# Midi Poly Grid vs keffeine

The clearest difference is price: keffeine at Free against Midi Poly Grid's $3.99. Midi Poly Grid's advantage is iOS requirement (15.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

keffeine is free to download; Midi Poly Grid costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Midi Poly Grid ships an update every 11 days, keffeine fortnightly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Midi Poly Grid | keffeine |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/midi-poly-grid/id1633882803/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Paid | — |
| Size | 24 MB | 5 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Mueller](https://appshunter.io/developer/1633882805) | [Sebastian Mueller](https://appshunter.io/developer/441015592) |

## What reviewers say

### Midi Poly Grid

[App page](https://appshunter.io/ios/app/midi-poly-grid/id1633882803)

This app functions solely as a MIDI controller, requiring a host application or DAW to produce sound. It offers intuitive pad controls for melodies and finger drumming, with advanced modulation options like MPE and polyphonic aftertouch. Connect virtually or via USB/Bluetooth to other devices and DAWs.

**Highlights:** Size-adjustable grid of pads, MPE and polyphonic aftertouch modulation, Custom grid creation, Virtual MIDI connection, Preset saving, Multiple layouts and colors

**In-app purchases:** none


### keffeine

[App page](https://appshunter.io/ios/app/keffeine/id6758271726)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Midi Poly Grid free?

Midi Poly Grid costs $3.99, with no in-app purchases.

### Is keffeine free?

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

### Do Midi Poly Grid or keffeine have ads?

Neither Midi Poly Grid nor keffeine shows ads.

### Which is updated more often, Midi Poly Grid or keffeine?

Midi Poly Grid ships an update every 11 days, and keffeine fortnightly. Most recently, Midi Poly Grid was updated on October 13, 2026 and keffeine on October 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.*