# AI老花镜 vs Thyroid Tracker

The clearest difference is price: Thyroid Tracker at Free against AI老花镜's $0.99. AI老花镜's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

Thyroid Tracker is free to download; AI老花镜 costs $0.99 up front. Thyroid Tracker sells 3 in-app purchases, starting at $2.99 per month. AI老花镜 asks for nothing beyond the download.

AI老花镜 ships an update weekly, Thyroid Tracker every 4 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | AI老花镜 | Thyroid Tracker |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 4 MB | 37 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [岚 孟](https://appshunter.io/developer/1639358007) | [Chengdu Xingguan Technology Co., Ltd.](https://appshunter.io/developer/998279524) |

## What reviewers say

### AI老花镜

[App page](https://appshunter.io/ios/app/ai/id6541753289)

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

**In-app purchases:** none


### Thyroid Tracker

[App page](https://appshunter.io/ios/app/thyroid-tracker-hormone-log/id6753612177)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $5.99 | per year |
| Lifetime | $15.00 | one-time |


## Frequently asked questions

### Is AI老花镜 free?

AI老花镜 costs $0.99, with no in-app purchases.

### Is Thyroid Tracker free?

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

### Do AI老花镜 or Thyroid Tracker have ads?

Neither AI老花镜 nor Thyroid Tracker shows ads.

### Which is updated more often, AI老花镜 or Thyroid Tracker?

AI老花镜 ships an update weekly, and Thyroid Tracker every 4 days. Most recently, AI老花镜 was updated on October 5, 2026 and Thyroid Tracker on October 7, 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.*