Tagwell
Tagwell
Fix wrong titles, artists, and albums on your music files — Tagwell writes edits to a copy and verifies every save actually stuck.
Coming soon to theApp Store
Tagwell is a music tag editor for iPhone. Import MP3 or M4A files from the Files app, rewrite the title, artist, album, year, genre, or track number, and save. It is built for people who curate an offline music library — ripped CDs, store downloads, files copied from a computer — and need the metadata fixed without a desktop.
The difference is trust. Tagwell never silently rewrites your original file: edits are staged as a pending diff, written to a copy, and the original is replaced only after you confirm. After every save the app re-opens the written file and shows a per-field check that the bytes really changed.
Everything happens on the device. MP3 tags are written as real ID3v2.3 frames and M4A files get proper iTunes-style atoms, with the audio copied byte-for-byte — never transcoded. FLAC, WAV, AIFF, and AAC open read-only and are clearly flagged, never silently broken.
Title, artist, album, album artist, track and disc number, year, genre, composer, and comment — laid out as clean rows you can rewrite in seconds.
Edits are written to a copy first. You replace the original only after an explicit confirm, so a bad save can never corrupt your library.
Tagwell re-reads the written file and shows a per-field check that the new tags actually landed — no more edits that quietly vanish.
Select a whole album and apply one field value — album name, artist, year — across every track in a single pass.
MP3 and M4A are fully writable. FLAC, WAV, AIFF, and AAC open read-only and say so up front instead of failing silently.
Existing cover art, comments, and other metadata are carried over to the saved copy untouched when you edit a title or artist.
Pick a folder or multi-select tracks from the Files app. Nothing is uploaded; the files never leave your device.
Edit any field on one track, or batch-apply a value across a selection. Changes stage as a visible pending diff.
Tagwell writes your edits to a copy of the file, with the audio copied byte-for-byte and existing artwork preserved.
The app re-reads the saved file and checks every field, then you decide whether to replace the original.
Use a tag editor that can open files from the Files app. In Tagwell you pick the tracks or a folder, edit fields like title, artist, and album in a simple form, and save — the app writes proper ID3v2.3 frames into the MP3 without touching the audio.
Some editors report success without actually writing valid frames to the file, so the old tags reappear when another player reads it. Tagwell answers this directly: after every save it re-opens the written file and shows a per-field check confirming the bytes really changed.
It can if an editor rewrites the file carelessly or transcodes the audio. Tagwell avoids this by design: the audio is copied byte-for-byte, edits go to a copy of the file, and your original is replaced only after you explicitly confirm — so there is no way for a save to silently destroy a track.
ID3 is the metadata block inside an MP3 file that stores the title, artist, album, year, genre, artwork, and more. Music players read it to display track info, which is why a wrong or empty ID3 tag shows up as 'Unknown Artist'. Tagwell writes the widely compatible ID3v2.3 version of the format.
The file's metadata is missing or wrong, so you need to rewrite the artist tag. Open the track in Tagwell, type the correct artist and any other fields worth fixing, and save — players will pick up the corrected name from the file itself.
Yes. Tagwell does the whole job on the iPhone: import from the Files app, edit, save, verify. There is no desktop companion, no upload to a server, and no account.
Yes. Select the tracks — a whole album or any set — and batch-apply a single field value such as album, artist, or year in one pass. It is the fastest way to unify an album that imported as twelve different spellings.
Those formats open read-only: you can inspect their tags but not write them in the current version. Tagwell flags this clearly instead of pretending to save, so a read-only format is never silently broken. MP3 and M4A are fully writable.
No. Tags live in a separate metadata section of the file, and Tagwell copies the audio stream byte-for-byte without re-encoding. The music data in the saved copy is bit-identical to the original.
It is preserved. Existing cover art, comments, composer credits, and other metadata are carried over to the saved copy untouched, so fixing one field never costs you another.
No. Tagwell reads and writes files locally through the Files app with no server involved. Your library stays on your device from import to save.
Yes. M4A and ALAC files store metadata as iTunes-style MP4 atoms, and Tagwell writes those natively. The same fields are available as for MP3, and the same copy-then-confirm safety applies.
Yes. Tagwell stages every edit as a pending diff, so you can see exactly which fields will change before anything is written. Saving produces a copy, the app verifies each field landed, and only then do you choose to replace the original.
Fix every tag in your library — and know the save actually stuck.
Coming soon to theApp Store