# KD Serials vs Tru

The clearest difference is update cadence: Tru at every 6 days against KD Serials's every 4 weeks. KD Serials's advantage is iOS requirement (9.0 vs 18.2). 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.

KD Serials ships an update every 4 weeks, Tru every 6 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | KD Serials | Tru |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 6 days** |
| Size | 39 MB | 6 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Junce Instruments Co., Ltd.](https://appshunter.io/developer/1535583983) | [Marco Frigerio](https://appshunter.io/developer/1873934230) |

## What reviewers say

### KD Serials

[App page](https://appshunter.io/ios/app/kd-serials/id1576490437)

**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:** none


## Frequently asked questions

### Is KD Serials free?

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

### Is Tru free?

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

### Do KD Serials or Tru have ads?

Neither KD Serials nor Tru shows ads.

### Which is updated more often, KD Serials or Tru?

KD Serials ships an update every 4 weeks, and Tru every 6 days. Most recently, KD Serials was updated on October 1, 2026 and Tru on October 10, 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.*