# Key Lens vs AumChord

The clearest difference is price: Key Lens at Free against AumChord's $3.99. AumChord's advantage is in-app purchases (none vs 1) and chart position (#181 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Key Lens is free to download; AumChord costs $3.99 up front. Key Lens sells 1 one-off in-app purchase. AumChord asks for nothing beyond the download.

## The numbers

| Metric | Key Lens | AumChord |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aumchord/id6775795973/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | — | Paid |
| Best chart rank | — | **#181** |
| Size | 64 MB | 1 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alex Amayo](https://appshunter.io/developer/1835625743) | [Mika Edelijn](https://appshunter.io/developer/6775541086) |

## What reviewers say

### Key Lens

[App page](https://appshunter.io/ios/app/key-lens/id6761850903)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Midi Output | $9.99 | one-time |


### AumChord

[App page](https://appshunter.io/ios/app/aumchord/id6775795973)

**Currently charting:** #181 Top Paid · Music (US App Store)

Create music instantly with an ambient chord synthesizer. Explore seven pads and a joystick to generate chords that fit any key, with a built-in synth engine and recording capabilities. Output MIDI for external control.

**Highlights:** Seven chord pads, Joystick for chord variation, Built-in synth engine with 17 sounds, Arpeggiator, Loop recording and layering, MIDI output for external synths

**In-app purchases:** none


## Frequently asked questions

### Is Key Lens free?

Key Lens is free to download, with in-app purchases available.

### Is AumChord free?

AumChord costs $3.99, with no in-app purchases.

### Do Key Lens or AumChord have ads?

Neither Key Lens nor AumChord 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.*