SigLens: US Cell Tower Map

US Cell Tower Signal Map

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

See the nearest cell towers around you on an offline US map — no ads, no account, no subscription. SigLens is a focused utility for locating cellular towers and understanding carrier coverage across the United States. Whether you are a traveler, a remote worker, or a tech enthusiast, SigLens helps you visualize the cellular infrastructure around you. Using the OpenCelliD database, SigLens provides a clear, map-based view of cell towers from major US carriers. Instead of guessing where your signal is coming from, you can see the physical locations of the towers that power your connection. Key Features: - US Tower Map: A clean, interactive map showing cell tower locations across the United States. - Carrier Filtering: Filter towers by carrier (MCC/MNC) to see the infrastructure relevant to your service. - Tower Details: Tap any tower to see its unique identifier (Cell ID), radio type (LTE, GSM, UMTS), and approximate location. - Offline Search: Search for towers in specific areas even when your connection is limited. - Privacy First: Your location is used only to center the map and find nearby towers. No data is collected or shared. Honest Framing: SigLens is a tower locator and map utility, not a live signal meter or speed test tool. It does not display real-time signal strength (dBm), RSSI, or "bars" from your device's hardware, as iOS restricts access to this data. It does not perform network speed tests or crowdsource signal data. Tower data is provided by OpenCelliD and is subject to their database coverage and accuracy. Data Attribution: This app uses data from OpenCelliD, which is made available under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0). One-time purchase. No subscriptions. No ads.

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What's New in 1.1 • The free map now highlights the 3 nearest tower records around you, and tells you exactly how many more are within range. • Unlock Full Tower Map with the one-time Lifetime purchase to see every tower record the offline US database has for your area. • Purchases and restores now refresh the map immediately — no relaunch needed. As always: a tower locator and map utility, not a live signal meter. One-time purchase. No subscriptions. No ads.

Version 1.1

The developer, Zcode, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Shenzhen Liubai Software Co., Ltd
Size
  • 1.6 MB
Category
  • Navigation
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 zcode
  • Developer Website
  • Privacy Policy

    • More by Zcode

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