JoinSound - Merge Audio Files
Join MP3s, recordings & songs
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Put recordings and songs back to back and save them as one file. Trim what you don't need. Your audio never leaves your device.
Join audio files into one, in the order you want.
Trim each one, then save as M4A, MP3 or WAV.
Simple, and your files never leave your iPhone.
JoinSound does one thing: it puts recordings and songs back to back and saves them as a single file. Pick audio files, or use the share sheet in another app and choose JoinSound. Drag to reorder, trim the start and end of each file or keep only the parts you need, then listen to the whole join and save.
WHAT YOU CAN DO
• Join audio files in the order you choose, and drag to reorder
• Trim each file on its waveform, or keep several parts of one file
• Play any file right in the list, and tap the waveform to jump
• Preview the whole join before saving, with marks where files meet
• Match loudness, so quiet and loud recordings sound even
• Shorten long silences in each file in one tap, after seeing where they are
• Save as M4A, MP3 or WAV, then share or save the file
• Matching files join to M4A without re-encoding, so quality stays the same
• Bring audio in from other apps with the share sheet
PRIVATE BY DESIGN
Everything happens on your device. Nothing is uploaded, there is no account and there are no ads.
FREE
Join 2 audio files with up to 2 parts each, match loudness and save as M4A, free.
JoinSound Plus (one-time purchase, yours forever)
• Join as many audio files as you like
• Unlimited parts per file
• Save as MP3 and WAV
• Shorten silences
• Share with your family (up to 6)
Works on iPhone and iPad.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Use ⏮⏭ on the trim screen to jump between parts and to the next file.
If you've made changes, we ask whether to save before moving on.
The Free vs Plus comparison is now easier to read.
The developer, mongdaewon, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- mongdaewon
- Size
- 7 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- JoinSound Plus $3.99
- Copyright
- © 2026 Mongdaewon
