# 美齐日记 vs TrayBuddy

The clearest difference is in-app purchases: 美齐日记 at none against TrayBuddy's 2. 美齐日记 also leads on device support (3 vs 1) and iOS requirement (9.0 vs 17.0). TrayBuddy's advantage is update cadence (weekly vs every 5 months). On price and ads there is nothing between them.

Both are free to download. TrayBuddy sells 2 in-app purchases, starting at $9.99 per year. 美齐日记 asks for nothing beyond the download.

美齐日记 ships an update every 5 months, TrayBuddy weekly. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 美齐日记 | TrayBuddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/traybuddy/id6761814291/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 74 MB | 32 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [杭州美齐科技有限公司](https://appshunter.io/developer/1340901249) | [五花八萌(广州)网络科技有限公司](https://appshunter.io/developer/1891617621) |

## What reviewers say

### 美齐日记

[App page](https://appshunter.io/ios/app/id1340901250)

**Features:** macOS Compatibility

**In-app purchases:** none


### TrayBuddy

[App page](https://appshunter.io/ios/app/traybuddy/id6761814291)

Track your clear aligner wear time, manage treatment plans, and monitor expenses. Features include smart reminders, progress statistics, and secure photo storage to help you achieve your perfect smile.

**Highlights:** Automatic wear and removal time tracking, Smart reminders for aligner changes, Progress statistics and visual dashboard, Expense management and cost tracking, Flexible treatment plan customization, Encrypted aligner photo album, Chewie timer with auto recording

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Yearly Premium | $9.99 | per year |
| Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is 美齐日记 free?

美齐日记 is free to download, with no in-app purchases.

### Is TrayBuddy free?

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

### Do 美齐日记 or TrayBuddy have ads?

Neither 美齐日记 nor TrayBuddy shows ads.

### Which is updated more often, 美齐日记 or TrayBuddy?

美齐日记 ships an update every 5 months, and TrayBuddy weekly. Most recently, 美齐日记 was updated on October 26, 2026 and TrayBuddy on October 31, 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.*