Comparison

Keys vs GrimoHex

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Keys

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
Read full description

Transform your iPad or iPhone into a powerful Midi Master Keyboard with our app! Our app allows you to connect to any musical device and send Midi notes and Midi CC, making your mobile device a versatile tool for music production and live performance. Whether you're a professional musician or just starting out, our app offers a simple and intuitive interface to help you create, control, and perform music. With our app, you can easily connect to your digital audio workstation (DAW), synthesizers, and other musical devices to control virtual instruments and bring your musical ideas to life. Our app also supports MIDI over Bluetooth, allowing you to connect wirelessly to your musical devices. Plus, with the ability to customize your Midi mapping, you can personalize your setup to fit your unique needs. Take your music production and performance to the next level with our Midi Master Keyboard app for iPad and iPhone. Download now and experience the power of mobile music making.

About

GrimoHex

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
Read full description

GrimoHex is a modern sampler and step sequencer built for fast, tactile beat creation on iPhone. Designed for producers, electronic musicians, and mobile beat makers, GrimoHex gives you a focused hardware-inspired workflow without the clutter of a full DAW. Record sounds, shape samples, build patterns, and perform ideas quickly from a compact pad-based interface. At its core, GrimoHex combines a hands-on sampler, drum machine, and step sequencer into one streamlined music production app. It is made for sketching beats, building loops, sequencing drums, triggering samples, and creating patterns wherever inspiration hits. Key features: • Hardware-style pad workflow for fast beat making • 128-step sequencing for detailed pattern creation • Sample recording and playback • Trim, zoom, and sample editing tools • Real-time sound shaping controls • MIDI-focused sequencing workflow • Pattern-based music creation • Clean interface designed for speed and focus • Built for mobile producers, beat makers, and electronic artists GrimoHex is ideal for making drum patterns, sample-based beats, loops, sketches, and performance-ready ideas on the go. Whether you are building rhythms from recorded samples, sequencing external gear, or creating patterns directly on your phone, GrimoHex keeps the process fast and musical. A focused sampler. A tactile sequencer. A compact groovebox for iPhone.

Screenshots

Keys4 screens
GrimoHex4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Keys versus GrimoHex: the parameters behind the verdict, then further details
ParameterKeysGrimoHex
Price$5.99 — better$12.99
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 10 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size17 MB5 MB
Age rating4+4+
DeveloperLittleCodeShop.comJames Draper

Customer experience

Keys

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

GrimoHex

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Keys

No in-app purchases

None

GrimoHex

No in-app purchases

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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