# Knob16 vs Memory MIDI

The clearest difference is in-app purchases: Memory MIDI at none against Knob16's 1. Knob16's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Knob16 sells 1 one-off in-app purchase. Memory MIDI asks for nothing beyond the download.

Knob16 ships an update every 8 days, Memory MIDI fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Knob16 | Memory MIDI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Fortnightly |
| Size | 12 MB | 10 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [JURIJS KOSKINS](https://appshunter.io/developer/1888330126) | [Dmitrii Bondarchuk](https://appshunter.io/developer/6792041523) |

## What reviewers say

### Knob16

[App page](https://appshunter.io/ios/app/knob16/id6761230712)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knob16 Pro | $11.99 | one-time |


### Memory MIDI

[App page](https://appshunter.io/ios/app/memory-midi/id6792041521)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Knob16 free?

Knob16 is free to download, with in-app purchases available.

### Is Memory MIDI free?

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

### Do Knob16 or Memory MIDI have ads?

Memory MIDI shows ads; Knob16 does not.

### Which is updated more often, Knob16 or Memory MIDI?

Knob16 ships an update every 8 days, and Memory MIDI fortnightly. Most recently, Knob16 was updated on October 28, 2026 and Memory MIDI on October 31, 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.*