# Campusletter vs 에코

The clearest difference is device support: Campusletter at 3 against 에코's 1. Campusletter also leads on iOS requirement (12.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Campusletter ships an update every 11 days, 에코 weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Campusletter | 에코 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Free | — |
| Size | 47 MB | 17 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [JAEYONG SHIN](https://appshunter.io/developer/1722371206) | [Junho Lee](https://appshunter.io/developer/1886098870) |

## What reviewers say

### Campusletter

[App page](https://appshunter.io/ios/app/campusletter/id6474706243)

Connect with university peers through anonymous letter exchanges. Share thoughts and feelings, fostering empathy and understanding in a safe, structured environment. Discover new perspectives and build a supportive community.

**Highlights:** Anonymous letter exchange, Random partner matching, Preference-based communication, Daily letter limit, Focus on sincerity and empathy, Safe space for expression

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

**In-app purchases:** none


### 에코

[App page](https://appshunter.io/ios/app/id6797244510)

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

**In-app purchases:** none


## Frequently asked questions

### Is Campusletter free?

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

### Is 에코 free?

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

### Do Campusletter or 에코 have ads?

Neither Campusletter nor 에코 shows ads.

### Which is updated more often, Campusletter or 에코?

Campusletter ships an update every 11 days, and 에코 weekly. Most recently, Campusletter was updated on November 4, 2026 and 에코 on October 31, 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.*