# T vs CK

The clearest difference is update cadence: T at every 6 weeks against CK's every 16 months. CK's advantage is iOS requirement (9.0 vs 13.0). 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.

T ships an update every 6 weeks, CK every 16 months. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | T | CK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 23.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 16 months |
| Monetization | Free | — |
| Size | 8 MB | 25 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EuroICC d.o.o.](https://appshunter.io/developer/1362060463) | [CARL KAMMERLING INTERNATIONAL LIMITED](https://appshunter.io/developer/1669128786) |

## What reviewers say

### T

[App page](https://appshunter.io/ios/app/t-smart/id1504665934)

Control and configure your domestic hot water system remotely via a Wi-Fi enabled thermostat. Turn traditional water heaters into smart home devices for convenient temperature management from your iOS device.

**Highlights:** Remote hot water control, Configure water temperature, Smart home integration, Wi-Fi enabled connectivity, iOS device compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### CK

[App page](https://appshunter.io/ios/app/ck-tools/id1669128784)

**In-app purchases:** none


## Frequently asked questions

### Is T free?

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

### Is CK free?

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

### Do T or CK have ads?

Neither T nor CK shows ads.

### Which is updated more often, T or CK?

T ships an update every 6 weeks, and CK every 16 months. Most recently, T was updated on September 23, 2026 and CK 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.*