# Zync AI vs Small Key

The clearest difference is price: Zync AI at Free against Small Key's $4.99. Zync AI also leads on update cadence (every 3 months vs every 20 months) and iOS requirement (15.1 vs 17.0). Small Key's advantage is device support (4 vs 2). On ads and in-app purchases there is nothing between them.

Zync AI is free to download; Small Key costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zync AI ships an update every 3 months, Small Key every 20 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Zync AI | Small Key |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/small-key/id6740168314/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 20 months |
| Monetization | — | Paid |
| Size | 28 MB | 24 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Zync AI Inc](https://appshunter.io/developer/1782854390) | [Jason Hawkins](https://appshunter.io/developer/433622282) |

## What reviewers say

### Zync AI

[App page](https://appshunter.io/ios/app/zync-ai/id6738907299)

**Features:** macOS Compatibility

**In-app purchases:** none


### Small Key

[App page](https://appshunter.io/ios/app/small-key/id6740168314)

Transform your device into a versatile portable light source. Adjust brightness and color temperature by dragging your finger across the screen. Save custom presets for quick access and sync them across your devices.

**Highlights:** Portable key light, Adjustable brightness, Adjustable color temperature, Save custom presets, iCloud sync, Screen brightness control

**In-app purchases:** none


## Frequently asked questions

### Is Zync AI free?

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

### Is Small Key free?

Small Key costs $4.99, with no in-app purchases.

### Do Zync AI or Small Key have ads?

Neither Zync AI nor Small Key shows ads.

### Which is updated more often, Zync AI or Small Key?

Zync AI ships an update every 3 months, and Small Key every 20 months. Most recently, Zync AI was updated on October 30, 2026 and Small Key on October 28, 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.*