# YAJI vs Aligner Tracker

The clearest difference is price: YAJI at Free against Aligner Tracker's $2.99. On rating, ratings volume, update cadence and ads there is nothing between them.

YAJI is free to download; Aligner Tracker costs $2.99 up front. YAJI sells 3 in-app purchases, starting at $2.99 per month and Aligner Tracker sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for YAJI against 5.0 for Aligner Tracker. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

YAJI ships an update every 3 days, Aligner Tracker every 4 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | YAJI | Aligner Tracker |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/yaji-braces-and-aligner-log/id6797192048/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/aligner-tracker-alignerdiary/id6811375012/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 20 MB | 41 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [若涵 余](https://appshunter.io/developer/6796786119) | [智寅 丁](https://appshunter.io/developer/6811367430) |

## What reviewers say

### YAJI

[App page](https://appshunter.io/ios/app/yaji-braces-and-aligner-log/id6797192048)

This app helps users track their orthodontic journey with braces or clear aligners. It allows for guided photo records, comparison of progress over time, and setting reminders for appointments and aligner wear. It is designed for privacy, keeping all data on the device.

**Highlights:** Guided photo records, Progress comparison tools, Customizable reminders, Aligner wear tracking, Private on-device journal, Progress video creation

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yaji Pro Monthly | $2.99 | per month |
| Yaji Pro Yearly | $14.99 | per year |
| Yaji Pro Lifetime | $39.99 | one-time |


### Aligner Tracker

[App page](https://appshunter.io/ios/app/aligner-tracker-alignerdiary/id6811375012)

Track your clear aligner wear time, schedule changes, and store progress photos. This app offers local-first data storage with optional private iCloud backup and customizable themes. It provides reminders and home screen widgets for easy access to your treatment information.

**Highlights:** Record aligner wear with one tap, Tray-by-tray calendar and timeline, Private photo record keeping, Customizable reminders and widgets, Local-first data storage, Optional private iCloud backup, Multiple visual themes and languages

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 曲奇 | $0.99 | one-time |
| 美式 | $1.99 | one-time |
| 拿铁 | $2.99 | one-time |
| SOE | $3.99 | one-time |


## Frequently asked questions

### Is YAJI free?

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

### Is Aligner Tracker free?

Aligner Tracker costs $2.99, and also offers in-app purchases.

### Which has better reviews, YAJI or Aligner Tracker?

YAJI and Aligner Tracker are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do YAJI or Aligner Tracker have ads?

Neither YAJI nor Aligner Tracker shows ads.

### Which is updated more often, YAJI or Aligner Tracker?

YAJI ships an update every 3 days, and Aligner Tracker every 4 days. Most recently, YAJI was updated on October 18, 2026 and Aligner Tracker on October 14, 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.*