# O2CHECK vs ALC

The clearest difference is review sentiment: ALC at 100% against O2CHECK's 33%. ALC also leads on update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

O2CHECK ships an update every 2 months, ALC fortnightly. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | O2CHECK | ALC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 17 MB | 8 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Secta9ine Co.,LTD.](https://appshunter.io/developer/519629650) | [The Chosunilbo Company](https://appshunter.io/developer/422051983) |

## What reviewers say

### O2CHECK

[App page](https://appshunter.io/ios/app/o2check/id1460212015)

This application provides a secure mobile card payment solution for smartphone users. It enables card payments through a secure IC reader connected to your smartphone, allowing merchants to process credit card transactions easily and quickly from anywhere.

**Highlights:** Secure mobile card payment processing, Uses secure IC reader for transactions, Supports all domestic and international credit cards, Easy to use and operate, Wireless connectivity, no separate line needed, Process payments anytime, anywhere

**Features:** macOS Compatibility

**In-app purchases:** none


### ALC

[App page](https://appshunter.io/ios/app/alc/id6447176374)

Access live and on-demand lectures from global leaders and business figures at a premier international event. Enjoy simultaneous language interpretation, review past sessions, and stay updated with conference announcements.

**Highlights:** Live lecture streaming, Bilingual interpretation (Korean/English), On-demand video library (VOD), Highlight reels and images, Conference announcements, Information on past speakers and topics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is O2CHECK free?

O2CHECK is free to download, with no in-app purchases.

### Is ALC free?

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

### Do O2CHECK or ALC have ads?

Neither O2CHECK nor ALC shows ads.

### Which is updated more often, O2CHECK or ALC?

O2CHECK ships an update every 2 months, and ALC fortnightly. Most recently, O2CHECK was updated on September 24, 2026 and ALC on October 3, 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.*