# 계단업 vs 책력

The clearest difference is update cadence: 계단업 at every 11 days against 책력's every 2 months. 계단업 also leads on iOS requirement (13.0 vs 15.1). 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.

계단업 ships an update every 11 days, 책력 every 2 months. The most recent releases landed on August 12, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 계단업 | 책력 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Size | 58 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sangkoo Kang](https://appshunter.io/developer/1035571208) | [jeongrim oh](https://appshunter.io/developer/1893507432) |

## What reviewers say

### 계단업

[App page](https://appshunter.io/ios/app/id1154029317)

**Features:** Vision Pro support

**In-app purchases:** none


### 책력

[App page](https://appshunter.io/ios/app/id6762242539)

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

**In-app purchases:** none


## Frequently asked questions

### Is 계단업 free?

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

### Is 책력 free?

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

### Do 계단업 or 책력 have ads?

Neither 계단업 nor 책력 shows ads.

### Which is updated more often, 계단업 or 책력?

계단업 ships an update every 11 days, and 책력 every 2 months. Most recently, 계단업 was updated on August 12, 2026 and 책력 on September 9, 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.*