# Echo vs 사이그램

The clearest difference is in-app purchases: Echo at none against 사이그램's 5. 사이그램's advantage is update cadence (daily vs weekly) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 사이그램 sells 5 in-app purchases, starting at $6.99 per month. Echo asks for nothing beyond the download.

Echo ships an update weekly, 사이그램 daily. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Echo | 사이그램 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Daily** |
| Size | 51 MB | 59 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Isac Shin](https://appshunter.io/developer/1506465720) | [jongseok LEE](https://appshunter.io/developer/6781553080) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-thredr/id6799302088)

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

**In-app purchases:** none


### 사이그램

[App page](https://appshunter.io/ios/app/ai-sns/id6805879146)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 플러스 | $6.99 | per month |
| 프리미엄 | $14.00 | per month |
| 그램 1,200개 | $0.99 | one-time |
| 그램 7,000개 | $5.99 | one-time |
| 그램 16,000개 | $11.99 | one-time |


## Frequently asked questions

### Is Echo free?

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

### Is 사이그램 free?

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

### Do Echo or 사이그램 have ads?

Both Echo and 사이그램 show ads.

### Which is updated more often, Echo or 사이그램?

Echo ships an update weekly, and 사이그램 daily. Most recently, Echo was updated on October 31, 2026 and 사이그램 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.*