# Vodca vs 산안산기

The clearest difference is in-app purchases: 산안산기 at none against Vodca's 8. 산안산기 also leads on iOS requirement (15.1 vs 17.0). Vodca's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Vodca sells 8 in-app purchases, starting at $1.59 per month. 산안산기 asks for nothing beyond the download.

Vodca ships an update every 3 weeks, 산안산기 monthly. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Vodca | 산안산기 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 74 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seong Tack Kwon](https://appshunter.io/developer/1671946341) | [dasong sim](https://appshunter.io/developer/1883683802) |

## What reviewers say

### Vodca

[App page](https://appshunter.io/ios/app/vodca/id1671946339)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bartender+ | $1.59 | per month |
| Bartender+ Pro | $2.59 | per month |
| Bartender+ Pro | $25.90 | per year |
| Capacity 500 | $0.99 | one-time |
| Capacity 2500 | $3.99 | one-time |
| 10000 Credits | $4.99 | one-time |
| 22000 Credits | $9.99 | one-time |
| 48000 Credits | $19.99 | one-time |


### 산안산기

[App page](https://appshunter.io/ios/app/id6790620473)

This app helps users prepare for the Industrial Safety Engineer exam. It focuses on personalized review using an AI-based algorithm to identify weak areas and schedule optimal review times. Features include practice tests, detailed explanations, and progress tracking.

**Highlights:** AI-powered smart review algorithm (FSRS), Comprehensive practice questions and detailed explanations, Personalized weak point analysis and targeted practice, Mock exams simulating real test conditions, Progress tracking and study statistics, Customizable study plans and daily goals, Offline study modes and device synchronization

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

**In-app purchases:** none


## Frequently asked questions

### Is Vodca free?

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

### Is 산안산기 free?

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

### Do Vodca or 산안산기 have ads?

산안산기 shows ads; Vodca does not.

### Which is updated more often, Vodca or 산안산기?

Vodca ships an update every 3 weeks, and 산안산기 monthly. Most recently, Vodca was updated on October 19, 2026 and 산안산기 on October 18, 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.*