# TrayMinder vs Sphinx Orthodontics Online

The clearest difference is review sentiment: TrayMinder at 64% against Sphinx Orthodontics Online's 0%. TrayMinder also leads on update cadence (daily vs fortnightly) and ratings volume (5.3K vs 1). Sphinx Orthodontics Online's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. TrayMinder sells 5 in-app purchases, starting at $4.99 per month. Sphinx Orthodontics Online asks for nothing beyond the download.

Sphinx Orthodontics Online holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: TrayMinder has 5.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 64% of TrayMinder's written reviews are positive against 0% of Sphinx Orthodontics Online's, so the app with the better star average is not the one people write more warmly about.

TrayMinder ships an update daily, Sphinx Orthodontics Online fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TrayMinder | Sphinx Orthodontics Online |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (5.3K ratings)](https://appshunter.io/ios/app/trayminder-aligner-timer/id1320684802/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sphinx-orthodontics-online/id1595611667/reviews)** |
| Number of ratings | **5.3K** | 1 |
| Positive reviews | **64.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#99** | — |
| Size | 172 MB | 98 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [TrayMinder LLC](https://appshunter.io/developer/1317535909) | [Sphinx Orthodontics](https://appshunter.io/developer/1595611669) |

## What reviewers say

### TrayMinder

[App page](https://appshunter.io/ios/app/trayminder-aligner-timer/id1320684802)

**Currently charting:** #99 Top Grossing · Medical (US App Store)

This app helps users stay on track with their clear aligner treatments. It provides tools for tracking wear time, setting reminders, and documenting progress with photos and notes. Advanced features are available through an optional subscription.

**Highlights:** Aligner wear time tracking, Smart reminders for tray insertion, Aligner change notifications, Progress photo documentation (Teethie), Calendar for appointments and notes, Wear data sharing with orthodontist

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TrayMinder+ | $4.99 | per month |
| TrayMinder+ | $39.99 | per year |
| (Legacy) Remove Ads | $1.99 | one-time |
| (Legacy) Apple Watch Support | $1.99 | one-time |
| TrayMinder+ (Lifetime) | $69.99 | one-time |

**What reviewers like**

- 👍 Well-designed and packed with features
- 🚀 Excellent tracking and reminders
- 📊 Helpful statistics and progress tracking
- 🔍 Detailed and customizable
- 🤖 Seamless Apple Watch integration

**What reviewers complain about**

- 🐛 Syncing and connectivity issues
- 🔋 Battery drain
- 🔒 Concerns about in-app purchases and subscriptions
- 🔍 Confusing or unintuitive UI elements

**Reported bugs**

- Photos not saving or uploading correctly
- Timer issues and inaccurate tracking
- Notification problems and duplicate reminders

**Requested features**

- Time zone adjustment for travelers
- Parental controls or multi-user support
- Countdown widget for home screen
- Customizable color themes
- Chewie reminder feature


### Sphinx Orthodontics Online

[App page](https://appshunter.io/ios/app/sphinx-orthodontics-online/id1595611667)

This app uses AI to assess dental needs and provides a report. It helps users find suitable dental clinics based on availability, services, and budget, and manage appointments.

**Highlights:** AI-based dental needs assessment, HIPAA-compliant PHI release, Clinic search by time availability, Provider matching based on needs, Dental insurance and budget setting, Appointment management, Exclusive deals and discounts

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

**In-app purchases:** none


## Frequently asked questions

### Is TrayMinder free?

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

### Is Sphinx Orthodontics Online free?

Sphinx Orthodontics Online is free to download, with no in-app purchases.

### Which has better reviews, TrayMinder or Sphinx Orthodontics Online?

Sphinx Orthodontics Online is rated higher. TrayMinder averages 4.7 out of 5 from 5.3K ratings, while Sphinx Orthodontics Online averages 5.0 from 1 ratings.

### Do TrayMinder or Sphinx Orthodontics Online have ads?

TrayMinder shows ads; Sphinx Orthodontics Online does not.

### Which is updated more often, TrayMinder or Sphinx Orthodontics Online?

TrayMinder ships an update daily, and Sphinx Orthodontics Online fortnightly. Most recently, TrayMinder was updated on October 29, 2026 and Sphinx Orthodontics Online on October 24, 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.*