# TrayMinder vs SmileDiary

The clearest difference is ads: SmileDiary at none against TrayMinder's shown. TrayMinder's advantage is update cadence (daily vs every 5 days) and chart position (#76 vs unranked). On price, in-app purchases, monetization model 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 and SmileDiary sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

TrayMinder ships an update daily, SmileDiary every 5 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | TrayMinder | SmileDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5.3K ratings)](https://appshunter.io/ios/app/trayminder-aligner-timer/id1320684802/reviews)** | — |
| Number of ratings | **5.3K** | — |
| Positive reviews | 64.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 5 days |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#76** | — |
| Size | 167 MB | 12 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [TrayMinder LLC](https://appshunter.io/developer/1317535909) | [Nanjing Xiaowei Technology Co., Ltd.](https://appshunter.io/developer/1831757763) |

## What reviewers say

### TrayMinder

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

**Currently charting:** #76 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


### SmileDiary

[App page](https://appshunter.io/ios/app/smilediary-aligner-tracker/id6753011249)

This app helps you track your clear aligner treatment privately and securely. It offers a smart wear timer, visual calendar, progress photos, and detailed insights into your compliance, all without collecting your personal data.

**Highlights:** Private data storage, No registration required, Smart wear timer, Visual compliance calendar, Guided progress photos, Detailed treatment insights, Data export functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SmileDiary Pro Monthly | $2.99 | per month |
| SmileDiary Pro Annual | $12.99 | per year |
| SmileDiary Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is TrayMinder free?

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

### Is SmileDiary free?

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

### Do TrayMinder or SmileDiary have ads?

TrayMinder shows ads; SmileDiary does not.

### Which is updated more often, TrayMinder or SmileDiary?

TrayMinder ships an update daily, and SmileDiary every 5 days. Most recently, TrayMinder was updated on October 15, 2026 and SmileDiary on October 5, 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.*