# Aurora (MIDI Controller) vs Chord Borrower

Aurora (MIDI Controller) and Chord Borrower are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Aurora (MIDI Controller) costs $2.99 and Chord Borrower $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Aurora (MIDI Controller) | Chord Borrower |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aurora-midi-controller/id1613073943/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Paid | — |
| Size | 6 MB | 186 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jason Snell](https://appshunter.io/developer/866134040) | [Aaron Wilford](https://appshunter.io/developer/6798852285) |

## What reviewers say

### Aurora (MIDI Controller)

[App page](https://appshunter.io/ios/app/aurora-midi-controller/id1613073943)

Transform space weather data into musical expression with this live MIDI controller. Connect to your DAW and map real-time electromagnetic readings to create unique soundscapes and dynamic tracks.

**Highlights:** Live data streaming from observatories, Flexible MIDI mapping, Connects to DAWs like Ableton Live, Cross-platform compatibility (iOS, macOS), Creates ambient and techno music

**Features:** macOS Compatibility

**In-app purchases:** none


### Chord Borrower

[App page](https://appshunter.io/ios/app/chord-borrower/id6798852283)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aurora (MIDI Controller) free?

Aurora (MIDI Controller) costs $2.99, with no in-app purchases.

### Is Chord Borrower free?

Chord Borrower costs $2.99, with no in-app purchases.

### Do Aurora (MIDI Controller) or Chord Borrower have ads?

Neither Aurora (MIDI Controller) nor Chord Borrower shows ads.

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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.*