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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

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 community to help us improve the app, just email hi@opensignal.com if you're interested.

What’s New

Version 4.5

Bug fixes.
Performance improvements.

Ratings and Reviews

2.5 out of 5
341 Ratings

341 Ratings

TactfulCactii ,

Missing crucial features…still

I’ve deleted this app several times, and every once in a while re-install it thinking maybe it “works” now. The main issue used to Beth’s missing “follow the arrow” arrow. Well, that’s still missing.

The reason for my most recent re-install is That I wanted to check signal strength on Verizon for a certain area on the map. Well, there’s a “Select Carrier” dropdown, but the only option is “All”. There’s no option for individual carriers anymore. An average of three completely separate carriers is 100% useless info. Guess I’m deleting…again.

VanSuHan ,

Great app but needs some tuning.

Been using this app for over a year now and it seems to really gives you the best average speed test rather than maximum speed. I have Ookla SpeedTest and I use it to compare the differences of its performance and Ookla (and other speed test app) does only give you what your cell signal/Wi-Fi maximum speed is and Open Signal gives you the real speed that you’re always averaging. This app would be perfect if the developer can make it for you to delete your old test records (you can but it comes back after resetting the app) and needs to add location to where you test your signal and Wi-Fi so you can keep track of where you had already test the signal. There seems to be a problem with the find cellular signal. I’m standing right next to my cellular sever (T-Mobile) and it’s pointing away from it?. Other then that this is a great speed test app. 3 stars for now.

PHWhite ,

Doesn’t actually identify cell towers

I downloaded this app primarily because I wanted to be able to identify the location of cell towers and the carriers that they belong to. I recently changed cell carriers after 20+ years with the same one and trying to learn where my new carrier has true coverage and where they don’t. The “Find Signal” feature shows all towers as being my carrier’s towers even when I KNOW that I am roaming on another carrier. Also the arrow that you’re supposed to follow to locate the tower is not based on actual tower locations, it’s based on crowd-sourcing information which is no more accurate than my own anecdotal knowledge of the area. The speed test and data usage features are helpful but they aren’t what I downloaded the app for.


OpenSignal Inc.
25.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


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  • Family Sharing

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

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