# 한국지능정보사회진흥원OTID vs PNUcal

The clearest difference is update cadence: PNUcal at every 3 days against 한국지능정보사회진흥원OTID's every 6 weeks. 한국지능정보사회진흥원OTID's advantage is iOS requirement (9.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

한국지능정보사회진흥원OTID ships an update every 6 weeks, PNUcal every 3 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 한국지능정보사회진흥원OTID | PNUcal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Size | 38 MB | 79 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KOREAEXPERT](https://appshunter.io/developer/1161606505) | [Junseo Lee](https://appshunter.io/developer/1806994124) |

## What reviewers say

### 한국지능정보사회진흥원OTID

[App page](https://appshunter.io/ios/app/otid/id1182322196)

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

**In-app purchases:** none


### PNUcal

[App page](https://appshunter.io/ios/app/pnucal/id6753673614)

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

**In-app purchases:** none


## Frequently asked questions

### Is 한국지능정보사회진흥원OTID free?

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

### Is PNUcal free?

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

### Do 한국지능정보사회진흥원OTID or PNUcal have ads?

Neither 한국지능정보사회진흥원OTID nor PNUcal shows ads.

### Which is updated more often, 한국지능정보사회진흥원OTID or PNUcal?

한국지능정보사회진흥원OTID ships an update every 6 weeks, and PNUcal every 3 days. Most recently, 한국지능정보사회진흥원OTID was updated on October 26, 2026 and PNUcal on October 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.*