# 한국SGI X SDGs vs Postcards from Mori

The clearest difference is in-app purchases: 한국SGI X SDGs at none against Postcards from Mori's 1. Postcards from Mori's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Postcards from Mori sells 1 one-off in-app purchase. 한국SGI X SDGs asks for nothing beyond the download.

한국SGI X SDGs ships an update weekly, Postcards from Mori every 3 days. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 한국SGI X SDGs | Postcards from Mori |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 74 MB | 55 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KSGI](https://appshunter.io/developer/635177314) | [JeongHu Seo](https://appshunter.io/developer/1893014580) |

## What reviewers say

### 한국SGI X SDGs

[App page](https://appshunter.io/ios/app/sgi-x-sdgs/id6744599489)

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

**In-app purchases:** none


### Postcards from Mori

[App page](https://appshunter.io/ios/app/postcards-from-mori/id6786169105)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mori Supporter | $2.99 | one-time |


## Frequently asked questions

### Is 한국SGI X SDGs free?

한국SGI X SDGs is free to download, with no in-app purchases.

### Is Postcards from Mori free?

Postcards from Mori is free to download, with in-app purchases available.

### Do 한국SGI X SDGs or Postcards from Mori have ads?

Neither 한국SGI X SDGs nor Postcards from Mori shows ads.

### Which is updated more often, 한국SGI X SDGs or Postcards from Mori?

한국SGI X SDGs ships an update weekly, and Postcards from Mori every 3 days. Most recently, 한국SGI X SDGs was updated on October 23, 2026 and Postcards from Mori on October 21, 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.*