get instant text. System & Device Requirements ASR: iOS 16+ (latest version recommended) Real-time translation: iOS 18+ AI-enhanced translation: Requires Apple Intelligence support Features depend on device/system; speed and availability may vary. Language Support Recognition: Japanese / Mandarin / Cantonese / English Interface & documentation: continuously improving Privacy Notice This app does not access the internet or collect/upload any speech or text. All processing and data stay on your device (iOS system-level collection is unrelated to this app).
Screenshots
Verdict
The clearest difference is in-app purchases: ROJIN at none against AI音声文字起こし's 3. ROJIN also leads on ads (none vs shown) and review sentiment (100% vs 71%). On price, update cadence, device support and iOS requirement 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. AI音声文字起こし sells 3 in-app purchases, starting at $2.99 per month. ROJIN asks for nothing beyond the download.
AI音声文字起こし ships an update weekly, ROJIN every 5 days. Both last shipped on October 24, 2026.
| Parameter | AI音声文字起こし | ROJIN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 71.4% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.2 — better | 18.1 |
| Further details — not scored | ||
| Size | 63 MB | 557 MB |
| Age rating | 4+ | 4+ |
| Developer | Atsushi Koyama | Silicon Nexus |
Customer experience
AI音声文字起こし
ROJIN
In-app purchases
AI音声文字起こし
- プレミアムプラン$2.991 Month
- プレミアムプラン$29.991 Year
- 買い切りプラン$99.99
ROJIN
No in-app purchases








