# SyncKing vs Unit Converter

The clearest difference is in-app purchases: SyncKing at none against Unit Converter's 2. SyncKing also leads on iOS requirement (9.0 vs 15.0). Unit Converter's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Unit Converter sells 2 in-app purchases, starting at $2.49 per month. SyncKing asks for nothing beyond the download.

SyncKing ships an update every 2 months, Unit Converter every 2 weeks. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SyncKing | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (11 ratings)](https://appshunter.io/ios/app/syncking/id974625253/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 57 MB | 49 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ashley Richards](https://appshunter.io/developer/426268500) | [Petrichka Yaroslav](https://appshunter.io/developer/1032980882) |

## What reviewers say

### SyncKing

[App page](https://appshunter.io/ios/app/syncking/id974625253)

Create and host interactive second screen experiences for live streams or local multiplayer games. Customize with widgets like images, scoreboards, and status updates for real-time audience engagement. Requires a WiFi or cellular connection for both host and viewer.

**Highlights:** Host custom second screen experiences, Real-time widget updates, Scoreboard display, Status sharing, Audience notifications, Connect via 4-digit code

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-univerter/id6738687525)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.49 | per month |
| Yearly Premium | $14.99 | per year |


## Frequently asked questions

### Is SyncKing free?

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

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Do SyncKing or Unit Converter have ads?

Neither SyncKing nor Unit Converter shows ads.

### Which is updated more often, SyncKing or Unit Converter?

SyncKing ships an update every 2 months, and Unit Converter every 2 weeks. Most recently, SyncKing was updated on October 18, 2026 and Unit Converter on October 7, 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.*