# iRhythm Random vs Note Trainer

The clearest difference is price: Note Trainer at Free against iRhythm Random's $6.99. Note Trainer also leads on update cadence (every 3 days vs every 10 days). iRhythm Random's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Note Trainer is free to download; iRhythm Random costs $6.99 up front. Note Trainer sells 2 in-app purchases, starting at $2.99 per month. iRhythm Random asks for nothing beyond the download.

iRhythm Random ships an update every 10 days, Note Trainer every 3 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | iRhythm Random | Note Trainer |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | — | **[4.5 (6 ratings)](https://appshunter.io/ios/app/note-trainer-sight-reading/id6751864904/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 300 MB | 156 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maurizio Salvi](https://appshunter.io/developer/1736599893) | [Matt Jones](https://appshunter.io/developer/1704054970) |

## What reviewers say

### iRhythm Random

[App page](https://appshunter.io/ios/app/irhythm-random/id6479618009)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Note Trainer

[App page](https://appshunter.io/ios/app/note-trainer-sight-reading/id6751864904)

This app offers daily interactive music practice to enhance music theory, note recognition, ear training, and sight-reading skills. It provides guided lessons, challenges, and tools for musicians of all levels to improve their musicality.

**Highlights:** Sheet music reading, Note recognition, Ear training, Chord building, Rhythm practice, Sight reading improvement, Music theory lessons

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Lifetime Unlock | $24.99 | one-time |


## Frequently asked questions

### Is iRhythm Random free?

iRhythm Random costs $6.99, with no in-app purchases.

### Is Note Trainer free?

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

### Do iRhythm Random or Note Trainer have ads?

Note Trainer shows ads; iRhythm Random does not.

### Which is updated more often, iRhythm Random or Note Trainer?

iRhythm Random ships an update every 10 days, and Note Trainer every 3 days. Most recently, iRhythm Random was updated on October 11, 2026 and Note Trainer on October 12, 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.*