# MIDI File Generator vs SL Knock

The clearest difference is update cadence: SL Knock at weekly against MIDI File Generator's every 6 months. MIDI File Generator's advantage is price ($1.99 vs $6.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

MIDI File Generator costs $1.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MIDI File Generator ships an update every 6 months, SL Knock weekly. The most recent releases landed on October 30, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | MIDI File Generator | SL Knock |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 1 MB | 29 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Conifer Productions Oy](https://appshunter.io/developer/550965412) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### MIDI File Generator

[App page](https://appshunter.io/ios/app/midi-file-generator/id6450380193)

**Features:** Vision Pro support

**In-app purchases:** none


### SL Knock

[App page](https://appshunter.io/ios/app/sl-knock/id6797349065)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is MIDI File Generator free?

MIDI File Generator costs $1.99, with no in-app purchases.

### Is SL Knock free?

SL Knock costs $6.99, with no in-app purchases.

### Do MIDI File Generator or SL Knock have ads?

Neither MIDI File Generator nor SL Knock shows ads.

### Which is updated more often, MIDI File Generator or SL Knock?

MIDI File Generator ships an update every 6 months, and SL Knock weekly. Most recently, MIDI File Generator was updated on October 30, 2026 and SL Knock on November 13, 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.*