# Clear Castle vs RxTrack aligner tracking

Clear Castle and RxTrack aligner tracking are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Clear Castle ships an update monthly, RxTrack aligner tracking every 2 months. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Clear Castle | RxTrack aligner tracking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 72 MB | 72 MB |
| Requires iOS | 16.1 | 16.1 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [CLEAR CASTLE ALIGNERS LLP](https://appshunter.io/developer/1846129112) | [SynapsehTech](https://appshunter.io/developer/1848703566) |

## What reviewers say

### Clear Castle

[App page](https://appshunter.io/ios/app/clear-castle/id6753986309)

**Features:** macOS Compatibility

**In-app purchases:** none


### RxTrack aligner tracking

[App page](https://appshunter.io/ios/app/rxtrack-aligner-tracking/id6754534135)

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

**In-app purchases:** none


## Frequently asked questions

### Is Clear Castle free?

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

### Is RxTrack aligner tracking free?

RxTrack aligner tracking is free to download, with no in-app purchases.

### Do Clear Castle or RxTrack aligner tracking have ads?

Neither Clear Castle nor RxTrack aligner tracking shows ads.

### Which is updated more often, Clear Castle or RxTrack aligner tracking?

Clear Castle ships an update monthly, and RxTrack aligner tracking every 2 months. Most recently, Clear Castle was updated on September 18, 2026 and RxTrack aligner tracking on September 15, 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.*