# TrainTT vs Flyvois

The clearest difference is update cadence: TrainTT at every 3 days against Flyvois's every 2 weeks. 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.

TrainTT ships an update every 3 days, Flyvois every 2 weeks. The most recent releases landed on October 1, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | TrainTT | Flyvois |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flyvois/id1659338575/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 49 MB | 98 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Qian Yun Network Service Co., Ltd.](https://appshunter.io/developer/1567568557) | [Chongqing Tuanwang Technology Co., LTD](https://appshunter.io/developer/1659338577) |

## What reviewers say

### TrainTT

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Flyvois

[App page](https://appshunter.io/ios/app/flyvois/id1659338575)

Securely communicate with end-to-end encrypted chat and share documents like Office files and PDFs. Enjoy cost-effective, large-scale group chats and customize the client with SDKs. Easily switch between multiple accounts on the same device and share your location with friends.

**Highlights:** End-to-end encrypted chat, Document viewing (Office, PDF, TXT), No third-party service fees, Large-scale group chats (10,000+ users), SDK for client customization, Multi-account login on one device, Location sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TrainTT free?

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

### Is Flyvois free?

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

### Do TrainTT or Flyvois have ads?

Neither TrainTT nor Flyvois shows ads.

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

TrainTT ships an update every 3 days, and Flyvois every 2 weeks. Most recently, TrainTT was updated on October 1, 2026 and Flyvois 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.*