Comparison

SubStreamer vs Dromio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SubStreamer

Access and stream your personal music library from a Subsonic-compatible server on your mobile device. Enjoy offline playback, personalized mixes, and detailed listening analytics without ads or subscriptions.

Highlights
  • Stream and download music library
  • Offline listening with background processing
  • Personalized smart mixes
  • Listening analytics and scrobbling
  • Playlist and library management
  • Background playback with lock screen controls
  • Open source
Features
Read full description

Your music. Your server. Everywhere you go. Substreamer turns your Subsonic-compatible server into a personal streaming service. Browse, play, and download your entire music library on iPhone and iPad — free, with no ads, no subscriptions, and no data collection. Verified with Navidrome, Subsonic, Gonic, Nextcloud Music, and Ampache. Also compatible with Airsonic-Advanced, Funkwhale, Supysonic, and other Subsonic API servers. STREAM & DOWNLOAD Stream in full quality or choose a bitrate that suits your connection. Download albums and playlists for offline listening with background queue processing and automatic recovery. Substreamer switches to offline mode automatically when your server is unreachable. TUNED IN — SMART MIXES Personalised playlists powered by your listening history. Time-of-day mixes, deep cuts from similar artists, decade time machines, genre blends, favorites radio, and a custom mix builder — all generated from your own library, not an algorithm trained on someone else's taste. LISTENING ANALYTICS See your play history, top artists, albums, and songs, most active listening hours, activity heatmaps, and listening streaks. Scrobbles queue locally when you're offline and sync automatically when you reconnect. Exclude specific albums or artists so one-off plays don't skew your stats. LIBRARY MANAGEMENT Browse by album, artist, or playlist. List and grid views with alphabetical quick-scroll for large libraries. 5-star ratings and favorites sync with your server. Create and manage playlists, reorder tracks, or save your current queue as a new playlist. PLAYBACK Background playback with full lock screen and notification controls. Adjustable playback speed, shuffle, and repeat. Share albums or playlists with configurable links. BEAUTIFUL & PRIVATE Light, dark, and system themes with custom accent colors. Album art color extraction for immersive detail views. No tracking, no analytics, no account required — your music stays between you and your server. OPEN SOURCE Substreamer is open source under the GPL-3.0 license. Browse the code, report issues, or contribute at github.com/ghenry22/substreamer.

About

Dromio

Read full description

Dromio is a free open-source Navidrome client for iPhone. It does not support any other type of Subsonic server — it is Navidrome-only. Small and simple, typically occupying just 2MB of your iPhone’s storage, Dromio adopts a minimalist attitude. Its goal is to let you survey, select, and play your music — and that’s all. It is oriented particularly towards Classical music collections, fully displaying long track titles and artist information, and supporting tagging for Composer and Year. Unlike some Subsonic clients, sequential playback of multiple tracks is gapless. Requirements: Dromio requires iOS 18 and a Navidrome server running the “BFR” (0.55.0) or later. You will need to have Subsonic.ArtistParticipations set to true in your configuration; otherwise, Dromio’s artist and composer support will not work. Interface ======= Dromio displays the following information: * Albums and their tracks. * Random albums and their tracks. * Artists and their albums (and those albums’ tracks). * Composers and their albums (and those albums’ tracks). * The current queue (tracks to be played, or currently playing). * Albums, artists, and composers are properly alphabetized, and searchable. Album tracks are searchable. No information is fetched from the server unless you ask for it by navigating to that screen. Full Display ======== Titles and artists can be lengthy, especially for Classical music. Unlike many Subsonic clients, Dromio does _not_ truncate this information. Dromio provides a full display of the information that it fetches — album title and artist; track title, artist, composer, year, and duration. Minimalism ========= Dromio doesn't waste of your time, your space, or your attention: * There is no account administration (e.g. creation of users), because you can do that with Navidrome’s web interface. * There is no creation and storage of named playlists. * Secondary features like favorites, play counts, genres and so forth are unsupported. * No artwork is fetched or displayed. * No “database” is stored on disk! Dromio works by talking to the Navidrome server, not by creating a database and consulting that database. Navidrome is the database. You never need to “update” Dromio’s copy of the database; there is no such copy. Unlike some Subsonic clients, Dromio lets you store credentials for multiple accounts on multiple servers. There is no difficulty or delay switching servers, because no track information has been stored. How to Use ========= Launch the app. The first time, you will be asked to enter your Navidrome server information. You are then taken to the list of Albums. The “page-turn” button at the top left lets you switch between All Albums, Random Albums, Artists, and Composers. You can also use it to return to the app’s initial screen to manage the app’s list of Navidrome servers. Tapping an album takes you to the list of its tracks. Tap a track to add it to the Queue. Nothing will appear to happen. But now, on any screen, tap the “list” button at the top right, to see the Queue. The tracks that you have tapped are here! Now you can tap a track to start listening. About the Queue Screen ================== On the Queue screen, tap a track to begin listening to the Queue, starting with the track you tapped. Download progress is displayed; a downloaded track is fully marked in yellow. Once Dromio has started playing, the currently playing track is marked with a “note” icon in the Queue, and the “playpause” button is enabled, allowing you to pause and resume play. The “scissors” button at the top left makes the queue editable. You can delete a track from the queue, and you can rearrange the order or tracks. While you are editing, the “scissors” changes to a “checkmark”; tap the “checkmark” when you are done editing. The “x” button at the top right clears the queue and erases the downloads. Issues? Suggestions? ================ https://github.com/mattneub/dromio

