# Longevity Master vs 秒懂育儿AI

The clearest difference is in-app purchases: 秒懂育儿AI at none against Longevity Master's 1. 秒懂育儿AI also leads on ads (none vs shown). Longevity Master's advantage is update cadence (every 9 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Longevity Master sells 1 one-off in-app purchase. 秒懂育儿AI asks for nothing beyond the download.

Longevity Master ships an update every 9 days, 秒懂育儿AI every 3 weeks. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Longevity Master | 秒懂育儿AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 21 MB | 23 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [山西深海科技有限公司](https://appshunter.io/developer/6791085339) |

## What reviewers say

### Longevity Master

[App page](https://appshunter.io/ios/app/longevity-master-habits/id6747810020)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $6.99 | one-time |


### 秒懂育儿AI

[App page](https://appshunter.io/ios/app/ai/id6795911737)

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

**In-app purchases:** none


## Frequently asked questions

### Is Longevity Master free?

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

### Is 秒懂育儿AI free?

秒懂育儿AI is free to download, with no in-app purchases.

### Do Longevity Master or 秒懂育儿AI have ads?

Longevity Master shows ads; 秒懂育儿AI does not.

### Which is updated more often, Longevity Master or 秒懂育儿AI?

Longevity Master ships an update every 9 days, and 秒懂育儿AI every 3 weeks. Most recently, Longevity Master was updated on October 5, 2026 and 秒懂育儿AI 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.*