# 책력 vs Two Birds

The clearest difference is in-app purchases: 책력 at none against Two Birds's 1. 책력 also leads on ads (none vs shown). Two Birds's advantage is update cadence (every 2 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Two Birds sells 1 one-off in-app purchase. 책력 asks for nothing beyond the download.

책력 ships an update every 3 months, Two Birds every 2 weeks. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 책력 | Two Birds |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 32 MB | 63 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [jeongrim oh](https://appshunter.io/developer/1893507432) | [Tae Yong Park](https://appshunter.io/developer/6786132529) |

## What reviewers say

### 책력

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

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

**In-app purchases:** none


### Two Birds

[App page](https://appshunter.io/ios/app/two-birds-save-for-later/id6805783865)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| My way | $0.99 | one-time |


## Frequently asked questions

### Is 책력 free?

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

### Is Two Birds free?

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

### Do 책력 or Two Birds have ads?

Two Birds shows ads; 책력 does not.

### Which is updated more often, 책력 or Two Birds?

책력 ships an update every 3 months, and Two Birds every 2 weeks. Most recently, 책력 was updated on October 28, 2026 and Two Birds on October 29, 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.*