# Stop Calling vs CTU

The clearest difference is rating: Stop Calling at 4.7 against CTU's 3.0. Stop Calling also leads on review sentiment (38% vs 0%) and update cadence (every 6 days vs every 40 months). CTU's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stop Calling sells 2 in-app purchases, starting at $0.99 per month. CTU asks for nothing beyond the download.

Stop Calling holds the better App Store score, 4.7 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 38% of Stop Calling's written reviews are positive against 0% of CTU's.

Stop Calling ships an update every 6 days, CTU every 40 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Stop Calling | CTU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/stop-calling/id1223417298/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/ctu-nettest/id6449427820/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **38.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 40 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 16 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Miroslav Baudys](https://appshunter.io/developer/1065339489) | [Český telekomunikační úřad](https://appshunter.io/developer/1689012708) |

## What reviewers say

### Stop Calling

[App page](https://appshunter.io/ios/app/stop-calling/id1223417298)

Identify unknown callers and protect yourself from fraudulent or annoying calls. See descriptions of incoming calls, such as "Financial Services" or "Telemarketing," directly on your screen. The database of suspicious numbers is constantly updated.

**Highlights:** Caller identification, Spam call blocking, Real-time call descriptions, Updated database of suspicious numbers, Protection from fraudulent calls

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee every month | $0.99 | per month |
| Buy me a coffee | $1.99 | one-time |


### CTU

[App page](https://appshunter.io/ios/app/ctu-nettest/id6449427820)

Measure your mobile internet connection's upload and download speed, and ping. This app displays your current connection type and IP address, offering basic and loop measurement modes. Results are saved and accessible on the CTU website.

**Highlights:** Measure upload/download speed, Measure ping, Display connection type, Display IP address, Basic measurement mode, Loop measurement mode, Save and view results online

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

**In-app purchases:** none


## Frequently asked questions

### Is Stop Calling free?

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

### Is CTU free?

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

### Which has better reviews, Stop Calling or CTU?

Stop Calling is rated higher. Stop Calling averages 4.7 out of 5 from 3 ratings, while CTU averages 3.0 from 1 ratings.

### Do Stop Calling or CTU have ads?

Neither Stop Calling nor CTU shows ads.

### Which is updated more often, Stop Calling or CTU?

Stop Calling ships an update every 6 days, and CTU every 40 months. Most recently, Stop Calling was updated on November 2, 2026 and CTU on November 3, 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.*