# Check1.2 vs AudioEngineer EAR Trainer

The clearest difference is in-app purchases: AudioEngineer EAR Trainer at none against Check1.2's 1. Check1.2's advantage is update cadence (daily vs every 3 weeks) and iOS requirement (17.0 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Check1.2 sells 1 one-off in-app purchase. AudioEngineer EAR Trainer asks for nothing beyond the download.

Check1.2 ships an update daily, AudioEngineer EAR Trainer every 3 weeks. Both last shipped on October 15, 2026.

## The numbers

| Metric | Check1.2 | AudioEngineer EAR Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 18 MB | 2 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Daisuke Kawaue](https://appshunter.io/developer/6792583105) | [HYO SEOP LEE](https://appshunter.io/developer/6790621758) |

## What reviewers say

### Check1.2

[App page](https://appshunter.io/ios/app/check12-feedback-checker/id6792583103)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $6.99 | one-time |


### AudioEngineer EAR Trainer

[App page](https://appshunter.io/ios/app/audioengineer-ear-trainer/id6801893036)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Check1.2 free?

Check1.2 is free to download, with in-app purchases available.

### Is AudioEngineer EAR Trainer free?

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

### Do Check1.2 or AudioEngineer EAR Trainer have ads?

Neither Check1.2 nor AudioEngineer EAR Trainer shows ads.

### Which is updated more often, Check1.2 or AudioEngineer EAR Trainer?

Check1.2 ships an update daily, and AudioEngineer EAR Trainer every 3 weeks. Most recently, Check1.2 was updated on October 15, 2026 and AudioEngineer EAR Trainer on October 15, 2026.

---

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