# TrainZilla for Clients vs VitalShiftAI

The clearest difference is update cadence: TrainZilla for Clients at every 5 days against VitalShiftAI'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.

TrainZilla for Clients ships an update every 5 days, VitalShiftAI every 2 weeks. The most recent releases landed on October 28, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | TrainZilla for Clients | VitalShiftAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 60 MB | 67 MB |
| Requires iOS | **15.1** | 16.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Nitish Gulati](https://appshunter.io/developer/1861753950) | [Ganesh Bhagavath](https://appshunter.io/developer/1883491749) |

## What reviewers say

### TrainZilla for Clients

[App page](https://appshunter.io/ios/app/trainzilla-for-clients/id6756607090)

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

**In-app purchases:** none


### VitalShiftAI

[App page](https://appshunter.io/ios/app/vitalshiftai/id6760256464)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TrainZilla for Clients free?

TrainZilla for Clients is free to download, with no in-app purchases.

### Is VitalShiftAI free?

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

### Do TrainZilla for Clients or VitalShiftAI have ads?

Neither TrainZilla for Clients nor VitalShiftAI shows ads.

### Which is updated more often, TrainZilla for Clients or VitalShiftAI?

TrainZilla for Clients ships an update every 5 days, and VitalShiftAI every 2 weeks. Most recently, TrainZilla for Clients was updated on October 28, 2026 and VitalShiftAI on October 23, 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.*