# CASOMS vs Coremail论客（私有版）

The clearest difference is update cadence: CASOMS at every 5 weeks against Coremail论客（私有版）'s every 10 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CASOMS ships an update every 5 weeks, Coremail论客（私有版） every 10 months. The most recent releases landed on July 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | CASOMS | Coremail论客（私有版） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 10 months |
| Size | 27 MB | 142 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [丽君 刘](https://appshunter.io/developer/997246580) | [Coremail Technology (Guangzhou) Co., Ltd.](https://appshunter.io/developer/1509174199) |

## What reviewers say

### CASOMS

[App page](https://appshunter.io/ios/app/casoms/id1388383576)

**Features:** macOS Compatibility

**In-app purchases:** none


### Coremail论客（私有版）

[App page](https://appshunter.io/ios/app/coremail/id1509174200)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CASOMS free?

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

### Is Coremail论客（私有版） free?

Coremail论客（私有版） is free to download, with no in-app purchases.

### Do CASOMS or Coremail论客（私有版） have ads?

Neither CASOMS nor Coremail论客（私有版） shows ads.

### Which is updated more often, CASOMS or Coremail论客（私有版）?

CASOMS ships an update every 5 weeks, and Coremail论客（私有版） every 10 months. Most recently, CASOMS was updated on July 21, 2026 and Coremail论客（私有版） on September 8, 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.*