Comparison

LH Grain Pad vs Keys

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

Head to head
About

LH Grain Pad

This app is a powerful granular synthesizer with two independent channels for creating unique sound textures. It offers extensive control over grain parameters, built-in samples, and a variety of audio effects for complex sound design. Ideal for both live performance and studio production.

Highlights
  • Dual independent granular channels
  • 8 amplitude envelopes
  • Built-in sample library
  • Extensive audio effects suite
  • Touchpad grain control
  • Customizable pitch bar
  • OSC message support
  • Audio recorder
Features
Read full description

LH Grain, a granular synthesizer with two channels -- each channel independent for generating and controlling granular textures -- is focused on stunning granular sound. To make your grains unique, LH Grain offers you 8 kinds of amplitude envelopes used for the grains and built-in samples furnishing a wide variety of wave shapes. There are a lot of audio effects which give you more possibilities to process the sound and make the sound more complex. To take advantage of LH Grain to deal with both live performance and studio work, the touch pad visualizing the grains and the customizable pitch bar provide you with the easy way to control sound. The support for OSC format message makes it possible LH Grain’s associating with other devices in real time. When you are ready to play, you can record what your are producing and share your pieces with other devices. ------notice ------- LH Grain does not support Audiobus. ------features------ --Sample Location Control --Grain Waveform Selector --Frequency Jitter --Grain Duration & Density Control With Touchpad --Pitch Bar --OSC Format Message Receive & Send —Audio Recorder. ———-FXs——— EQ, Format Filter, Ring Modulation, Low/High/Band pass filter, Chorus, Flanger, Distortion, Delay, Reverb, 3D Sound.

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.

Screenshots

Keys4 screens

Verdict

The call

The clearest difference is rating: LH Grain Pad at 4.0 against Keys's 1.0. LH Grain Pad also leads on price ($2.99 vs $5.99) and ratings volume (4 vs 1). Keys's advantage is update cadence (every 10 months vs every 25 months). On ads, in-app purchases, monetization model and device support 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

LH Grain Pad costs $2.99 and Keys $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

LH Grain Pad holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

LH Grain Pad ships an update every 25 months, Keys every 10 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
LH Grain Pad versus Keys: the parameters behind the verdict, then further details
ParameterLH Grain PadKeys
Price$2.99 — better$5.99
Rating4.0 (4 ratings) — better1.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 25 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad — better
Requires iOS9.0 — better17.0
Further details — not scored
Size34 MB17 MB
Age rating4+4+
Developer昊 刘LittleCodeShop.com

Customer experience

LH Grain Pad

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Keys

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

In-app purchases

None

LH Grain Pad

No in-app purchases

None

Keys

No in-app purchases

Questions

Is LH Grain Pad free?
LH Grain Pad costs $2.99, with no in-app purchases.
Is Keys free?
Keys costs $5.99, with no in-app purchases.
Which has better reviews, LH Grain Pad or Keys?
LH Grain Pad is rated higher. LH Grain Pad averages 4.0 out of 5 from 4 ratings, while Keys averages 1.0 from 1 ratings.
Do LH Grain Pad or Keys have ads?
Neither LH Grain Pad nor Keys shows ads.
Which is updated more often, LH Grain Pad or Keys?
LH Grain Pad ships an update every 25 months, and Keys every 10 months. Most recently, LH Grain Pad was updated on November 1, 2026 and Keys on November 3, 2026.

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