PDF2Audio vs Castique

Turn any PDF into audio you'll actually listen to. PDF2Audio uses AI to transform research papers, articles, ebooks, and reports into engaging podcasts, focused lectures, or quick summaries — read aloud by studio-quality voices in your preferred language. WHY PDF2AUDIO • Listen, don't read. Convert dense PDFs into audio you can play on a commute, run, or while doing chores. • Pick your style. Two-host podcast dialogue, single-speaker lecture, concise summary, deep research analysis, faithful read-through, and more. • 13 AI voices. Mix and match — Alloy, Nova, Onyx, Coral, Sage, Shimmer, and more. Preview each voice before you choose. • 18 languages. Generate audio in English, Spanish, French, German, Japanese, Korean, Chinese, Arabic, Hindi, Italian, Portuguese, Russian, Thai, Vietnamese, Indonesian, Turkish, and more. • Background-friendly. Lock-screen controls, CarPlay, AirPods support, automatic resume. • On-device OCR. Scanned PDFs work too — Vision OCR runs locally for privacy. • Notifications. Convert a PDF, leave the app, get a push when your audio is ready. • Library + Playlists. Save conversions, build playlists, sync across devices. • Sign in with Apple or Google. No password to remember. PRO FEATURES • Custom voice cloning (Pro tier) • Higher monthly character allowance • Priority processing Subscriptions auto-renew until cancelled in iOS Settings. PRIVACY We respect your data. PDFs are processed to generate your audio and aren't shared. No ads, no tracking. privacy policy: https://www.pdf2audio.ai/privacy terms of use: https://www.pdf2audio.ai/terms Have a question? Reach us at support@pdf2audio.ai

Castique turns the articles, notes, and ideas you mean to read into an AI podcast you can actually listen to - a natural back-and-forth between two hosts, Joe and Jane. Paste a link, import a PDF, paste text, or type a topic. Choose a language, format, and length, and Castique writes a tight script and voices it. Your episode is then ready for the drive, the train, or the dishes. FEATURES - Link, text, topic, or PDF in - a finished audio episode out - Two-host conversation, not a flat read-aloud - 30 podcast languages, including English, Turkish, Spanish, German, French, Portuguese, Arabic, Japanese, Korean, Hindi, Italian, Chinese, and more - Formats: Conversation, Debate, Interview, or Explainer - Lengths: Standard or Extended (about 15 minutes) - Background playback with Lock Screen and Now Playing controls - Highlights and full transcript for every episode - Private, on-device history for generated episodes - Save audio to Files, iCloud Drive, or another destination you choose - Share a link straight from Safari into Castique (iOS) - Native on iPhone and iPad No account required. Just paste and press play. Castique generates audio using AI from the content you provide. Audio quality and accuracy depend on the source article. Podcast generation uses credits. Credit packs are available as separate one-time in-app purchases. There is no subscription or automatic renewal, and unused credits do not expire.