BlueNote2 vs Cantus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BlueNote2
This music app allows users to create sounds and chords by tapping on a visual representation of frequencies. It offers a unique way to explore musical intervals and scales with a simple, intuitive interface.
- Visual frequency expression
- Tap to sound creation
- Explore musical intervals
- Major and minor chord generation
- Simple sign wave timbre
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BlueNote 2 is an instrument for the iPhone, born of the desire to listen to the sound between minor and major. The frequency of the chord is expressed visually. Tap two or more sounds, but the interval of the pressed point and the frequency of the sound are inversely proportional, so you can sound like the interval you pressed as the string of a string instrument. By the way, the timbre is a perfect sign wave. As everyone's reviews increase, we are going to make it evolve, so we appreciate your kind appreciation. *** How to use *** 1, tapping a certain place and tapping another place sounds. 2, It is not strict "C","D","E", but you can feel the scale by pushing the circumference from the outside in order. In the state of tapped 3 and 2 places the circle of the figure Tap on the intersection, a beautiful chord It will ring. The intersection of green and blue is major (major), red The intersection of blue and blue is minor. 4, tap the M mark on the top and tap two places in the figure, you will hear a major (big) sound. By the way, in the major code, the ratio of the sides of the triangle is 10: 12: 15
Cantus
This interactive tool helps musicians explore harmony and chord voicings on a virtual piano. It allows users to visualize how notes move within chords, understand modal relationships, and develop a feel for harmony through focused practice.
- Interactive chord and voicing exploration
- Piano keyboard visualization
- Modal and scale-based harmony practice
- Voice-leading movement analysis
- Tone.js audio playback
- Account-free operation
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Cantus - Voicing Lab is an interactive harmony and chord-voicing tool by Nathaniel School of Music for pianists, composers, producers, and music theory students. Explore how notes move inside chords, hear voicings in context, and study color, tension, and modal relationships from the keyboard. Cantus is designed as a focused practice lab: pick a sound, inspect the voice leading, and build intuition for how harmony feels under your hands. FEATURES * Interactive chord and voicing explorer * Piano keyboard visualization * Modal and scale-based harmony practice * Voice-leading movement and pinboard-style comparison * Tone.js audio playback * Self-hosted fonts and bundled web assets * Works without an account BY NATHANIEL SCHOOL OF MUSIC Built for practical harmony learning, composition practice, and deeper chord fluency.
Screenshots
Verdict
The clearest difference is rating: Cantus at 5.0 against BlueNote2's 3.7. Cantus also leads on update cadence (every 5 days vs every 12 months). BlueNote2's advantage is ratings volume (3 vs 1) and iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Cantus holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
BlueNote2 ships an update every 12 months, Cantus every 5 days. The most recent releases landed on October 9, 2026 and October 21, 2026 respectively.
| Parameter | BlueNote2 | Cantus |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 12 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Yaneurabeya | Jason Zachariah |
In-app purchases
BlueNote2
No in-app purchases
Cantus
No in-app purchases









