# Chord Sense Trainer vs QBRサバイバル

The clearest difference is in-app purchases: QBRサバイバル at none against Chord Sense Trainer's 5. QBRサバイバル also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chord Sense Trainer sells 5 in-app purchases, starting at $0.49 per month. QBRサバイバル asks for nothing beyond the download.

Chord Sense Trainer ships an update every 11 days, QBRサバイバル every 10 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Chord Sense Trainer | QBRサバイバル |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 10 days** |
| Monetization | Freemium | — |
| Size | 25 MB | 58 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Ruku Kobayashi](https://appshunter.io/developer/1707735136) | [Masaki Iino](https://appshunter.io/developer/6778272211) |

## What reviewers say

### Chord Sense Trainer

[App page](https://appshunter.io/ios/app/chord-sense-trainer/id6466735897)

This app helps musicians and aspiring musicians develop their ability to identify chords by ear. It offers quiz-style training that progresses in difficulty, with a custom mode for personalized practice. Train your ear for music transcription and composition anytime, anywhere.

**Highlights:** Quiz-style chord recognition, Progressive difficulty levels, Custom training mode, Theme and dark mode customization, Mobile practice for musicians

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan (Monthly) | $0.49 | per month |
| Gift sweets | $0.49 | one-time |
| Premium Plan (Lifetime) | $1.99 | one-time |
| Gift coffee | $2.99 | one-time |
| Gift for dinner | $5.99 | one-time |


### QBRサバイバル

[App page](https://appshunter.io/ios/app/qbr/id6782870043)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chord Sense Trainer free?

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

### Is QBRサバイバル free?

QBRサバイバル is free to download, with no in-app purchases.

### Do Chord Sense Trainer or QBRサバイバル have ads?

Neither Chord Sense Trainer nor QBRサバイバル shows ads.

### Which is updated more often, Chord Sense Trainer or QBRサバイバル?

Chord Sense Trainer ships an update every 11 days, and QBRサバイバル every 10 days. Most recently, Chord Sense Trainer was updated on October 7, 2026 and QBRサバイバル on October 9, 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.*