# Network Diagnostics Speed Test vs FST

The clearest difference is update cadence: FST at every 2 days against Network Diagnostics Speed Test's every 3 weeks. Network Diagnostics Speed Test's advantage is iOS requirement (17 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Network Diagnostics Speed Test sells 1 one-off in-app purchase and FST sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Network Diagnostics Speed Test ships an update every 3 weeks, FST every 2 days. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Network Diagnostics Speed Test | FST |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 6 MB | 76 MB |
| Requires iOS | **17** | 26.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [友健 高](https://appshunter.io/developer/1871964438) | [振涛 顾](https://appshunter.io/developer/6792956650) |

## What reviewers say

### Network Diagnostics Speed Test

[App page](https://appshunter.io/ios/app/network-diagnostics-speed-test/id6792311015)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 升级高级会员 | $0.99 | one-time |


### FST

[App page](https://appshunter.io/ios/app/fst/id6794282851)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FST 月度计划 | $0.99 | per month |
| FST 年度计划 | $6.99 | per year |


## Frequently asked questions

### Is Network Diagnostics Speed Test free?

Network Diagnostics Speed Test is free to download, with in-app purchases available.

### Is FST free?

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

### Do Network Diagnostics Speed Test or FST have ads?

Neither Network Diagnostics Speed Test nor FST shows ads.

### Which is updated more often, Network Diagnostics Speed Test or FST?

Network Diagnostics Speed Test ships an update every 3 weeks, and FST every 2 days. Most recently, Network Diagnostics Speed Test was updated on September 9, 2026 and FST on September 20, 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.*