Music Flex Player vs Sonarch
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Music Flex Player
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Music Flex is a music player for people who own their music, and want an EASY way to put it on their iPhone. Organize your music files as you like. Your files stay exactly where you put them, in the folders you chose, and they play whether or not you have a signal. Everything lives on your device. Files view shows your organized music in the app. Organizing by folders gives you the flexibility to create your music catalog in any way you want. Of course, there are the usual Artists, Albums and Playlists views as well. Getting music on is the easy part Open Wi-Fi Connect and Music Flex shows you a web address. Open it in a browser on any computer and drag your music straight in โ whole folders at a time. From that same web page, you can browse, rename, move, download, and even play your library through the browser over local network. Alternatively, you can add files through the Files app, or with a cable through Finder. Put music into the Music Flex folder and the app automatically recognizes the additions. A real player Play, shuffle and repeat, create unlimited playlists, lock-screen and headphone controls, and background playback are all here. Everything you'd expect from a music player โ geared toward the person who wants to control their own music library. Plays MP3, M4A, FLAC, AAC, WAV and AIFF. No tracking. No analytics. No account. Free to try with 25 songs. One optional in-app purchase unlocks your whole library โ buy once, no subscription.
Sonarch
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Sonarch plays the music you already own. Point it at folders on your Mac, a drive on your network, or a cloud account, and it builds one library out of all of them. Nothing is streamed from us, nothing is counted, and nothing about what you play leaves your device unless you ask it to. MIXES, ENDLESS AND YOUR OWN Your Mac or iPhone listens to 30 seconds of every track and works out what sounds alike, with no service involved. Play a ready mix named after its artists, or start one from any track, and it goes on for as long as you listen. Drift wanders as near or as far as you like, or winds down to your calmest music; Similar holds one mood. When an album ends, Autoplay carries on with music like it. A sound map lays out your artists by how they sound; start a mix from any of them. Narrow a mix to the artists or genres you choose, save it, and come back where you left off. With Sync, what one device analyzes, the others use too. ONE TRACK, HOWEVER MANY COPIES A track you have as FLAC and again as MP3, sitting in two different places, is one row in your library โ with every format and every place it lives behind it. EVERY FORMAT, GAPLESS BETWEEN THEM FLAC, ALAC, WAV, AIFF, MP3, AAC and Ogg Vorbis, with ReplayGain so a library built from many sources plays at one loudness. An album ripped as one file with a CUE sheet shows up as its own tracks. The output can follow each track's sample rate, and crossfade and silence trimming are there when you want them. SOUND THAT FITS YOUR HEADPHONES Import the AutoEQ profile for your headphones and everything you play is corrected, with its own profile for each output. Hi-fi style bass and treble controls are kept per output too, and a peak limiter lets both play louder without clipping. BROWSE VIEWS THAT FOLLOW THEIR RULES Any view can be restricted to the locations you choose, and a browse view takes rules as well, composed in its own filter engine. WHERE YOU LEFT OFF A browse, a playlist, every album and every saved mix each keep their own place, and quitting loses none of them. Bookmarks save any moment inside a track, to come back to later. WHAT YOU PLAYED, AND WHEN History keeps every play with the time it happened, counts a track that came around twice, and remembers the view each one was played from โ so it can be played again, or opened where it came from. Search all of it by track, album or artist. Bring in your Last.fm history, and Stats reaches back to years before Sonarch. FOLDERS, NETWORK SHARES AND CLOUDS Bandcamp, Dropbox, OneDrive, pCloud, S3 buckets, a WebDAV share or a Subsonic server, connected straight from your device with your own credentials. Your files never pass through our servers. Take what you want offline for the train. ACROSS YOUR DEVICES Sign in, and your likes, play history, tag corrections and playlists follow you between your devices. Pause on one and carry on from the same second on another. TAGS THAT STAY FIXED Correct a tag once and it survives every rescan โ written into the file where that is possible, kept by the library where it is not. ON THE MAC Send audio to another output with a keystroke, mid-track, without a trip into Settings. Schedule a start time and decide what happens when it ends. Drag in a ZIP from Bandcamp and it joins the library, with the shop's own tags stripped on the way past. ON IPHONE CarPlay, the Lock Screen and Control Center, through the system player. Control the Mac from your phone over the local network. ALSO An editable playing queue. Lyrics from your tags or from LRCLIB. Scrobbling to Last.fm and ListenBrainz. Stop after this track, album or artist, or pause after a set time. Genre categories worked out from your tags. Playlists, statistics, and sharing tracks as files. NO TELEMETRY, NO ACCOUNT NEEDED No analytics, no crash reporting, no advertising identifier and no third-party SDK of any kind. An account is optional โ the player works perfectly without one.
Screenshots
Verdict
The clearest difference is in-app purchases: Sonarch at none against Music Flex Player's 1. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Music Flex Player sells 1 one-off in-app purchase. Sonarch asks for nothing beyond the download.
| Parameter | Music Flex Player | Sonarch |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 3 days |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone | iPhone, Mac โ better |
| Requires iOS | 18.0 | 18.0 |
| Further details โ not scored | ||
| Size | 5 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Tom KRUK | Aliaksandr Siamionau |
In-app purchases
Music Flex Player
- Unlimited Library$8.99
Sonarch
No in-app purchases









