# SealChat vs DDT

The clearest difference is update cadence: DDT at weekly against SealChat's monthly. SealChat's advantage is iOS requirement (9.0 vs 12.0). 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.

SealChat ships an update monthly, DDT weekly. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | SealChat | DDT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 88 MB | 42 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [北京创奇易科技有限公司](https://appshunter.io/developer/1682825654) | [Guangzhou Baimaode Logistics Technology Co., Ltd.](https://appshunter.io/developer/1714375509) |

## What reviewers say

### SealChat

[App page](https://appshunter.io/ios/app/sealchat/id1597073797)

**Features:** macOS Compatibility

**In-app purchases:** none


### DDT

[App page](https://appshunter.io/ios/app/ddt/id6475088111)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SealChat free?

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

### Is DDT free?

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

### Do SealChat or DDT have ads?

Neither SealChat nor DDT shows ads.

### Which is updated more often, SealChat or DDT?

SealChat ships an update monthly, and DDT weekly. Most recently, SealChat was updated on October 5, 2026 and DDT on October 19, 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.*