Screenshots

SubStreamer4 screens
Dromio4 screens

Verdict

The call

The clearest difference is update cadence: SubStreamer at every 2 weeks against Dromio's every 2 months. SubStreamer also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SubStreamer ships an update every 2 weeks, Dromio every 2 months. The most recent releases landed on October 10, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
SubStreamer versus Dromio: the parameters behind the verdict, then further details
ParameterSubStreamerDromio
PriceFreeFree
Rating4.0 (141 ratings) — better—
Positive reviews72.2% of reviews—
Number of ratings141 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better26.0
Further details — not scored
Size55 MB3 MB
Age rating+44+
DeveloperGaven HenryMatt Neuburg

Bugs and requests

SubStreamer

Reported bugs

18 issues
  • Songs fail to play without double-pressing play button
  • Playback stops with 4 seconds remaining in track
  • Skipping back crashes the app
  • Large files (10MB+) require pause-then-play to start
  • Scrobbling fails despite server support
Show 13 more
  • AirPlay to Apple TV doesn't work
  • Time display incorrect for songs over 1 hour
  • Metadata loads too frequently, causing lag
  • App freezes when pulling down menu on player screen
  • Radio tab causes app freeze
  • Occasional non-responsive behavior
  • Crashes when switching between songs on cellular
  • Image optimization never completes on large libraries
  • Duplicate songs appear in multi-disc albums
  • Offline folder structure doesn't match server
  • Bluetooth playback sometimes plays two songs simultaneously
  • SSL support issues in older versions
  • Slow metadata loading from server

Requested features

18 requests
  • CarPlay support for in-car use
  • Traditional Chinese language support
  • Simplified Chinese language support
  • All-songs library view (not just albums/artists)
  • Lyrics API integration
Show 13 more
  • Replay gain support
  • Smart playlists for yearly recaps
  • Batch download for offline music
  • Display codec and bitrate information
  • Better shuffle/random playback options
  • Improved pull-down gesture for minimizing player
  • Unified offline music view with filters
  • Song sorting options in playlists
  • Album art display in more views
  • Radio station support visibility fix
  • Genre sorting capability
  • Lock screen playback controls
  • Queue clearing functionality

Dromio

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SubStreamer

No in-app purchases

None

Dromio

No in-app purchases

Questions

Is SubStreamer free?
SubStreamer is free to download, with no in-app purchases.
Is Dromio free?
Dromio is free to download, with no in-app purchases.
Do SubStreamer or Dromio have ads?
Neither SubStreamer nor Dromio shows ads.
Which is updated more often, SubStreamer or Dromio?
SubStreamer ships an update every 2 weeks, and Dromio every 2 months. Most recently, SubStreamer was updated on October 10, 2026 and Dromio on September 24, 2026.

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