# LST 리더 vs 리슨90

The clearest difference is in-app purchases: LST 리더 at none against 리슨90's 2. LST 리더 also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 리슨90 sells 1 one-off in-app purchase. LST 리더 asks for nothing beyond the download.

LST 리더 ships an update fortnightly, 리슨90 every 9 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | LST 리더 | 리슨90 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/90-30/id6760108154/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free |
| Size | 29 MB | 79 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FENB Corp.](https://appshunter.io/developer/1476234100) | [Effi Inc.](https://appshunter.io/developer/899435456) |

## What reviewers say

### LST 리더

[App page](https://appshunter.io/ios/app/lst/id1488889346)

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

**In-app purchases:** none


### 리슨90

[App page](https://appshunter.io/ios/app/90-30/id6760108154)

Experience a revolutionary listening training program designed to improve English sound recognition in just 30 seconds. This app scientifically analyzes why Koreans struggle with English sounds and offers a systematic approach to enhance auditory perception.

**Highlights:** 30-second listening experience, Auditory resistance training, Pre- and post-training listening tests, Core and Master listening curricula, Linguistic and auditory analysis of listening difficulties, Personalized listening level assessment

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6개월 수강권 | $799.99 | one-time |


## Frequently asked questions

### Is LST 리더 free?

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

### Is 리슨90 free?

리슨90 is free to download, with in-app purchases available.

### Do LST 리더 or 리슨90 have ads?

Neither LST 리더 nor 리슨90 shows ads.

### Which is updated more often, LST 리더 or 리슨90?

LST 리더 ships an update fortnightly, and 리슨90 every 9 days. Most recently, LST 리더 was updated on October 25, 2026 and 리슨90 on October 25, 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.*