# skkuverse vs Second

The clearest difference is in-app purchases: skkuverse at none against Second's 1. skkuverse also leads on review sentiment (100% vs 88%). Second's advantage is update cadence (every 4 days vs monthly). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Second sells 1 one-off in-app purchase. skkuverse asks for nothing beyond the download.

skkuverse ships an update monthly, Second every 4 days. The most recent releases landed on September 11, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | skkuverse | Second |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/second-sync/id6752860014/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **100.0% of reviews** | 88.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 108 MB | 49 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seungyong Cho](https://appshunter.io/developer/1679223604) | [Minjun Kim](https://appshunter.io/developer/1841275054) |

## What reviewers say

### skkuverse

[App page](https://appshunter.io/ios/app/skkuverse/id6446813434)

Navigate campus with an AI-powered announcement summarizer and interactive maps for both Humanities & Social Sciences and Natural Sciences campuses. Find classrooms easily with a code search and track shuttle bus locations.

**Highlights:** AI announcement summarization, Interactive campus maps, Building locator, Classroom code search, Shuttle bus tracking

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

**In-app purchases:** none


### Second

[App page](https://appshunter.io/ios/app/second-sync/id6752860014)

This utility app provides precise server time synchronization down to milliseconds, crucial for time-sensitive events like registrations and ticketing. It features drift tracking for sustained accuracy and a Picture-in-Picture timer for live monitoring while using other applications.

**Highlights:** Precise server time synchronization, Drift tracking for sustained accuracy, Picture-in-Picture (PiP) timer, Example site shortcuts, Multilingual support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 초정확 Pro 업그레이드 | $1.99 | one-time |


## Frequently asked questions

### Is skkuverse free?

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

### Is Second free?

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

### Do skkuverse or Second have ads?

Neither skkuverse nor Second shows ads.

### Which is updated more often, skkuverse or Second?

skkuverse ships an update monthly, and Second every 4 days. Most recently, skkuverse was updated on September 11, 2026 and Second on September 23, 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.*