# ASK4 Diagnostics vs Circuit 41

The clearest difference is update cadence: Circuit 41 at every 3 weeks against ASK4 Diagnostics's every 3 months. Circuit 41 also leads on iOS requirement (15.1 vs 17.0). On price, ads, 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.

ASK4 Diagnostics ships an update every 3 months, Circuit 41 every 3 weeks. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ASK4 Diagnostics | Circuit 41 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 53 MB | 52 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ASK4 Ltd](https://appshunter.io/developer/1123016758) | [Circuit 40s](https://appshunter.io/developer/1895054215) |

## What reviewers say

### ASK4 Diagnostics

[App page](https://appshunter.io/ios/app/ask4-diagnostics/id1455988601)

This utility app performs various network tests and diagnostics. It's designed to help support agents quickly identify and resolve internet connectivity issues. Share the collected data with a support representative to expedite problem-solving.

**Highlights:** Runs network tests, Performs diagnostics, Shares test results, Aids support agents, Troubleshoots internet issues

**Features:** Vision Pro support

**In-app purchases:** none


### Circuit 41

[App page](https://appshunter.io/ios/app/circuit-41/id6762875315)

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

**In-app purchases:** none


## Frequently asked questions

### Is ASK4 Diagnostics free?

ASK4 Diagnostics is free to download, with no in-app purchases.

### Is Circuit 41 free?

Circuit 41 is free to download, with no in-app purchases.

### Do ASK4 Diagnostics or Circuit 41 have ads?

Neither ASK4 Diagnostics nor Circuit 41 shows ads.

### Which is updated more often, ASK4 Diagnostics or Circuit 41?

ASK4 Diagnostics ships an update every 3 months, and Circuit 41 every 3 weeks. Most recently, ASK4 Diagnostics was updated on October 8, 2026 and Circuit 41 on October 10, 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.*