# NSguard vs 海拔仪

The clearest difference is ads: NSguard at none against 海拔仪's shown. NSguard also leads on update cadence (weekly vs monthly). 海拔仪's advantage is iOS requirement (15 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NSguard ships an update weekly, 海拔仪 monthly. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | NSguard | 海拔仪 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Monthly |
| Size | 3 MB | 16 MB |
| Requires iOS | 26.0 | **15** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [增阳 赵](https://appshunter.io/developer/1895564529) | [媛媛 钱](https://appshunter.io/developer/1869024065) |

## What reviewers say

### NSguard

[App page](https://appshunter.io/ios/app/nsguard/id6779931459)

**In-app purchases:** none


### 海拔仪

[App page](https://appshunter.io/ios/app/id6782098514)

**In-app purchases:** none


## Frequently asked questions

### Is NSguard free?

NSguard is free to download, with no in-app purchases.

### Is 海拔仪 free?

海拔仪 is free to download, with no in-app purchases.

### Do NSguard or 海拔仪 have ads?

海拔仪 shows ads; NSguard does not.

### Which is updated more often, NSguard or 海拔仪?

NSguard ships an update weekly, and 海拔仪 monthly. Most recently, NSguard was updated on October 25, 2026 and 海拔仪 on October 15, 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.*