# eSLS 인증 알리미 vs 척척학사

The clearest difference is review sentiment: 척척학사 at 100% against eSLS 인증 알리미's 0%. 척척학사 also leads on update cadence (every 2 weeks vs every 4 months). eSLS 인증 알리미's advantage is ads (none vs shown). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

eSLS 인증 알리미 ships an update every 4 months, 척척학사 every 2 weeks. The most recent releases landed on October 7, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | eSLS 인증 알리미 | 척척학사 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 87 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YBM NET, Inc.](https://appshunter.io/developer/332188969) | [Jinwook Lee](https://appshunter.io/developer/1819334651) |

## What reviewers say

### eSLS 인증 알리미

[App page](https://appshunter.io/ios/app/esls/id1466922189)

This app allows eSLS remote course students to conveniently verify their identity for attendance and authentication. It requires a smartphone and personal verification, preventing proxy authentication. Users can easily authenticate for daily logins after course registration.

**Highlights:** Personal smartphone authentication, Attendance and verification tool, Exclusive for eSLS remote course students, Daily authentication reset, SMS-based identity verification

**In-app purchases:** none


### 척척학사

[App page](https://appshunter.io/ios/app/id6747005390)

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

**In-app purchases:** none


## Frequently asked questions

### Is eSLS 인증 알리미 free?

eSLS 인증 알리미 is free to download, with no in-app purchases.

### Is 척척학사 free?

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

### Do eSLS 인증 알리미 or 척척학사 have ads?

척척학사 shows ads; eSLS 인증 알리미 does not.

### Which is updated more often, eSLS 인증 알리미 or 척척학사?

eSLS 인증 알리미 ships an update every 4 months, and 척척학사 every 2 weeks. Most recently, eSLS 인증 알리미 was updated on October 7, 2026 and 척척학사 on September 24, 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.*