# ONX Connect vs CellMaster

The clearest difference is rating: CellMaster at 5.0 against ONX Connect's 4.0. CellMaster also leads on update cadence (every 3 weeks vs every 4 months). ONX Connect's advantage is review sentiment (100% vs 58%) and in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. CellMaster sells 1 one-off in-app purchase. ONX Connect asks for nothing beyond the download.

CellMaster holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews complicate that: 100% of ONX Connect's written reviews are positive against 58% of CellMaster's, so the app with the better star average is not the one people write more warmly about.

ONX Connect ships an update every 4 months, CellMaster every 3 weeks. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ONX Connect | CellMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/onx-connect/id6745030857/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/cellmaster/id6749219558/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | **100.0% of reviews** | 58.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 213 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Opensignal Inc.](https://appshunter.io/developer/598298033) | [yoni gold](https://appshunter.io/developer/1829345218) |

## What reviewers say

### ONX Connect

[App page](https://appshunter.io/ios/app/onx-connect/id6745030857)

This tool anonymously collects network performance data for analysis by network operators. It helps in testing equipment and infrastructure to understand network quality.

**Highlights:** Anonymized data recording, Network performance transmission, Equipment testing, Infrastructure analysis, Network operator focus

**Features:** Vision Pro support

**In-app purchases:** none


### CellMaster

[App page](https://appshunter.io/ios/app/cellmaster/id6749219558)

Explore detailed cell tower information with interactive maps and carrier search. Save favorite towers and view dynamic frequency data, even offline. Understand your mobile network coverage with intuitive tools.

**Highlights:** Interactive cell tower maps, Carrier and frequency band search, Save and organize favorite towers, Dynamic frequency and antenna views, Offline data access

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is ONX Connect free?

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

### Is CellMaster free?

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

### Which has better reviews, ONX Connect or CellMaster?

CellMaster is rated higher. ONX Connect averages 4.0 out of 5 from 2 ratings, while CellMaster averages 5.0 from 4 ratings.

### Do ONX Connect or CellMaster have ads?

Neither ONX Connect nor CellMaster shows ads.

### Which is updated more often, ONX Connect or CellMaster?

ONX Connect ships an update every 4 months, and CellMaster every 3 weeks. Most recently, ONX Connect was updated on October 4, 2026 and CellMaster on October 14, 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.*