# Keys vs GrimoHex

The clearest difference is rating: GrimoHex at 5.0 against Keys's 1.0. GrimoHex also leads on update cadence (every 5 days vs every 10 months). Keys's advantage is price ($5.99 vs $12.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Keys costs $5.99 and GrimoHex $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GrimoHex holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Keys ships an update every 10 months, GrimoHex every 5 days. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Keys | GrimoHex |
| --- | --- | --- |
| Price | **$5.99** | $12.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/keys-midi-controller/id1668785508/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/grimohex/id6764228537/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 17 MB | 5 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LittleCodeShop.com](https://appshunter.io/developer/288684013) | [James Draper](https://appshunter.io/developer/1895693909) |

## What reviewers say

### Keys

[App page](https://appshunter.io/ios/app/keys-midi-controller/id1668785508)

Turn your mobile device into a versatile MIDI master keyboard. Connect wirelessly to musical instruments and DAWs to control virtual instruments and enhance your music production and live performances.

**Highlights:** Transform device into MIDI master keyboard, Connect to musical devices, Send MIDI notes and CC, Control virtual instruments, MIDI over Bluetooth, Customizable MIDI mapping

**Features:** Vision Pro support

**In-app purchases:** none


### GrimoHex

[App page](https://appshunter.io/ios/app/grimohex/id6764228537)

Create beats quickly with a tactile, hardware-inspired sampler and step sequencer. Record, shape, and sequence sounds for fast music production on your iPhone. Ideal for producers and beat makers on the go.

**Highlights:** Hardware-style pad workflow, 128-step sequencing, Sample recording and playback, Sample editing tools, Real-time sound shaping, MIDI-focused sequencing, Pattern-based music creation

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

**In-app purchases:** none


## Frequently asked questions

### Is Keys free?

Keys costs $5.99, with no in-app purchases.

### Is GrimoHex free?

GrimoHex costs $12.99, with no in-app purchases.

### Which has better reviews, Keys or GrimoHex?

GrimoHex is rated higher. Keys averages 1.0 out of 5 from 1 ratings, while GrimoHex averages 5.0 from 1 ratings.

### Do Keys or GrimoHex have ads?

Neither Keys nor GrimoHex shows ads.

### Which is updated more often, Keys or GrimoHex?

Keys ships an update every 10 months, and GrimoHex every 5 days. Most recently, Keys was updated on September 10, 2026 and GrimoHex on September 21, 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.*