# i甲专线 vs ThyroVault

The clearest difference is iOS requirement: i甲专线 at 11.0 against ThyroVault's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. i甲专线 sells 5 one-off in-app purchases and ThyroVault sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

i甲专线 ships an update every 3 weeks, ThyroVault monthly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | i甲专线 | ThyroVault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 205 MB | 35 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Aijia Zhuanxian Health Management Co.Ltd](https://appshunter.io/developer/1822498682) | [Speed AI Labs](https://appshunter.io/developer/1895049591) |

## What reviewers say

### i甲专线

[App page](https://appshunter.io/ios/app/i/id1485684120)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 结节服务包 | $0.99 | one-time |
| 爱甲福 | $46.99 | one-time |
| 重医附一随访群课程 | $46.99 | one-time |
| 甲状腺术后正念疗愈 | $59.99 | one-time |
| 爱甲康 | $109.99 | one-time |


### ThyroVault

[App page](https://appshunter.io/ios/app/thyrovault-thyroid-and-migraine/id6771640127)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thyroid Tracker | $3.99 | per 7 days |
| Thyroid Tracker | $19.99 | per year |
| Thyroid Tracker | $29.99 | one-time |


## Frequently asked questions

### Is i甲专线 free?

i甲专线 is free to download, with in-app purchases available.

### Is ThyroVault free?

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

### Do i甲专线 or ThyroVault have ads?

Neither i甲专线 nor ThyroVault shows ads.

### Which is updated more often, i甲专线 or ThyroVault?

i甲专线 ships an update every 3 weeks, and ThyroVault monthly. Most recently, i甲专线 was updated on October 29, 2026 and ThyroVault 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.*