Fidelia — Hi-Res Music Player
Bit-Perfect FLAC & CarPlay
Free · In‑App Purchases
Your FLAC and hi-res library on iPhone, iPad and CarPlay — bit-perfect to your DAC, or out to any UPnP streamer. With Lyrion and UPnP server libraries. No subscription.
Fidelia is the audiophile music player Mac listeners have trusted for over a decade — now on iPhone.
Bring your own collection — FLAC, ALAC, WAV, AIFF, DSD, MP3, and more — and hear it the way it was mastered. No subscription, no account, no one else's cloud.
YOUR LIBRARY, LEFT IN PLACE
Point Fidelia at a folder and play. Your files are referenced where they live — never copied, never re-tagged, never uploaded. Fast browse and search by song, artist, and album, built to stay quick in six-figure libraries. What's on the phone plays with no signal at all.
BUILT FOR YOUR DAC
Connect a USB DAC and Fidelia follows the music. Each track's own sample rate is requested from the device — verified on an RME ADI-2 by bit-pattern test, and visible on a Fosi DS2 switching 44.1 to 192. Bit-Perfect mode bypasses every processing stage for a unity-gain path from file to DAC, and the readout tells you exactly what your DAC is receiving. Where iOS grants a different rate than the file asks for, Fidelia's own reference resampler closes the gap — the same engine that runs on the Mac — rather than leaving it to the system. (Keep the system volume at maximum for a transparent path.)
YOUR SERVER, AND YOUR STREAMER
Fidelia speaks Lyrion (Logitech Media Server) and UPnP: your server's library sits in the app beside the files on your phone — one search, one player. Browsing your server is always free.
It plays TO your system, too. Any UPnP/DLNA renderer on the network becomes an output, chosen from the same picker as your USB DAC. Bit-perfect sends the original bytes, gapless. Leave it off and the whole chain runs first — HeadSpace, the resampler, your Audio Unit slots — then streams the result. Internet radio goes to the streamer too.
Keep Offline works on server tracks too: mark an album and it lives on the phone, playable with the server asleep or nowhere in range.
Network playback is a separate one-time unlock.
YOUR MAC'S LIBRARY, OVER WI-FI
Already run Fidelia on a Mac? Fidelia Bridge copies your albums, playlists, radio stations, presets and settings straight across your own network — nothing to find, nothing to import, nothing in a cloud. Keep chosen albums on the phone for listening without the Mac awake.
SOUND SHAPING, ONLY IF YOU WANT IT
• Audio Unit (AUv3) effect hosting — plug-ins open their own interfaces, and rotate with the phone
• Per-slot bypass and reordering
• ReplayGain track and album normalization
• HeadSpace, Fidelia's headphone crossfeed stage
• Precision volume with Dim and Mute, and levels that read in dB from the route itself
EVERYWHERE YOU LISTEN
• CarPlay, with four presets on the deck
• AirPlay, Bluetooth, and wired output
• Full lock-screen transport and background playback
• Gapless playback, shuffle, and repeat
• Playlists
• Internet radio
FAIR SOFTWARE
Download free and listen for 14 days, the whole player, no limits. If it earns a place on your phone, buy it once and it's yours. Network playback has a 14-day trial of its own, started whenever you're ready — so you can try it the day your streamer arrives, not the day you installed Fidelia. No subscription. No account. No ads.
There's a Mac app too — the same engine, the same processors, its own one-time purchase. Bridge connects the two over your own network.
FORMATS
FLAC, ALAC (Apple Lossless), WAV, AIFF, DSD (DSF/DFF), MP3, AAC, and more. DSD plays via high-quality PCM conversion.
From Audiofile Engineering — independent and family-owned.
Your server comes with you.
The Network module ships on: Lyrion and UPnP libraries sit in Fidelia beside the files on your phone — one search, one player. Browsing your server is always free.
Fidelia plays to your streamer.
Any UPnP renderer on your network becomes an output, chosen from the same picker as your DAC, and only one box plays. Bit-perfect sends the original bytes; leave it off and HeadSpace, the resampler and your Audio Units run first, then stream the result.
Your plug-ins, with their own faces.
AUv3 effects host their real interfaces now, and they rotate with the phone.
Also in this release: one output picker, primary on Now Playing. Levels that read in dB from the route itself. Delete from Library, which removes the reference and never the file.
The developer, Audiofile Engineering, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Audiofile Engineering, LLC
- Size
- 13.4 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Fidelia — Full License $29.99
- Fidelia — Network & Server $24.99
- Copyright
- © 2011-2026 Audiofile Engineering, LLC