Convexy — File Converter

MP3, WebP, PDF, HEIC — offline

Free · In-App Purchases

Convexy now encodes MP3 and WebP on your iPhone, two formats iOS cannot create on its own. Every conversion runs on the device. No uploads, no account, no subscription. Convexy converts files on your iPhone and iPad. Every conversion runs on the device, so your files never leave it. No cloud uploads, no account, no tracking, no subscription. WHAT IT CONVERTS Images: JPG, PNG, HEIC, TIFF, BMP, WebP, GIF, AVIF, ICO and camera RAW (DNG). Convert between them, turn them into PDFs, resize, and strip EXIF and GPS data before you share. Video: MOV, MP4 and M4V, in any direction. Make an animated GIF, pull the audio out as MP3, M4A, WAV or FLAC, or save a single frame as a still. Audio: MP3, M4A, WAV, AIFF, CAF and FLAC, any one to any other. Choose the sample rate and channels, and the bitrate for MP3 and M4A. Documents: PDF to and from images, and PDF to text. Convert freely between TXT, RTF, HTML and Markdown. CSV and JSON convert to each other and to plain text. Archives: create ZIP, TAR, GZ, BZ2, TAR.GZ, TAR.BZ2 and 7z. Open those plus RAR (v4 and v5), preview the contents, and extract. MP3 AND WEBP, ENCODED ON YOUR DEVICE iOS has no MP3 encoder and no WebP encoder of its own. Convexy bundles the open-source LAME and libwebp encoders and runs them locally, so you can produce both formats without a file leaving your iPhone. BATCH AND TOOLS Convert a whole album in one pass. Also PDF merge and split, a QR code generator, archive compress and extract, file checksums (MD5, SHA-1, SHA-256, SHA-512, CRC32), and opening encrypted files. Those tools stay free after the trial ends. PRIVATE BY DESIGN - 100% on-device. Files never leave your iPhone or iPad. - No account, no ads, no tracking, no analytics. - Works fully offline. - Built on Apple's own frameworks. WHAT CONVEXY WILL NOT DO - Convert a photo back into camera RAW. RAW is unprocessed sensor data, and developing it into an image discards that data permanently. - Convert a photo into true SVG. A photo contains no vectors. Convexy offers Trace to SVG, which redraws the image as vector shapes and labels it as the approximation it is. - Restore quality when converting a lossy file to a lossless one. - Create a RAR archive. No free RAR encoder exists, so no app can make one. Available in 14 languages.

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Convexy now converts to MP3 and WebP directly on your device. Also new: ICO export, FLAC output, 7z archive creation, Trace to SVG, and conversion between TXT, RTF, HTML and Markdown. Fixed: - The 50% and 25% resize options were shrinking images to 50 and 25 pixels. - Long documents converted to PDF were cut off after the first page. - Audio bitrate, sample rate and channel settings had no effect on M4A output. - Choosing HEVC with a lower resolution silently produced H.264, or the wrong size. - "Original" quality now remuxes video instead of re-encoding it, so a MOV to MP4 container change no longer costs a generation of quality.

Version 1.1.0

The developer, Pocket Atelier LLC, 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 based, for example, 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

    Size
    • 63.9 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    Languages
    English and 13 more
    • English, Arabic, Dutch, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
    Age Rating
    4+
    In-App Purchases
    Yes
    Provider
    Pocket Atelier LLC
    • Pocket Atelier LLC has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
    • DUNS Number
      145040426
    • Address
      5900 Balcones Dr
      Ste 100
      Austin Texas 78731-4298
      United States
    • Phone Number
      +1 3464605710
    • Email
      support@pocketatelier.llc
    Copyright
    • © 2026 Pocket Atelier LLC
  • Developer Website
  • 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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