Post vs Piano Visualizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Post
This app provides tools for analyzing post-tonal music, including pitch-class set and tone row calculations. It helps users identify Forte names, normal forms, prime forms, and relationships within musical sets.
- PC Set Calculator
- Subset/Superset Calculator
- Matrix Calculator
- Forte name analysis
- Normal form calculation
- Prime form identification
- Tone row analysis
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The Post-Tonal Tool Kit is designed to be a one-stop app for pitch-class and tone row analysis of post-tonal music. Features include a PC Set Calculator, a Subset/Superset Calculator, and a Matrix Calculator. –This app is perfect for the music theory student analyzing post-tonal music. –This app is also designed for the classroom and pedagogical uses. * With an Apple Dock Connector the screen can be projected in the classroom. * Analytical assignments can be designed to incorporate the features of the app that highlight relationships within sets and rows. The PC Set Calculator analyzes sets ranging from three to twelve pitches and provides: * Forte name * Normal form * Prime form * IC Vector * Z-Mate * Tn Invariance * TnI Invariance The calculator also will provide the inversion and complement sets with all the above information and all sets can be analyzed for subset and superset relationships (a very handy tool when analyzing Webern!). **WHAT’S NEW!!!** The Matrix Calculator will generate a matrix with any number of pitches up to twelve. The rows are numbered using the Straus/Roig-Francoli system (Introduction to Post-Tonal Theory/ Understanding Post-Tonal Music), where the P and I row labels correspond to the starting pitch class. Any number of pitch classes within the matrix can be highlighted and the selected set then sent back into the PC Set Calculator. This feature is extremely helpful when comparing trichords, tetrachords, and hexachords!
Piano Visualizer
Experience piano music like never before with detailed 3D animations of a grand piano's inner workings. Watch any music or MIDI file come to life with real-time, mechanically accurate visuals, including augmented reality and tactile feedback options.
- Mechanically accurate 3D grand piano model
- Versatile audio and MIDI input
- Live, real-time animation
- Transparent view mode
- Augmented Reality mode
- Tactile feedback (iOS)
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Dive into the elegance of piano music paired with groundbreaking technology. Piano Visualizer transforms how you experience music, offering a stunning 3D glimpse into the inner workings of a grand piano through detailed, mechanically accurate animations. Discover the Magic of Piano Visualizer: Imagine watching a piano play itself with exact precision - from the striking of each key to the movement of hammers and dampers. With Piano Visualizer, unleash the true beauty of piano performances right from your Mac, iPhone, iPad, or Apple Vision Pro. Key Features You’ll Love: - Mechanically Accurate 3D Model: Explore all intricacies of a grand piano in high-definition 3D. - Versatile Audio Input: Feed any music or midi file into the app and watch it come to life. - Live Animation: Enjoy real-time animations of a grand piano. - Transparent View Mode: Peek into the piano’s inner mechanisms with an innovative see-through display option. - Augmented Reality Mode: (Available on mobile devices) Step into new dimensions and view performances right in your living space. - Feel Every Note: (Available on iOS devices) Experience every keystroke with tactile feedback through CoreHaptics. Privacy and Convenience Hand in Hand: Your performances are personal. That’s why all processing in Piano Visualizer is conducted on your device, ensuring that your data remains private and secure with no internet connection required.
Screenshots
Verdict
The clearest difference is rating: Post at 4.3 against Piano Visualizer's 1.0. Post also leads on price ($4.99 vs $9.99) and chart position (#196 vs unranked). Piano Visualizer's advantage is device support (4 vs 2). On update cadence, 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
Post costs $4.99 and Piano Visualizer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Post holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Post has 6 ratings behind it against 1, so its average is the more settled of the two.
Post ships an update every 2 months, Piano Visualizer every 3 months. The most recent releases landed on August 9, 2026 and September 9, 2026 respectively.
| Parameter | Post | Piano Visualizer |
|---|---|---|
| Price | $4.99 — better | $9.99 |
| Rating | 4.3 (6 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #196 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 10.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 247 MB |
| Age rating | 4+ | 4+ |
| Developer | A Squared Applications | Weida Fan |
Customer experience
Post
Piano Visualizer
In-app purchases
Post
No in-app purchases
Piano Visualizer
No in-app purchases









