iPhone Screenshots


OpenSignal is the ultimate signal toolkit that shows you how to get a better network connection instantly, find nearby free Wifi hotspots worldwide, view signal maps so that you can compare performance of networks in your area and test the speed of your mobile or Wifi connection.

Unlike other apps, which look for maximum possible speed through optimised testing, OpenSignal informs you about your true speed - what you are likely to experience when normally using your phone. Anyone using the app contributes data, informing others about real-world, not estimated, mobile performance (and we'll never ask you for personal information, just your signal strength stats).

With OpenSignal you can map cellular coverage, find Wi-Fi hotspots, test and improve your reception & get faster data.

- Signal compass points you in the direction your signal is coming from
- Speed test for download, upload and latency
- Map of cell towers and Wifi hotspots
- Coverage maps allow you see the best/worst places for 2G, 3G and 4G
- Free and ad-free

Based on our community-generated data we are able to help keep you better connected by giving you a practical solution to the problems of slow mobile internet. Simply follow our signal compass to walk towards better phone signal or see our in-app coverage maps to work out which carrier is best for where you are, useful if you're thinking about switching networks. Our wifi maps help you find local public-access wireless networks (Wifi hotspots).

Maps are not updated in real-time. Don’t worry though, we log the information you share with us to improve our coverage maps and performance information. We’re working hard to make sure the data you contribute to the project is available to everyone as quickly as possible.

- Not all towers and wireless hotspots are in our database - we’re working on it!
- Moving in the direction of your cell tower (the signal compass) will not always improve reception due to interference effects/local geography
- Continued use of GPS running in the background can dramatically decrease battery life.

If you read to here (!) you should really join the OpenSignal beta to help us improve the app, just email hi@opensignal.com if you're interested.

What's New

Version 4.0.12

Fix for the crash encountered by iPhone X users

Customer Reviews

2.7 out of 5

85 Ratings

85 Ratings

Bad tower data, MIA developer, wrong carrier


Great idea if it were accurate. As others have noted the data display for me shows T-Mobile, who is not my carrier. I’ve tried to contact the developer several times about incorrect tower location shown in my area. I get an automatic response and nothing else. I’m not sure where they get their data but there certainly not cell towers in the middle of the river!



Super biased app like someone is paying the developers to flaunt inaccurate data. They show T-Mobile as the best in pretty much all locations even in areas where I know for a fact that T-Mobile doesn't work like on Camp Pendleton, Ca no one really has T-Mobile because of the crappy service but everyone has ATT and we get service crystal clear in most places. Do not recommend this app

Speed test not consistent or accurate

Not fun a higher levels

I am a Tech Expert in cell service industry. Using several speed tests to find the true speed on any network. Open signal is 15-23 Mbps slower than other tests. This is not a reliable test. I tried it many times and tested other speed testing web sites and apps, this cannot be used for accurate testing.


OpenSignal Inc.
24.2 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Dutch, French, German, Indonesian, Italian, Portuguese, Spanish, Thai
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2017 OpenSignal, Inc


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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