# DNS测速 vs InoFEMS

The clearest difference is in-app purchases: InoFEMS at none against DNS测速's 1. InoFEMS also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DNS测速 sells 1 one-off in-app purchase. InoFEMS asks for nothing beyond the download.

DNS测速 ships an update every 5 months, InoFEMS every 3 months. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | DNS测速 | InoFEMS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 128 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [兴龙 张](https://appshunter.io/developer/1576162823) | [苏州汇川技术有限公司](https://appshunter.io/developer/1441943965) |

## What reviewers say

### DNS测速

[App page](https://appshunter.io/ios/app/dns/id6470105015)

Optimize your network speed by testing and selecting the best DNS servers. This tool measures DNS latency and resolution times to help you reduce connection delays and improve your overall online experience.

**Highlights:** DNS latency testing, DNS resolution delay testing, TCP connectivity testing, Network optimization, DNS server selection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 测速会员 | $0.99 | one-time |


### InoFEMS

[App page](https://appshunter.io/ios/app/inofems/id6711331993)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DNS测速 free?

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

### Is InoFEMS free?

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

### Do DNS测速 or InoFEMS have ads?

Neither DNS测速 nor InoFEMS shows ads.

### Which is updated more often, DNS测速 or InoFEMS?

DNS测速 ships an update every 5 months, and InoFEMS every 3 months. Most recently, DNS测速 was updated on September 14, 2026 and InoFEMS on September 18, 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.*