WhisperDirect vs Whisper文字起こし

WhisperDirect is an audio transcription and summarization app built around the high accuracy of the Whisper API. In addition to the Whisper API using your own API key, it includes on-device features such as Apple Speech, Speaker Diarization (NVIDIA Nemotron 3), and OCR. For summaries and meeting minutes, choose from OpenAI / Gemini / OpenAI-compatible LLMs, using APIs only as much as you need. One-time purchase — no subscription. Pricing & Experience ・7-day free trial included ・On-device features (Apple Speech / Speaker Diarization / OCR) are free, no API key required ・Whisper API and LLM (Summary / Minutes) are billed by each provider on a usage basis 　(The app does not charge for API usage) Cost Estimates ・Whisper API: ~$0.006/min (1 hour ≈ $0.36) ・Segment re-transcription (gpt-transcribe): ~$0.0045/min ・On-device features incur no API fees ・Actual costs vary with audio length and settings ・OpenAI API pricing: https://openai.com/api/pricing ・Gemini / custom providers follow each service's pricing ・Locally-run custom providers (e.g. Ollama) incur no API fees Transcription Engines ・Whisper API (OpenAI): high accuracy with your own API key ・Apple Speech (On-device): no API key, iOS 26+ ・Switchable from settings Models for Summary & Minutes ・Choose from OpenAI / Gemini / Custom 　- OpenAI: GPT-6 Luna / GPT-5 nano / GPT-5 mini / GPT-4.1 nano / GPT-4.1 mini 　- Gemini: requires Google AI Studio API key (gemini-*-pro / flash / gemma) 　- Custom: OpenAI-compatible APIs (Ollama / LM Studio / self-hosted) ・Processing costs only a few cents even for several-thousand-character text Key Features ・Record with the mic button and transcribe on the spot ・Live Preview: real-time transcription while recording (on-device) ・Recording display mode switch (Waveform / Simple) ・Import audio files → transcribe (Share Sheet) ・Video import (audio extracted and compressed) ・Transcript auto-highlights with playback position ・Insert timeline markers at any interval (5-sec steps) ・Generate summaries from transcripts ・OCR from images (batch supported, no API fees) ・Generate meeting minutes (prompts editable) ・Re-transcribe misrecognized segments in the editor 　(Uses OpenAI gpt-transcribe; billed by usage) ・Re-transcribe specific items with Whisper API, even while using Apple Speech ・Speaker diarization (NVIDIA Nemotron 3, on-device) ・Export: Audio / Text / Summary / Minutes / VTT / SRT ・Auto-post to Slack ・Webhook integration (Discord, Slack, n8n, etc.) ・Google Drive auto-backup ・Estimated cost display ・Fine-grained settings (LLM model, timeline interval, prompts) Supported Formats Audio: mp3, m4a, aac, wav, flac, ogg, opus, wma, amr, mpga, webm, aiff, caf Video: mp4, mov, m4v, webm, mkv, avi, mpeg, mpg Notes ・Whisper API requires an OpenAI API key ・On-device features work without an API key ・Prices, specs, and models may change per provider

Whisper文字起こしは、OpenAI Whisper（whisper.cpp）を iPhone 上で動かす音声文字起こしアプリです。 【主な機能】 ・マイク録音の文字起こし ・音声・動画ファイルのインポート（m4a / wav / mp3 / mp4 / mov など） ・多言語（日本語、英語、中国語ほか設定画面の言語一覧） ・履歴の保存・検索・お気に入り ・txt / json / csv / srt へのエクスポート、共有 【オフラインについて】 初回起動時に Whisper モデルを Hugging Face からダウンロードします（Base 既定で約142MB）。ダウンロード完了後、文字起こし処理は端末内のみで完結し、音声・文字起こし結果を開発者サーバーへ送信しません。 【必要環境】 ・iOS 17.0 以降の実機（Simulator 非対応） ・マイク利用時は許可が必要です 広告・トラッキング・アプリ内課金はありません。 【免責】文字起こし結果は AI による参考情報であり、正確性は保証されません。重要な用途では必ず内容をご確認ください。 https://porarrirr.github.io/offline-whisper-transcriber-ios/disclaimer.html