# TST FLY vs 密达IM

The clearest difference is ads: TST FLY at none against 密达IM's shown. TST FLY also leads on iOS requirement (9.0 vs 13.0). On price, update cadence, 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.

TST FLY ships an update every 3 days, 密达IM every 2 days. Both last shipped on October 13, 2026.

## The numbers

| Metric | TST FLY | 密达IM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 4 MB | 171 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SHENZHEN TOUCHSTONE TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1441759734) | [广州友迅网络科技有限公司](https://appshunter.io/developer/1468862811) |

## What reviewers say

### TST FLY

[App page](https://appshunter.io/ios/app/tst-fly/id1441759735)

**Features:** macOS Compatibility

**In-app purchases:** none


### 密达IM

[App page](https://appshunter.io/ios/app/im/id6761409850)

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

**In-app purchases:** none


## Frequently asked questions

### Is TST FLY free?

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

### Is 密达IM free?

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

### Do TST FLY or 密达IM have ads?

密达IM shows ads; TST FLY does not.

### Which is updated more often, TST FLY or 密达IM?

TST FLY ships an update every 3 days, and 密达IM every 2 days. Most recently, TST FLY was updated on October 13, 2026 and 密达IM on October 13, 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.*