Comparison

Opensignal Speed Test Ad Free vs CellMapper

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Opensignal Speed Test Ad Free

Measure your mobile network performance with detailed speed tests for download, upload, and latency across 3G, 4G/LTE, 5G, and WiFi. Analyze video streaming quality and compare network coverage in your area to find the best provider.

Highlights
  • Download, upload, and latency speed tests
  • Video streaming quality analysis
  • Network coverage comparison
  • Signal strength and ping tests
  • Historical test logs
  • Connectivity maps
Features
Read full description

Opensignal is a fully-featured mobile connectivity and network signal speed test tool. Speed test, including download, upload and latency - for 3G, 4G/LTE, 5G and WiFi Find the best network provider in your area. Compare coverage on Sprint, T-Mobile, AT&T and Verizon. Video streaming test - check streaming experience for Netflix, YouTube and others Compare what you’re paying for to what you’re actually getting by measuring connection quality on an Apple map with a database of signal and speed test results Completely free and no adverts. Our mission is to create an open-source map of connectivity so that everyone in the world can enjoy the best mobile connection available Features - Test tab with speed test and video streaming quality to analyze mobile video performance with results for time spent buffering, loading and playback - Signal dashboard and ping test - for testing latency response - Connectivity map to show locations of 3G and 4G/LTE tests - Network stats with average speeds for download, upload and latency and network strength on major providers - Historical log of your WiFi and 3G, 4G/LTE and 5G speed tests to check connectivity over time Opensignal Speed Tests Opensignal speed tests measure your real experience of mobile connectivity and signal. The speed test runs a 10 sec download test, 10 sec upload test and ping test to determine the speed you will likely experience. The speed test runs on common internet CDN servers. The result is calculated with the middle range of samples. Check if you're getting the network quality you're paying for from your mobile network or internet provider. Use our coverage maps to compare networks and data speed in your area. Opensignal works with WiFi mobile broadband internet. Video Speed Tests Slow video load time? Video buffering? More time waiting than watching? A good average network speed isn’t enough for a great video experience. Opensignal’s video test gives you the full picture of your network experience. Opensignal video tests show you exactly what to expect with HD and SD videos. Watch a 15 sec video snippet to test and log load time, buffering, and playback issues in real-time. Monitor how video quality changes with time and location. Review video test results in History to see if your network experience has changed over time. Coverage Map Opensignal’s coverage maps show signal strength down to street level using speed test and signal data from local users. With network stats on local network operators, you can check speeds ahead of a trip, find out if you will get a signal in remote areas, check your signal against others in the area to see if you’re getting the best service, arrange the best local SIM and check the signal strength when travelling. Improving Network Connectivity We provide an independent source of truth in mobile network experience: A data source that shows how users experience mobile network speeds, gaming, video and voice services worldwide. To do this, we collect data on the signal strength, network, location and other device sensors. You can stop this at any time in the settings. We share this data with network operators globally and others in the industry to drive better connectivity for all. Do Not Sell My Info: https://www.opensignal.com/ccpa

About

CellMapper

Visualize global cellular network coverage for 2G, 3G, 4G, and 5G technologies. This app uses crowdsourced data to display detailed network information from carriers worldwide.

Highlights
  • Global cellular network coverage maps
  • 2G/3G/4G/5G (NSA & SA) data
  • Crowdsourced information
  • Carrier network details
  • Advanced cellular metrics
Features
Read full description

CellMapper displays advanced 2G/3G/4G/5G (NSA and SA) cellular network information from carriers all around the world with its crowdsourced coverage maps.

Screenshots

Opensignal Speed Test Ad Free4 screens
CellMapper3 screens

Verdict

The call

The clearest difference is review sentiment: CellMapper at 100% against Opensignal Speed Test Ad Free's 38%. CellMapper also leads on rating (5.0 vs 4.5) and update cadence (weekly vs every 3 weeks). Opensignal Speed Test Ad Free's advantage is ratings volume (18K vs 6) and iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CellMapper holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Opensignal Speed Test Ad Free has 18K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 38% of Opensignal Speed Test Ad Free's written reviews are positive against 100% of CellMapper's.

UpkeepUpdate frequency

Opensignal Speed Test Ad Free ships an update every 3 weeks, CellMapper weekly. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Opensignal Speed Test Ad Free versus CellMapper: the parameters behind the verdict, then further details
ParameterOpensignal Speed Test Ad FreeCellMapper
PriceFreeFree
Rating4.5 (18K ratings)5.0 (6 ratings) — better
Positive reviews37.8% of reviews100.0% of reviews — better
Number of ratings18K — better6
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size17 MB2 MB
Age rating4+4+
DeveloperOpensignal Inc.CellMapper Services Limited

Customer experience

Opensignal Speed Test Ad Free

All ratings17,799 ratings
Positive88.5%
Neutral4.8%
Negative6.7%
Written reviews940 reviews
Positive37.8%
Neutral11.0%
Negative51.3%

CellMapper

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Opensignal Speed Test Ad Free

Reported bugs

20 issues
  • History is all screwed up, dates don't make sense
  • Open signal tower loc not working
  • Tower location option not working
  • Directional Arrow not working
  • Can no longer point towers
Show 15 more
  • No cell tower located
  • Broken in latest release, no tower data
  • Still can't find cell tower, even in city
  • Celltower location does not work for iPhone devices
  • No cell tower info
  • Compass Directional Arrow not working
  • Odd results with tower location
  • Tower locator doesn't work
  • Shows 5G as 4G
  • Doesn't monitor drops
  • Strange issue with no towers showing
  • Doesn't actually identify cell towers
  • Upload test consistently fails
  • Crashes
  • Refreshing carriers not working

Requested features

9 requests
  • Reset Stats
  • Tower location option
  • Dark mode option
  • Advanced analytics dashboard
  • Cell tower compass
Show 4 more
  • Distance to tower
  • Ability to test 1080p and 4K video
  • Show all nearby towers on map
  • Ability to change carrier filter

CellMapper

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Opensignal Speed Test Ad Free

No in-app purchases

None

CellMapper

No in-app purchases

Questions

Is Opensignal Speed Test Ad Free free?
Opensignal Speed Test Ad Free is free to download, with no in-app purchases.
Is CellMapper free?
CellMapper is free to download, with no in-app purchases.
Which has better reviews, Opensignal Speed Test Ad Free or CellMapper?
CellMapper is rated higher. Opensignal Speed Test Ad Free averages 4.5 out of 5 from 18K ratings, while CellMapper averages 5.0 from 6 ratings.
Do Opensignal Speed Test Ad Free or CellMapper have ads?
Neither Opensignal Speed Test Ad Free nor CellMapper shows ads.
Which is updated more often, Opensignal Speed Test Ad Free or CellMapper?
Opensignal Speed Test Ad Free ships an update every 3 weeks, and CellMapper weekly. Most recently, Opensignal Speed Test Ad Free was updated on September 24, 2026 and CellMapper on September 18, 2026.

Other comparisons