MuSA_RT vs Guide Track
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MuSA_RT
This app visualizes music tonality in 3D using advanced algorithms. It analyzes audio from your microphone to identify chords and keys, displaying them with a rotating camera or in augmented reality.
- 3D tonality visualization
- Audio analysis for pitch and context
- Chord and key identification
- Augmented Reality mode
- Smooth camera rotation for unobstructed views
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MuSA_RT applies music analysis algorithms rooted in Elaine Chew’s Spiral Array model of tonality, which also provides the 3D geometry for the visualization space. The app analyzes the audio signal received from a microphone to determine pitch names, maintain short term and longterm tonal context trackers, each a Center of Effect (CE), and compute the closest triads (3-note chords) and keys as the music unfolds in performance. The 3D view presents a graphical representations of these tonal entities in context, smoothly rotating the virtual camera to provide an unobstructed view of the current information. These graphics can also be visualized in an experimental Augmented Reality mode on compatible devices.
Guide Track
This tool helps musicians quickly create precise guide tracks for recording. It allows users to input song structure, chords, and beat styles to generate smart click tracks, chord charts, and even basic drum and bass lines.
- Create precise guide tracks
- Input song structure, chords, and beat styles
- Generate smart click tracks
- Create chord sheets
- Automated bass track
- Over 35 stock drum patterns
- Supports Inter-app audio and Audiobus 2
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From the US Store: Songwriter's pre-production tool extraordinaire ! ***** by Mythmongrel - Version - 1.2.0 - Oct 31, 2014 The best app for easily laying out the form of a composition. It's does exactly what it's meant to do and it keeps getting better. Highly recommend it. Accept No Substitutes. ***** by Focusking - Version - 1.2.0 - Oct 9, 2014 Get this app, and you are in for a pleasant surprise; it's versatile, it's multi-purpose, and it knocks the competition out of the game. And, unlike other developers, this dev responds promptly, and positively. Are you a songwriter, electronic composer or are you in a band? Do you record your music and sometimes have trouble getting started or laying down tracks to record on top of? If the answer to either of these questions is yes then you owe it to yourself to own Guide Track! Guide Track is the primary go-to tool when you want to quickly create a precise guide track for recording when you know the song structure and the style. Simply enter in the time signature (which you can change at any time during the song), which chords (or rests) for how many beats and the beat style—Guide Track does the rest for you! Use inter-app audio or AudioBus 2 or save your track to file and you are ready to start recording for real with a perfect smart click track and guide chords, drums and bass. Save hours of messing around and get to what matters—your creativity. Once done you can mute the guide track to reveal your perfectly structured recording. It's like a sculptor using a mold when casting, except instead of bronze, you end up with perfectly structured music. You may want to even keep your guide track in there or record one of the parts such as bass or arpeggios as a real track, especially if you use a professional synth via MIDI out. You can also use Guide Track to print out chord sheets for your band or to capture song ideas or for recording aid. Features • Records stereo WAV file that can be copied and pasted, saved to Dropbox or emailed • Supports Inter-app recording and Audiobus 2 • Saves 5-track Type 1 MIDI files • Direct output to any MIDI device • All major chord families covered with chord inversions with choice of accidentals • Independent automated bass track with separate octave and sound controls • Change bass note to any desired value for a given chord change • Over 35 stock drum patterns • Click and Count-in • Add lyrics to your score • 128 GM Sounds on two different synths • Several chord play styles including 6 arpeggio patterns • Instant chord sheet which can be printed or emailed as PDF • Add various rests or chords as needed • Transpose songs any time • Time signatures that readjust beat structures for you • Preview chords before inserting • Undo and Redo • Automate changes to tempo, time signature, volume, play style and more during playback • Define up to 6 reusable named sections for ultra fast song creation • Innovative section navigator helps you move around your song • Rearrange or insert chords, rests or sections • Looping playback
Screenshots
Verdict
The clearest difference is review sentiment: Guide Track at 50% against MuSA_RT's 0%. Guide Track also leads on ratings volume (8 vs 1). MuSA_RT's advantage is price (Free vs $3.99) and rating (5.0 vs 3.9). On update cadence, ads, in-app purchases and iOS requirement 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
MuSA_RT is free to download; Guide Track costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MuSA_RT holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Guide Track has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of MuSA_RT's written reviews are positive against 50% of Guide Track's, so the app with the better star average is not the one people write more warmly about.
MuSA_RT ships an update every 3 months, Guide Track every 2 months. The most recent releases landed on June 5, 2026 and June 2, 2026 respectively.
| Parameter | MuSA_RT | Guide Track |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 5.0 (1 ratings) — better | 3.9 (8 ratings) |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 1 | 8 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPad |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexandre Francois | Techné Media |
Customer experience
MuSA_RT
Guide Track
In-app purchases
MuSA_RT
No in-app purchases
Guide Track
No in-app purchases








