QAudioEditor vs jd.Edit

QAudioEditor is a lossless audio editor for iPhone and iPad. Open an MP3, AAC (.aac), M4A (.m4a), Apple Lossless, FLAC, or WAV file - or a video (MP4, MOV, M4V) to edit just its audio - see its waveform, and cut, crop, fade, normalize, copy/paste, or append audio - then save without re-encoding. Untouched audio is preserved byte-for-byte; only faded or normalized regions are adjusted, and always losslessly - MP3 and AAC by rewriting the codec's gain fields (the mp3gain/aacgain technique), and WAV, ALAC and FLAC in the sample domain - so there is no generation loss. SUPPORTED FORMATS - MP3 (MPEG-1/2 Layer III, constant or variable bitrate) - AAC - AAC-LC, HE-AAC and HE-AAC v2 - in ADTS (.aac) - AAC in MP4 (.m4a) - Apple Lossless / ALAC in M4A (.m4a) - FLAC (.flac), 16- and 24-bit - WAV / PCM (.wav), 8- to 32-bit and 32-bit float - Video (.mp4, .mov, .m4v) - the audio track is extracted losslessly for editing FEATURES - Frame-accurate cut, crop, and trim - Split markers - drop markers anywhere, drag them to fine-tune, and split a long recording into numbered files in one step - Export Selection - save just the selected part as a new file - Lossless fades and one-tap normalize - Pull the audio out of a video (MP4, MOV, M4V) - open it, or insert it at the playhead; AAC and ALAC tracks are extracted with no re-encoding - Cut, copy, paste, and insert or append other files of the same format (.aac and .m4a interchange freely) - Hardware-keyboard shortcuts on iPad - Playback follows the view - scroll to another part while playing and it plays from there - Rich waveform with peak + RMS view, zoom that stays centered on the playhead, and an overview navigator - Spectrogram view - see the frequency content over time on a log scale; toggle it with the waveform (cached for instant reopen) - File details, unlimited undo, and crash-safe session restore - Edit tags - title, artist, album and cover artwork - saved losslessly (MP3 and M4A/AAC) - Export raw AAC as a seekable .m4a - Universal purchase - buy once, use on iPhone, iPad and Mac Free to edit and to save results up to 5 minutes long. QAudioEditor Pro (a one-time purchase) removes the length limit so you can save recordings of any length - and one purchase unlocks Pro on iPhone, iPad and Mac.

jd.Edit is a waveform editor for iPhone — cut audio like on a desktop. On top of that, the app records through USB audio interfaces in true stereo and remembers your input choice instead of letting iOS silently switch back to a Bluetooth headset. And it writes MP3 with its own encoder — something iOS cannot do at all — calibrated against the reference encoder LAME. FREE — INCLUDED FOR EVERYONE • Opens WAV, AIFF, CAF, MP3, M4A/AAC, Apple Lossless, FLAC and Opus (mono and stereo) • Waveform with two-finger zoom all the way down to individual wave cycles • Select, listen, delete, trim to selection, silence — non-destructive, with unlimited undo; the original file is never touched • Linear fade-in and fade-out • Zero-crossing snap and a 2 ms micro-fade at every cut edge: no clicks • Recording with the built-in microphone as uncompressed WAV (44.1 kHz / 24-bit) • File shelf with folders, search, preview playback and mini player — visible in the iOS Files app • Export as WAV and AAC. At the same bitrate, AAC actually beats MP3 in quality — the free tier does not get the worse result, just not the older format The free tier is deliberately complete: if you trim a voice memo or cut a ringtone, you will never hit a wall. THE PRO UNLOCK — ONE-TIME PURCHASE, NO SUBSCRIPTION • MP3 export with the built-in encoder jd.Codec: constant bitrate, variable (V0–V9) or average bitrate, joint stereo, sample-accurate gapless • Freely shapeable fade curves with seven presets — drag, add and remove points, with dB and time readout • Normalize to peak level or loudness (RMS) with a selectable target and clipping protection • Recording through USB audio interfaces and in stereo — with a real-time spectrum analyzer and level meters • Wi-Fi transfer: upload and download files in a browser on your computer, with QR code and access code; hotspot mode gets around hotel and guest networks • Export in 24-bit and 32-bit float, with dither • Edit ID tags on MP3s: title, artist, album, cover and more — in the app and in the browser on your computer via Wi-Fi transfer And nobody buys blind: every Pro feature can be used five times for free — only then does the app ask for the purchase. ABOUT JD.CODEC iOS ships without an MP3 encoder — jd.Edit brings its own. jd.Codec is developed entirely in-house with zero third-party libraries, verified with 116 round-trip checks against Apple's own decoder and benchmarked against LAME. And lossless is always available: import → export without edits is bit-identical for WAV.