Audio Merger: Join MP3 Songs

Audio Merger joins MP3 songs and other audio files into one track: pick your files, drag them into order, choose gapless, a pause or a crossfade between them, and merge audio right on your phone. MERGE AUDIO IN THREE STEPS • Pick two or more audio files at once, or add a whole folder • Drag the handle or use the up and down arrows to set the order; a number shows each track's place • Tap Merge, choose how the tracks join and the output format, and save one file JOIN SONGS THE WAY YOU WANT • Gapless: tracks follow each other with no pause, ideal for live albums and DJ sets • Crossfade of up to 12 seconds, with an equal-power or linear curve • Or leave a silent gap of up to 10 seconds between files • Match loudness: each file is measured and quiet and loud tracks are evened out before joining • Play together: layer every file from the same moment to mix songs into one sound • See the total length and the estimated file size before you start EDIT EACH TRACK BEFORE YOU MERGE • Trim the start and end with exact times such as 90, 1:30 or 1:30.5 • Set the volume of a single track from 10% to 200% • Fade in and fade out of up to 10 seconds per track • Sort 1, 2, 10 in natural order, reverse the list, or select and remove files • Your list and edits are saved, so you can continue where you left off FOR MUSIC, PODCASTS AND AUDIOBOOKS • Combine songs or MP3 files into one long track for the car, the gym or a party • Join recorded lessons, voice notes or podcast parts into a single episode • Merge audiobook parts and save a chapter list as .txt and .cue files • Use the sound of video files on your phone and join it with your music • Build a medley or a workout mix: combine tracks with smooth crossfades AFTER MERGING • Normalize the volume or remove silence at the start and end • Edit tags and cover art: title, artist, album and cover picture • Share the merged file to another app, or find it in Music/Audio Merger MORE AUDIO TOOLS • Cut: trim a song with a waveform and exact times • Mixer: layer tracks with their own volume, start time and loop • Split a file into equal parts, fixed-length parts or at silences • Volume boost up to 300% • Audio Lab: equalizer, bass boost, noise reduction, reverb, 8D sound, key and tempo • Studio: loop a sound, insert an intro, split by chapters, batch tag editor, batch rename and embedded lyrics FORMATS • In: MP3, M4A, AAC, WAV, FLAC, OGG, OPUS, AMR and other audio or video files your phone can decode • Out: MP3, M4A, WAV, FLAC, OPUS, OGG or AIFF, depending on the encoders on your phone • Up to 100 files in one list; your original files are never changed FREE PLAN, CREDITS AND PREMIUM • Merging up to 5 files with gapless joins or pauses is free • On the free plan, a crossfade or loudness matching uses 1 credit per merge, and each file past 5 uses 1 credit • Effects in the Audio Lab also use credits on the free plan • New installs get 5 welcome credits; a short ad adds 1 more, up to 5 a day; credit packs are sold in the app • Premium (monthly, yearly or lifetime) removes ads and all credit costs, so you can merge long lists with every option PRIVACY AND PERMISSIONS • Audio Merger processes your files on your device; nothing is uploaded • Internet is used only for ads, analytics, crash reports, Google Play purchases and ad-consent choices • Access to audio files is requested only when needed; video files open through the system picker QUICK ANSWERS • How many files can I join? Up to 100 in one list. The free plan merges 5 at no cost; more files use credits or Premium. • Which phones are supported? Android 8.0 and newer. Please merge only music and recordings you have the right to use.