# BlueKeyDetect vs MTC Generator

The clearest difference is iOS requirement: BlueKeyDetect at 10.0 against MTC Generator's 17.6. On price, rating, ratings volume and update cadence there is nothing between them.

BlueKeyDetect costs $0.99 and MTC Generator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for BlueKeyDetect against 5.0 for MTC Generator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

BlueKeyDetect ships an update every 8 months, MTC Generator every 9 months. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | BlueKeyDetect | MTC Generator |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/bluekeydetect/id1493584771/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/mtc-generator/id6754716373/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 9 months |
| Monetization | Paid | Paid |
| Size | 15 MB | 7 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Arnhold](https://appshunter.io/developer/432185706) | [Danyel Kern](https://appshunter.io/developer/1835867723) |

## What reviewers say

### BlueKeyDetect

[App page](https://appshunter.io/ios/app/bluekeydetect/id1493584771)

Instantly identify the musical key and tempo of songs by recording short audio clips. Ideal for musicians in jam sessions needing quick key information.

**Highlights:** Record audio clips, Detect musical key, Display beats per minute (BPM), Supports guitar and bass jam sessions, Multiple recording options for accuracy

**In-app purchases:** none


### MTC Generator

[App page](https://appshunter.io/ios/app/mtc-generator/id6754716373)

This application generates and sends MIDI Timecode (MTC) over a network to synchronize audio and lighting systems. It allows for precise control of playback, including starting, stopping, and resetting timecode, facilitating seamless rehearsals and live performances.

**Highlights:** Generates MIDI Timecode (MTC), Sends MTC via Network MIDI, Controls playback (Start, Stop, Reset), Synchronizes audio and lighting systems, Facilitates precise time jumps, Compatible with QLab

**In-app purchases:** none


## Frequently asked questions

### Is BlueKeyDetect free?

BlueKeyDetect costs $0.99, with no in-app purchases.

### Is MTC Generator free?

MTC Generator costs $0.99, with no in-app purchases.

### Which has better reviews, BlueKeyDetect or MTC Generator?

BlueKeyDetect and MTC Generator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do BlueKeyDetect or MTC Generator have ads?

Neither BlueKeyDetect nor MTC Generator shows ads.

### Which is updated more often, BlueKeyDetect or MTC Generator?

BlueKeyDetect ships an update every 8 months, and MTC Generator every 9 months. Most recently, BlueKeyDetect was updated on September 27, 2026 and MTC Generator on September 17, 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.*