Speaker Booster - Ampcrank

Volume, Bass & Voice EQ

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Volume maxed out and still hard to hear? Ampcrank is an audio-boosting player: import your music, podcasts, recordings, and voice messages, then make them louder and clearer with real volume gain and a full equalizer. VOLUME BOOST - 0 to +24 dB digital gain — turn the knob and hear the difference instantly - Built-in limiter keeps audio clean and distortion-free even at maximum boost - Live level meter and spectrum animation show the boost at work EQUALIZER - Vocal Booster: brings muffled, unclear speech into focus - Bass Boost: deeper, punchier low end - Podcast / Voice Memo: tuned for recordings and voice messages - 10-band manual EQ (31 Hz–16 kHz) with savable custom presets A COMPLETE LOCAL PLAYER - Import MP3, WAV, M4A, FLAC, and AAC from the Files app or iCloud Drive - Extract the audio track from MP4 videos - Receive audio files shared from other apps via the system share sheet - Background playback with Lock Screen and Control Center controls CLEAN AND SIMPLE - No account required; your audio files stay on your device and are never uploaded HOW IT WORKS Ampcrank enhances audio through digital signal processing (gain + EQ + limiting) applied to files played inside the app. It does not raise your iPhone speaker's hardware volume limit, and it does not amplify other apps, ringtones, or phone calls. AMPCRANK PRO - Boost audio all the way to +24 dB - Use the full 10-band equalizer - Unlock every preset, custom presets, and loop mode - Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in App Store settings. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

Bug fixes and improvements.

Version 1.0.1

The developer, 明航 李, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • 明航 李
    Size
    • 14.4 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 32 more
    • English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
    Age Rating
    4+
    In-App Purchases
    Yes
    • Unlimited access $24.99
    • Unlimited access $4.99
    • Learn More
    Copyright
    • © 2025 ButterFly
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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