# Dental Stack vs Clear Castle

Dental Stack and Clear Castle 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.

Dental Stack ships an update every 4 weeks, Clear Castle monthly. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Dental Stack | Clear Castle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/dental-stack/id6451335341/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Free | — |
| Size | 72 MB | 72 MB |
| Requires iOS | 16.1 | 16.1 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [DentalStack](https://appshunter.io/developer/1697611393) | [CLEAR CASTLE ALIGNERS LLP](https://appshunter.io/developer/1846129112) |

## What reviewers say

### Dental Stack

[App page](https://appshunter.io/ios/app/dental-stack/id6451335341)

This app helps users track their clear aligner treatment, ensuring they meet daily wear time goals and remember to change aligners on schedule. It allows for progress photo capture and secure sharing with doctors, providing insights and keeping users motivated throughout their orthodontic journey.

**Highlights:** Track daily aligner wear time, Reminders for aligner changes, Capture and share progress photos, Connect and communicate with doctor, View treatment timeline and milestones, Detailed aligner usage insights

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

**In-app purchases:** none


### Clear Castle

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dental Stack free?

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

### Is Clear Castle free?

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

### Do Dental Stack or Clear Castle have ads?

Neither Dental Stack nor Clear Castle shows ads.

### Which is updated more often, Dental Stack or Clear Castle?

Dental Stack ships an update every 4 weeks, and Clear Castle monthly. Most recently, Dental Stack was updated on September 17, 2026 and Clear Castle on September 18, 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.*