ONX Connect vs CellMaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ONX Connect
This tool anonymously collects network performance data for analysis by network operators. It helps in testing equipment and infrastructure to understand network quality.
- Anonymized data recording
- Network performance transmission
- Equipment testing
- Infrastructure analysis
- Network operator focus
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The Network Assessment Tool application is designed to record and transmit anonymized network performance data for analysis by Opensignal. The target audience for this application are network operators looking to test equipment and infrastructure.
CellMaster
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.
- Interactive cell tower maps
- Carrier and frequency band search
- Save and organize favorite towers
- Dynamic frequency and antenna views
- Offline data access
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Discover the power of detailed cell tower data at your fingertips. Whether you’re checking coverage, exploring networks, or diving into spectrum details, this app makes it simple and intuitive. Features • Interactive Maps – Explore towers with detailed overlays and smooth navigation. • Carrier Search – Quickly find sites by carrier or frequency band. • Favourites – Save and organize the towers you care about most. • Dynamic Frequency Views – Instantly toggle between frequencies and antenna details. And more!!
Screenshots
Verdict
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 5 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 5 months, CellMaster every 3 weeks. The most recent releases landed on September 17, 2026 and September 29, 2026 respectively.
| Parameter | ONX Connect | CellMaster |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 16 MB | 213 MB |
| Age rating | 4+ | 4+ |
| Developer | Opensignal Inc. | yoni gold |
Customer experience
ONX Connect
CellMaster
In-app purchases
ONX Connect
No in-app purchases
CellMaster
- Remove Ads$3.99
Questions
Is ONX Connect free?
Is CellMaster free?
Which has better reviews, ONX Connect or CellMaster?
Do ONX Connect or CellMaster have ads?
Which is updated more often, ONX Connect or CellMaster?
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