# Note Trainer vs BIG BANG TO US

The clearest difference is in-app purchases: Note Trainer at none against BIG BANG TO US's 1. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. BIG BANG TO US sells 1 one-off in-app purchase. Note Trainer asks for nothing beyond the download.

Note Trainer ships an update every 3 weeks, BIG BANG TO US every 2 weeks. The most recent releases landed on October 8, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Note Trainer | BIG BANG TO US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/big-bang-to-us/id6795024569/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 36 MB | 474 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SiU Ahn](https://appshunter.io/developer/1601025745) | [Sang Heon Park](https://appshunter.io/developer/1675276100) |

## What reviewers say

### Note Trainer

[App page](https://appshunter.io/ios/app/note-trainer-sight-reading/id6780553641)

This app helps musicians improve their note-reading speed and accuracy through focused flash-quiz drills. It offers various modes to train instant recognition of notes on the staff, catering to different instruments and skill levels. Practice a few minutes daily to enhance your musical fluency and performance.

**Highlights:** Note ID flash-quiz, Find the note reverse drill, Do-Re-Mi / CDEFGAB systems, Time Attack and Survival modes, Weak-spot focus on missed notes, Progress tracking with stats, Offline functionality

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

**In-app purchases:** none


### BIG BANG TO US

[App page](https://appshunter.io/ios/app/big-bang-to-us/id6795024569)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BIG BANG TO US Unlock | $6.99 | one-time |


## Frequently asked questions

### Is Note Trainer free?

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

### Is BIG BANG TO US free?

BIG BANG TO US is free to download, with in-app purchases available.

### Do Note Trainer or BIG BANG TO US have ads?

Both Note Trainer and BIG BANG TO US show ads.

### Which is updated more often, Note Trainer or BIG BANG TO US?

Note Trainer ships an update every 3 weeks, and BIG BANG TO US every 2 weeks. Most recently, Note Trainer was updated on October 8, 2026 and BIG BANG TO US on November 1, 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.*