# 安净 vs TrainTT

安净 and TrainTT are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

安净 ships an update every 6 days, TrainTT every 3 days. The most recent releases landed on October 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 安净 | TrainTT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 55 MB | 49 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Chengdu Xiaolan Technology Co., Ltd.](https://appshunter.io/developer/1473925368) | [Qian Yun Network Service Co., Ltd.](https://appshunter.io/developer/1567568557) |

## What reviewers say

### 安净

[App page](https://appshunter.io/ios/app/id1488560722)

**Features:** macOS Compatibility

**In-app purchases:** none


### TrainTT

[App page](https://appshunter.io/ios/app/traintt/id1597479690)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 安净 free?

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

### Is TrainTT free?

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

### Do 安净 or TrainTT have ads?

Neither 安净 nor TrainTT shows ads.

### Which is updated more often, 安净 or TrainTT?

安净 ships an update every 6 days, and TrainTT every 3 days. Most recently, 安净 was updated on October 3, 2026 and TrainTT on October 27, 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.*