# QuietCool Smart Control vs Key Library

The clearest difference is in-app purchases: QuietCool Smart Control at none against Key Library's 2. QuietCool Smart Control also leads on iOS requirement (13.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Key Library sells 2 one-off in-app purchases. QuietCool Smart Control asks for nothing beyond the download.

## The numbers

| Metric | QuietCool Smart Control | Key Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15K ratings)](https://appshunter.io/ios/app/quietcool-smart-control/id1481132594/reviews)** | — |
| Number of ratings | **15K** | — |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 145 MB | 4 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QC Manufacturing, Inc](https://appshunter.io/developer/1210475874) | [JOSHUA ADAM PEARCE-GARCIA](https://appshunter.io/developer/6801278941) |

## What reviewers say

### QuietCool Smart Control

[App page](https://appshunter.io/ios/app/quietcool-smart-control/id1481132594)

Manage your QuietCool attic fans remotely. Adjust fan speed, set run times, and monitor attic temperature and humidity. Utilize Smart Mode for automated adjustments and create custom presets for effortless control. View detailed analytics on fan performance and environmental conditions.

**Highlights:** Control fan speed, Set fan run times, View temperature and humidity, Enable Smart Mode, Add custom presets, View analytics

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works smoothly and reliably
- 👍 User-friendly and intuitive interface
- 🚀 Easy setup and installation
- 👍 No account required
- 🚀 Impressive Bluetooth range

**What reviewers complain about**

- 🐛 Connectivity issues after app updates
- 🔒 Limited remote access (Bluetooth-only)
- 🐛 Pairing issues with multiple devices
- 🐛 Bugs with smart mode and temperature settings
- 🐛 Unreliable WiFi connectivity

**Reported bugs**

- Firmware updates breaking existing functionality
- Inconsistent behavior with temperature and humidity settings
- Inability to stay connected after pairing a new device
- App failing to recognize the fan after updates

**Requested features**

- Add 'Quiet' mode to turn off fan during specified hours
- Integrate with weather data or allow time-of-day control
- Provide temperature/humidity history and trending
- Enable remote monitoring and control via WiFi or internet
- Allow multiple users to control the same fan


### Key Library

[App page](https://appshunter.io/ios/app/key-library/id6801278939)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $4.99 | one-time |
| Unlimited | $12.99 | one-time |


## Frequently asked questions

### Is QuietCool Smart Control free?

QuietCool Smart Control is free to download, with no in-app purchases.

### Is Key Library free?

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

### Do QuietCool Smart Control or Key Library have ads?

Neither QuietCool Smart Control nor Key Library 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.*