# Stackbox vs 이음

Stackbox and 이음 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Stackbox sells 2 in-app purchases, starting at $1.99 per month and 이음 sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Stackbox ships an update every 4 days, 이음 every 5 days. The most recent releases landed on September 24, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Stackbox | 이음 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | — | Freemium |
| Size | 33 MB | 27 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [YunJae Jeong](https://appshunter.io/developer/1568287924) | [kyeongju Moon](https://appshunter.io/developer/1878913458) |

## What reviewers say

### Stackbox

[App page](https://appshunter.io/ios/app/stackbox-rss-reader/id6758572761)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Yearly Plan | $19.99 | per year |


### 이음

[App page](https://appshunter.io/ios/app/id6783563581)

This app helps you achieve personal growth by connecting goals, habits, focus sessions, assets, and records in one place. Design your life on a large screen and practice on your phone, with data syncing automatically across devices.

**Highlights:** Mandala goal setting, Habit tracker with heatmap, Focus sessions with app lock, Vision board creation, Asset overview with real-time updates, Book tracking, Daily to-do and affirmations

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 이음 Pro 월간 | $0.49 | per month |
| 이음 Pro 연간 | $5.99 | per year |


## Frequently asked questions

### Is Stackbox free?

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

### Is 이음 free?

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

### Do Stackbox or 이음 have ads?

Neither Stackbox nor 이음 shows ads.

### Which is updated more often, Stackbox or 이음?

Stackbox ships an update every 4 days, and 이음 every 5 days. Most recently, Stackbox was updated on September 24, 2026 and 이음 on August 24, 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.*