# Chastia ONE vs Echo VMS Mobile

The clearest difference is update cadence: Chastia ONE at every 2 months against Echo VMS Mobile's every 16 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.

Chastia ONE ships an update every 2 months, Echo VMS Mobile every 16 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chastia ONE | Echo VMS Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Size | 31 MB | 60 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [CHASTIA s.r.o.](https://appshunter.io/developer/1672531414) | [CyCom Solutions Ltd](https://appshunter.io/developer/1755527626) |

## What reviewers say

### Chastia ONE

[App page](https://appshunter.io/ios/app/chastia-one/id1672531412)

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

**In-app purchases:** none


### Echo VMS Mobile

[App page](https://appshunter.io/ios/app/echo-vms-mobile/id6511224308)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chastia ONE free?

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

### Is Echo VMS Mobile free?

Echo VMS Mobile is free to download, with no in-app purchases.

### Do Chastia ONE or Echo VMS Mobile have ads?

Neither Chastia ONE nor Echo VMS Mobile shows ads.

### Which is updated more often, Chastia ONE or Echo VMS Mobile?

Chastia ONE ships an update every 2 months, and Echo VMS Mobile every 16 months. Most recently, Chastia ONE was updated on October 30, 2026 and Echo VMS Mobile on October 25, 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.*