Whence? vs Demix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Whence?
Identify songs from TV shows and movies instantly. Discover where a track was featured on screen, complete with show posters and context. Save your favorite discoveries and revisit them anytime.
- Identify songs from screen in seconds
- Discover on-screen placements
- View show and movie context
- Save favorite songs
- History of identified tracks
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Whence helps you answer a simple question: “What’s this song? and where have I heard it on screen?” IDENTIFY IN SECONDS Record a short clip and get the track title and artist. From there, Whence pulls in where that song was used in TV and film, so you can connect the music to the moment. SEE THE SHOW OR MOVIE Browse placements with posters and context when available, so you can jump from a tune you love to the scene or series it came from. BUILT FOR FANS OF SOUNDTRACKS • Quick identification from the main screen • Rich result details for songs with on-screen appearances • History of what you’ve identified • Favorites to save songs you care about Whether you’re chasing a needle drop from last night’s episode or a song from a trailer, Whence is your shortcut from “what’s that song?” to “where was it used?” --- Whence is designed for discovering music in the context of what you watch.
Demix
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Demix separates any song into its individual instruments, right on your iPhone or iPad. Record or import a track and Demix splits it into up to six stems: drums, bass, vocals, guitar, piano, and other. Mute the vocals and sing it yourself, drop the guitar and play your part, or solo a single instrument to hear exactly what it plays. A per-stem mixer, finger scratching, and optional synth voices let you remix it however you like. Demix also makes an automatic transcription of each part, shown as a piano-roll, guitar and bass tab, staff notation, a chord lead sheet, and karaoke-style lyrics. It is generated on-device and meant as a visual guide to follow along, not a note-perfect score. Everything runs on your device. Nothing is uploaded, so your music stays private and works offline. WHAT YOU CAN DO • Separate a song into up to six stems: drums, bass, vocals, guitar, piano, and other • Mute or solo any stem: sing over a backing, or play a part yourself • Per-stem mixer with volume, pan and reverb, plus a real finger-driven scrub • Re-voice any stem with synth instruments and SoundFonts • Slow a section down or loop it to work on a passage • Follow an automatic transcription: tab, staff notation, chords, drum grid, and karaoke lyrics • Key, tempo and time-signature estimates • Export to MIDI or a project file for your DAW • Bundled demo songs to explore right away DEMIX PRO Demix is free to analyze and explore. A one-time Demix Pro unlock adds an unlimited project library, MIDI and project export, and synth playback with instrument voices and reverb. Made by an independent developer. Thanks for trying it.
Screenshots
Verdict
The clearest difference is in-app purchases: Whence? at none against Demix's 1. Whence? also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price 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. Demix sells 1 one-off in-app purchase. Whence? asks for nothing beyond the download.
| Parameter | Whence? | Demix |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 73 MB |
| Age rating | 4+ | 9+ |
| Developer | Saar Haber | David Weese |
In-app purchases
Whence?
No in-app purchases
Demix
- Demix Pro$8.99









