# Alinear vs YAJI

The clearest difference is iOS requirement: YAJI at 17.0 against Alinear's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Alinear sells 3 in-app purchases, starting at $2.99 per month and YAJI sells 4 in-app purchases, starting at $1.09 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Alinear | YAJI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/yaji-braces-and-aligner-log/id6797192048/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | — | Freemium |
| Size | 33 MB | 21 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Anatolii Nehelia](https://appshunter.io/developer/1863414185) | [若涵 余](https://appshunter.io/developer/6796786119) |

## What reviewers say

### Alinear

[App page](https://appshunter.io/ios/app/alinear-aligner-tracker/id6762312765)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $19.99 | per year |
| Premium Lifetime | $29.99 | one-time |


### 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 (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 牙记 Pro 周体验 | $1.09 | per 7 days |
| Yaji Pro Monthly | $2.99 | per month |
| Yaji Pro Yearly | $14.99 | per year |
| Yaji Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Alinear free?

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

### Is YAJI free?

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

### Do Alinear or YAJI have ads?

Neither Alinear nor YAJI shows ads.

### Which is updated more often, Alinear or YAJI?

Alinear ships an update every 3 days, and YAJI every 3 days. Most recently, Alinear was updated on October 31, 2026 and YAJI on October 29, 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.*