# BlueHHT vs KT

The clearest difference is update cadence: KT at every 3 weeks against BlueHHT's every 12 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.

BlueHHT ships an update every 12 months, KT every 3 weeks. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | BlueHHT | KT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 15 MB | 3 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) | [Globalsat Technology Corporation.](https://appshunter.io/developer/624997558) |

## What reviewers say

### BlueHHT

[App page](https://appshunter.io/ios/app/bluehht/id1551056680)

**Features:** macOS Compatibility

**In-app purchases:** none


### KT

[App page](https://appshunter.io/ios/app/kt-520/id6448007280)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BlueHHT free?

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

### Is KT free?

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

### Do BlueHHT or KT have ads?

Neither BlueHHT nor KT shows ads.

### Which is updated more often, BlueHHT or KT?

BlueHHT ships an update every 12 months, and KT every 3 weeks. Most recently, BlueHHT was updated on October 2, 2026 and KT on October 15, 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.*