# LH Grain Pad vs Keys

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.

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.

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.

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.

## The numbers

| Metric | LH Grain Pad | Keys |
| --- | --- | --- |
| Price | **$2.99** | $5.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/lh-grain-pad/id926167601/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/keys-midi-controller/id1668785508/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 10 months** |
| Monetization | Paid | Paid |
| Size | 34 MB | 17 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [昊 刘](https://appshunter.io/developer/652348004) | [LittleCodeShop.com](https://appshunter.io/developer/288684013) |

## What reviewers say

### LH Grain Pad

[App page](https://appshunter.io/ios/app/lh-grain-pad/id926167601)

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:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*