PhaseShift vs Flex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhaseShift
A private, high-fidelity music player for your owned music collection. Import and organize your audio files, enjoy detailed playback features, and customize your listening experience without ads or tracking.
- Import music from various sources
- Organize and customize library
- High-fidelity audio playback
- Customizable playback controls
- Create and edit playlists
- Sync library across devices
- Offline functionality
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PhaseShift is a private, high-fidelity music player built for the music you own. Import your collection, organize it your way, and enjoy detailed playback without accounts, ads, tracking, or reliance on streaming services. PLAY YOUR COLLECTION Import music from Files, iCloud Drive, USB storage, your computer over Wi-Fi, or folders on WebDAV and SMB network shares. Use folders in place or copy tracks into PhaseShift. Browse songs, albums, artists, genres, playlists, recently added music, and pinned favorites. Customize your library shelves and artwork sizes to suit your collection. HIGH-FIDELITY AUDIO Play MP3, AAC, M4A, ALAC, FLAC, WAV, AIFF, DSF, and DFF files. See the active signal path, sample rate, bit depth, and output route while listening. Native DSD decoding and optional DSD over PCM support help you get more from compatible audio hardware. MAKE PLAYBACK YOURS Build and edit the queue, enjoy gapless playback, view synced or plain lyrics, set a sleep timer, and use A-B repeat or track bookmarks. Choose from customizable themes and visualizers, scrub with a real waveform, and fine-tune sound with a 10-band equalizer, ReplayGain, crossfade, headphone crossfeed, and correction profiles. ORGANIZE AND EDIT Create regular and smart playlists, sort and filter your library, edit tags and artwork, apply batch changes, and import CUE sheets as individual tracks. PhaseShift can write supported ratings and play counts back to your audio files, helping your collection remain portable. YOUR LIBRARY ACROSS YOUR DEVICES Pair your own devices with a QR code or pairing code, then sync music, playlists, artwork, ratings, play history, and tag changes over your local network. Sync your whole library or selected artists and playlists, and choose the audio quality stored on each sub device while keeping the primary library in control. Back up and restore library data whenever you choose. MORE WAYS TO LISTEN Control playback from Apple Watch, use Now Playing and Recently Added widgets, follow playback with a Live Activity, and start common actions with Siri and Shortcuts. On Mac, choose an audio output device directly in PhaseShift. PRIVATE BY DESIGN PhaseShift is designed to work offline. Your listening history and library stay under your control, and local transfer and device sync do not require an internet account. PhaseShift includes a capable free experience. PhaseShift Pro is available as a one-time in-app purchase and unlocks advanced features including the equalizer, ReplayGain, crossfade, waveform overview, A-B repeat, bookmarks, listening statistics, premium themes and visualizers, Apple Watch control, CUE import, batch find and replace, backups, and multi-device sync.
Flex
This app is a music player and playlist manager for personal Plex Media Server libraries. It allows offline playback, advanced playlist editing, and offers features like scrolling lyrics, visualizers, and CarPlay support. Personalize your music experience with customizable interfaces and hands-free Siri integration.
- Plex Media Server integration
- Offline music playback
- Advanced playlist editing
- Scrolling lyrics with sync
- Visualizer styles
- CarPlay support
- Customizable interface
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Your music library should feel like yours. Flex Music is an independent music player and playlist manager for personal Plex Media Server libraries. Sign in with Plex, pick your server, and your music is there — at home, in the car, on your wrist, and offline. No Plex Pass required. BUILT AND TESTED FOR BIG PLAYLISTS Forget the endless scrolling. A song pops into your head, you type a few letters, and there it is — search works inside a playlist, not just across your library. Then reorder by drag, or swipe a track straight to the top, the middle, a random spot, or the bottom, and map each of the four swipe slots to whichever action you use most. Add whole albums. Add what's playing. Clone a playlist and tidy up the copy. All of it tested on playlists of more than 17,000 tracks. A PLAYER WORTH LOOKING AT - Lyrics that scroll with the song, full screen, in four sizes. If they drift, tap the line you're actually hearing and they snap back into sync. The screen stays on while they're up. Pulled from your server, with an automatic LRCLIB fallback when it has none - Six visualizer styles that move to the track's own decoded audio once it has been analysed, and ambient motion until then - An optional waveform progress bar drawn from the song's own loudness - Colors pulled from the album art, and seven themes including true black - Star ratings saved straight back to Plex OFFLINE, PROPERLY Download a playlist and it keeps playing on your iPhone when the server is unreachable. Set a storage cap and Flex clears out whatever you play least, or turn on Keep favourites offline and it downloads your most-played tracks for you — over Wi-Fi only, if you prefer. IN THE CAR CarPlay is included, free. Browse your playlists, albums and recent listening on the head unit, with artwork, and rate the playing track without touching your phone. ON YOUR WRIST The Apple Watch app is part of Flex Music Pro. Start a playlist, see what's playing with its artwork, rate a track, browse what's coming up next, and use the Digital Crown as the volume. The iPhone does the playing; the watch is the remote. HANDS FREE Ask Siri to play a playlist by name and Flex Music starts it. MADE FOR YOUR SCREEN iPhone and iPad, with a side-by-side queue and lyrics on larger displays. Background playback with the iOS lock screen and Control Centre. YOURS, AND ONLY YOURS Rearrange or hide almost anything — the six home rails, the navigation bar, track numbers, the swipe actions, the lyric size. No ads. Your credentials are stored locally and are never sent to our servers, and Flex Music has no account and no advertising profile of its own. FLEX MUSIC PRO Free, always: browsing, playback, search, ratings, lyrics, every theme and visualizer, editing playlists of up to 100 tracks, and downloading up to 100 tracks at a time. Flex Music Pro unlocks editing playlists over 100 tracks, downloading more than 100 tracks in one go — including choosing an exact number — keeping more than 100 favourites offline, and the Apple Watch app. Buy it once, or take a monthly or yearly pass; all three give the same access. Purchases are processed by the App Store and can be restored from Settings. REQUIREMENTS - A Plex account - Access to a Plex Media Server containing a music library - Network access to that server for streaming and library management Flex Music is an independent app developed by Elixir Consultancy Services Ltd. Flex Music is not affiliated with, endorsed by, or sponsored by Plex, Inc. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Flex at 15.0 against PhaseShift's 17.0. On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PhaseShift sells 1 one-off in-app purchase and Flex sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for PhaseShift against 5.0 for Flex. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | PhaseShift | Flex |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Mac, Apple Watch | iPhone, iPad, iPod, Apple Watch |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Nevv Atlantis LLC | Elixir CS |
In-app purchases
PhaseShift
- PhaseShift Pro$4.99
Flex
- Flex Music Pro Monthly$1.991 Month
- Flex Music Pro Yearly$19.991 Year
- Flex Music Pro Lifetime$49.99









