# Zeliox ZAI4 vs Tru

The clearest difference is in-app purchases: Zeliox ZAI4 at none against Tru's 3. Zeliox ZAI4 also leads on iOS requirement (12.0 vs 18.2). Tru's advantage is update cadence (weekly vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Tru sells 3 in-app purchases, starting at $1.99 per month. Zeliox ZAI4 asks for nothing beyond the download.

Zeliox ZAI4 ships an update every 7 months, Tru weekly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zeliox ZAI4 | Tru |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Size | 34 MB | 7 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Zeliox](https://appshunter.io/developer/1478320738) | [Marco Frigerio](https://appshunter.io/developer/1873934230) |

## What reviewers say

### Zeliox ZAI4

[App page](https://appshunter.io/ios/app/zeliox-zai4/id6737747373)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tru

[App page](https://appshunter.io/ios/app/tru-control/id6758611832)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tru-Control Monthly Subscription | $1.99 | per month |
| Tru-Control Annual Subscription | $17.99 | per year |
| Tru-Control Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is Zeliox ZAI4 free?

Zeliox ZAI4 is free to download, with no in-app purchases.

### Is Tru free?

Tru is free to download, with in-app purchases available.

### Do Zeliox ZAI4 or Tru have ads?

Neither Zeliox ZAI4 nor Tru shows ads.

### Which is updated more often, Zeliox ZAI4 or Tru?

Zeliox ZAI4 ships an update every 7 months, and Tru weekly. Most recently, Zeliox ZAI4 was updated on October 27, 2026 and Tru on October 31, 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.*