# 이지온메일 vs 완충e

The clearest difference is review sentiment: 이지온메일 at 92% against 완충e's 13%. 이지온메일 also leads on rating (4.8 vs 1.0) and ratings volume (12 vs 2). 완충e's advantage is update cadence (every 5 days vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

이지온메일 holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: 이지온메일 has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 92% of 이지온메일's written reviews are positive against 13% of 완충e's.

이지온메일 ships an update every 3 months, 완충e every 5 days. The most recent releases landed on July 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 이지온메일 | 완충e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/id1409731691/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/e/id1531816431/reviews) |
| Number of ratings | **12** | 2 |
| Positive reviews | **91.8% of reviews** | 13.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 45 MB | 63 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [myunghee choi](https://appshunter.io/developer/1409731210) | [에브리포터블(주)](https://appshunter.io/developer/1515091508) |

## What reviewers say

### 이지온메일

[App page](https://appshunter.io/ios/app/id1409731691)

Send real letters from your phone! Write a message and attach photos, and this service will mail a physical letter via the post office. It offers various themed cards for occasions like birthdays and holidays.

**Highlights:** Send physical letters via app, Same-day post office submission, Attach photos to letters, Themed cards available, Christmas, New Year, Birthday cards

**Features:** macOS Compatibility

**In-app purchases:** none


### 완충e

[App page](https://appshunter.io/ios/app/e/id1531816431)

This service allows users to easily rent and return portable chargers via QR code. Simply rent when needed, and return the charger after use without needing the app for the return process.

**Highlights:** QR code rental, Easy return, On-demand battery charging, Convenient service

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient for emergencies
- 👍 Fast charging speed (mentioned by a few)
- 👍 Multiple charging ports
- 👍 Quick customer service feedback (rare but mentioned)

**What reviewers complain about**

- 🐛 Login issues (frequent)
- 🐛 Payment/card registration failures
- 🐛 Battery not charging/malfunctioning
- 🐛 Return/refund issues
- 🐛 Inconsistent charging speed

**Reported bugs**

- Login authentication failures (Kakao, Naver)
- Payment gateway errors (card registration, payment failure)
- Batteries not charging or showing as charging when they are not
- Return process not registering, leading to extra charges
- App crashes or errors preventing usage

**Requested features**

- Improve login system stability
- Fix payment processing errors
- Ensure battery quality before rental
- Provide clearer return instructions/confirmation
- Improve customer service availability and responsiveness


## Frequently asked questions

### Is 이지온메일 free?

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

### Is 완충e free?

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

### Which has better reviews, 이지온메일 or 완충e?

이지온메일 is rated higher. 이지온메일 averages 4.8 out of 5 from 12 ratings, while 완충e averages 1.0 from 2 ratings.

### Do 이지온메일 or 완충e have ads?

Neither 이지온메일 nor 완충e shows ads.

### Which is updated more often, 이지온메일 or 완충e?

이지온메일 ships an update every 3 months, and 완충e every 5 days. Most recently, 이지온메일 was updated on July 5, 2026 and 완충e on September 26, 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.*