# Noteon vs SightPiano

The clearest difference is in-app purchases: Noteon at none against SightPiano's 1. SightPiano's advantage is update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SightPiano sells 1 in-app purchase, starting at $0.99 per month. Noteon asks for nothing beyond the download.

Noteon ships an update every 2 weeks, SightPiano every 6 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Noteon | SightPiano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/noteon-current-note-detector/id6785821020/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Free | — |
| Size | 14 MB | 503 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Anthony Chase](https://appshunter.io/developer/1859431539) | [Original Device LLC](https://appshunter.io/developer/1508858790) |

## What reviewers say

### Noteon

[App page](https://appshunter.io/ios/app/noteon-current-note-detector/id6785821020)

This app listens to single notes played into your device's microphone and displays the detected note as a large, full-screen letter with a unique color background. It's ideal for musicians practicing, teaching, or using a device as a dedicated note monitor.

**Highlights:** Real-time note detection, Large full-screen display, Color-coded notes, Simple, clutter-free design, Screen stays awake, Supports various instruments

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### SightPiano

[App page](https://appshunter.io/ios/app/sightpiano/id6797168851)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Continued Study | $0.99 | per month |


## Frequently asked questions

### Is Noteon free?

Noteon is free to download, with no in-app purchases.

### Is SightPiano free?

SightPiano is free to download, with in-app purchases available.

### Do Noteon or SightPiano have ads?

Neither Noteon nor SightPiano shows ads.

### Which is updated more often, Noteon or SightPiano?

Noteon ships an update every 2 weeks, and SightPiano every 6 days. Most recently, Noteon was updated on October 4, 2026 and SightPiano on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*